./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label33.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/Problem17_label33.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 f1d6c7224567b6057eecb8e0076a48aebc20a409238cb7be9c0543149a96c59f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:53:09,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:53:09,266 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:53:09,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:53:09,270 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:53:09,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:53:09,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:53:09,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:53:09,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:53:09,313 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:53:09,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:53:09,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:53:09,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:53:09,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:53:09,315 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:53:09,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:53:09,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:53:09,316 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:53:09,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:53:09,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:53:09,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:53:09,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:53:09,318 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:53:09,318 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:53:09,319 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:53:09,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:53:09,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:53:09,319 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:53:09,320 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:53:09,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:53:09,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:53:09,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:53:09,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:53:09,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:53:09,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:53:09,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:53:09,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:53:09,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:53:09,322 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:53:09,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:53:09,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:53:09,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:53:09,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1d6c7224567b6057eecb8e0076a48aebc20a409238cb7be9c0543149a96c59f [2024-11-09 19:53:09,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:53:09,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:53:09,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:53:09,628 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:53:09,628 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:53:09,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label33.c [2024-11-09 19:53:11,027 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:53:11,406 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:53:11,410 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label33.c [2024-11-09 19:53:11,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80cc4f5ae/b0c7ac3bc6874e978471af9c495d38f2/FLAG269cc3acb [2024-11-09 19:53:11,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80cc4f5ae/b0c7ac3bc6874e978471af9c495d38f2 [2024-11-09 19:53:11,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:53:11,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:53:11,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:53:11,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:53:11,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:53:11,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:53:11" (1/1) ... [2024-11-09 19:53:11,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53729f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:11, skipping insertion in model container [2024-11-09 19:53:11,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:53:11" (1/1) ... [2024-11-09 19:53:11,578 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:53:11,806 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/Problem17_label33.c[2518,2531] [2024-11-09 19:53:12,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:53:12,384 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:53:12,401 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/Problem17_label33.c[2518,2531] [2024-11-09 19:53:12,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:53:12,642 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:53:12,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12 WrapperNode [2024-11-09 19:53:12,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:53:12,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:53:12,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:53:12,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:53:12,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:12,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:12,986 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:53:12,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:53:12,987 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:53:12,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:53:12,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:53:12,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:12,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:13,033 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:13,246 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 19:53:13,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:13,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:13,378 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:13,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:13,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:13,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:13,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:53:13,454 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:53:13,454 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:53:13,454 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:53:13,455 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (1/1) ... [2024-11-09 19:53:13,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:53:13,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:53:13,491 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 19:53:13,494 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 19:53:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:53:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:53:13,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:53:13,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:53:13,660 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:53:13,662 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:53:17,787 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:53:18,003 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:53:18,005 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:53:18,035 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:53:18,039 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:53:18,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:53:18 BoogieIcfgContainer [2024-11-09 19:53:18,039 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:53:18,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:53:18,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:53:18,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:53:18,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:53:11" (1/3) ... [2024-11-09 19:53:18,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d64b553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:53:18, skipping insertion in model container [2024-11-09 19:53:18,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:53:12" (2/3) ... [2024-11-09 19:53:18,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d64b553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:53:18, skipping insertion in model container [2024-11-09 19:53:18,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:53:18" (3/3) ... [2024-11-09 19:53:18,047 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label33.c [2024-11-09 19:53:18,063 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:53:18,063 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:53:18,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:53:18,153 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;@440fbe2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:53:18,154 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:53:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states 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 19:53:18,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 19:53:18,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:18,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:18,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:18,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:18,172 INFO L85 PathProgramCache]: Analyzing trace with hash 913513737, now seen corresponding path program 1 times [2024-11-09 19:53:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:18,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306758703] [2024-11-09 19:53:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:18,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:18,451 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 19:53:18,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:18,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306758703] [2024-11-09 19:53:18,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306758703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:18,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:18,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:53:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198123916] [2024-11-09 19:53:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:18,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:18,486 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 19:53:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:21,379 INFO L93 Difference]: Finished difference Result 1648 states and 4104 transitions. [2024-11-09 19:53:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:21,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2024-11-09 19:53:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:21,404 INFO L225 Difference]: With dead ends: 1648 [2024-11-09 19:53:21,404 INFO L226 Difference]: Without dead ends: 978 [2024-11-09 19:53:21,413 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 19:53:21,416 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 832 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:21,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 556 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:53:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-09 19:53:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-09 19:53:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.2412731006160165) internal successors, (2183), 974 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states 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 19:53:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2183 transitions. [2024-11-09 19:53:21,512 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2183 transitions. Word has length 18 [2024-11-09 19:53:21,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:21,512 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 2183 transitions. [2024-11-09 19:53:21,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 19:53:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2183 transitions. [2024-11-09 19:53:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-09 19:53:21,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:21,515 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:21,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:53:21,516 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:21,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash 973080349, now seen corresponding path program 1 times [2024-11-09 19:53:21,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:21,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952277324] [2024-11-09 19:53:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:21,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:21,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952277324] [2024-11-09 19:53:21,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952277324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:21,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:21,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25662544] [2024-11-09 19:53:21,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:21,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:53:21,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:53:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:53:21,949 INFO L87 Difference]: Start difference. First operand 975 states and 2183 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:53:26,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:26,485 INFO L93 Difference]: Finished difference Result 3745 states and 8528 transitions. [2024-11-09 19:53:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:53:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-11-09 19:53:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:26,501 INFO L225 Difference]: With dead ends: 3745 [2024-11-09 19:53:26,501 INFO L226 Difference]: Without dead ends: 2772 [2024-11-09 19:53:26,504 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 19:53:26,505 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 1660 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 3979 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 4764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 3979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:26,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 276 Invalid, 4764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 3979 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 19:53:26,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2024-11-09 19:53:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2731. [2024-11-09 19:53:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2731 states, 2730 states have (on average 2.18021978021978) internal successors, (5952), 2730 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states 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 19:53:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 5952 transitions. [2024-11-09 19:53:26,565 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 5952 transitions. Word has length 89 [2024-11-09 19:53:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:26,567 INFO L471 AbstractCegarLoop]: Abstraction has 2731 states and 5952 transitions. [2024-11-09 19:53:26,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 19:53:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 5952 transitions. [2024-11-09 19:53:26,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 19:53:26,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:26,577 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:26,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:53:26,577 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:26,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1580821357, now seen corresponding path program 1 times [2024-11-09 19:53:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072718087] [2024-11-09 19:53:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:26,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:26,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:26,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072718087] [2024-11-09 19:53:26,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072718087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:26,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:26,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:53:26,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301683625] [2024-11-09 19:53:26,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:26,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:26,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:26,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:26,864 INFO L87 Difference]: Start difference. First operand 2731 states and 5952 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 19:53:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:29,341 INFO L93 Difference]: Finished difference Result 6341 states and 13862 transitions. [2024-11-09 19:53:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:29,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-11-09 19:53:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:29,359 INFO L225 Difference]: With dead ends: 6341 [2024-11-09 19:53:29,360 INFO L226 Difference]: Without dead ends: 3612 [2024-11-09 19:53:29,365 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 19:53:29,367 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 710 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:29,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 541 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 19:53:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2024-11-09 19:53:29,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 3592. [2024-11-09 19:53:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3591 states have (on average 2.157059314954052) internal successors, (7746), 3591 states have internal predecessors, (7746), 0 states have call successors, (0), 0 states 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 19:53:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 7746 transitions. [2024-11-09 19:53:29,477 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 7746 transitions. Word has length 124 [2024-11-09 19:53:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:29,478 INFO L471 AbstractCegarLoop]: Abstraction has 3592 states and 7746 transitions. [2024-11-09 19:53:29,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 19:53:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 7746 transitions. [2024-11-09 19:53:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-09 19:53:29,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:29,486 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:29,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:53:29,487 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:29,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1918800767, now seen corresponding path program 1 times [2024-11-09 19:53:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:29,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074503266] [2024-11-09 19:53:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:29,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:29,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074503266] [2024-11-09 19:53:29,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074503266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:29,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:29,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:29,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529650398] [2024-11-09 19:53:29,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:29,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:53:29,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:53:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:53:29,970 INFO L87 Difference]: Start difference. First operand 3592 states and 7746 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 19:53:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:32,826 INFO L93 Difference]: Finished difference Result 6747 states and 14516 transitions. [2024-11-09 19:53:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:53:32,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-11-09 19:53:32,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:32,839 INFO L225 Difference]: With dead ends: 6747 [2024-11-09 19:53:32,839 INFO L226 Difference]: Without dead ends: 3157 [2024-11-09 19:53:32,843 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 19:53:32,844 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 888 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:32,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 861 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:53:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2024-11-09 19:53:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3157. [2024-11-09 19:53:32,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 3156 states have (on average 2.1362484157160964) internal successors, (6742), 3156 states have internal predecessors, (6742), 0 states have call successors, (0), 0 states 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 19:53:32,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 6742 transitions. [2024-11-09 19:53:32,899 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 6742 transitions. Word has length 130 [2024-11-09 19:53:32,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:32,899 INFO L471 AbstractCegarLoop]: Abstraction has 3157 states and 6742 transitions. [2024-11-09 19:53:32,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 19:53:32,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 6742 transitions. [2024-11-09 19:53:32,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-09 19:53:32,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:32,902 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:32,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:53:32,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:32,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:32,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1758673900, now seen corresponding path program 1 times [2024-11-09 19:53:32,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:32,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770221539] [2024-11-09 19:53:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:32,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:53:33,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:33,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770221539] [2024-11-09 19:53:33,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770221539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:33,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:33,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:53:33,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454322436] [2024-11-09 19:53:33,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:33,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:33,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:33,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:33,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:33,072 INFO L87 Difference]: Start difference. First operand 3157 states and 6742 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:53:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:35,268 INFO L93 Difference]: Finished difference Result 8455 states and 18412 transitions. [2024-11-09 19:53:35,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:35,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 161 [2024-11-09 19:53:35,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:35,286 INFO L225 Difference]: With dead ends: 8455 [2024-11-09 19:53:35,287 INFO L226 Difference]: Without dead ends: 4865 [2024-11-09 19:53:35,291 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 19:53:35,292 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:35,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 591 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:53:35,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2024-11-09 19:53:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4011. [2024-11-09 19:53:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4011 states, 4010 states have (on average 2.0306733167082296) internal successors, (8143), 4010 states have internal predecessors, (8143), 0 states have call successors, (0), 0 states 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 19:53:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 8143 transitions. [2024-11-09 19:53:35,358 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 8143 transitions. Word has length 161 [2024-11-09 19:53:35,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:35,359 INFO L471 AbstractCegarLoop]: Abstraction has 4011 states and 8143 transitions. [2024-11-09 19:53:35,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 19:53:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 8143 transitions. [2024-11-09 19:53:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-09 19:53:35,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:35,362 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:35,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:53:35,362 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:35,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:35,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1742860913, now seen corresponding path program 1 times [2024-11-09 19:53:35,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:35,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639333406] [2024-11-09 19:53:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:35,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:53:35,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:35,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639333406] [2024-11-09 19:53:35,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639333406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:35,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:35,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:35,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079103440] [2024-11-09 19:53:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:35,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:35,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:35,487 INFO L87 Difference]: Start difference. First operand 4011 states and 8143 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 19:53:37,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:37,833 INFO L93 Difference]: Finished difference Result 10150 states and 20888 transitions. [2024-11-09 19:53:37,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:37,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 174 [2024-11-09 19:53:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:37,864 INFO L225 Difference]: With dead ends: 10150 [2024-11-09 19:53:37,864 INFO L226 Difference]: Without dead ends: 6141 [2024-11-09 19:53:37,868 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 19:53:37,869 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 802 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:37,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 482 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:53:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2024-11-09 19:53:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 3988. [2024-11-09 19:53:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3987 states have (on average 2.033609229997492) internal successors, (8108), 3987 states have internal predecessors, (8108), 0 states have call successors, (0), 0 states 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 19:53:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 8108 transitions. [2024-11-09 19:53:37,949 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 8108 transitions. Word has length 174 [2024-11-09 19:53:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:37,949 INFO L471 AbstractCegarLoop]: Abstraction has 3988 states and 8108 transitions. [2024-11-09 19:53:37,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 19:53:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 8108 transitions. [2024-11-09 19:53:37,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-09 19:53:37,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:37,952 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:37,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:53:37,952 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:37,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:37,952 INFO L85 PathProgramCache]: Analyzing trace with hash -995723320, now seen corresponding path program 1 times [2024-11-09 19:53:37,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:37,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969570712] [2024-11-09 19:53:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:37,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:53:38,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:38,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969570712] [2024-11-09 19:53:38,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969570712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:38,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:38,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 19:53:38,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174962344] [2024-11-09 19:53:38,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:38,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 19:53:38,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 19:53:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:53:38,246 INFO L87 Difference]: Start difference. First operand 3988 states and 8108 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 19:53:40,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:40,956 INFO L93 Difference]: Finished difference Result 10551 states and 21771 transitions. [2024-11-09 19:53:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:53:40,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2024-11-09 19:53:40,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:40,969 INFO L225 Difference]: With dead ends: 10551 [2024-11-09 19:53:40,970 INFO L226 Difference]: Without dead ends: 6565 [2024-11-09 19:53:40,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:53:40,975 INFO L432 NwaCegarLoop]: 1099 mSDtfsCounter, 1869 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:40,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 1189 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 19:53:40,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6565 states. [2024-11-09 19:53:41,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6565 to 6551. [2024-11-09 19:53:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6551 states, 6550 states have (on average 2.0251908396946563) internal successors, (13265), 6550 states have internal predecessors, (13265), 0 states have call successors, (0), 0 states 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 19:53:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6551 states to 6551 states and 13265 transitions. [2024-11-09 19:53:41,074 INFO L78 Accepts]: Start accepts. Automaton has 6551 states and 13265 transitions. Word has length 181 [2024-11-09 19:53:41,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:41,074 INFO L471 AbstractCegarLoop]: Abstraction has 6551 states and 13265 transitions. [2024-11-09 19:53:41,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 19:53:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 6551 states and 13265 transitions. [2024-11-09 19:53:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-09 19:53:41,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:41,078 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:41,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:53:41,078 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:41,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:41,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1213657931, now seen corresponding path program 1 times [2024-11-09 19:53:41,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:41,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952023049] [2024-11-09 19:53:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:41,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 170 proven. 71 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 19:53:41,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:41,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952023049] [2024-11-09 19:53:41,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952023049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:53:41,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147385524] [2024-11-09 19:53:41,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:41,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:53:41,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:53:41,399 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 19:53:41,401 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 19:53:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:41,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:53:41,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:53:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 170 proven. 71 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 19:53:41,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:53:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 19:53:42,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147385524] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:53:42,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:53:42,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:53:42,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558555532] [2024-11-09 19:53:42,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:42,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:53:42,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:53:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:53:42,066 INFO L87 Difference]: Start difference. First operand 6551 states and 13265 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 19:53:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:45,685 INFO L93 Difference]: Finished difference Result 21234 states and 43454 transitions. [2024-11-09 19:53:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:53:45,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2024-11-09 19:53:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:45,717 INFO L225 Difference]: With dead ends: 21234 [2024-11-09 19:53:45,718 INFO L226 Difference]: Without dead ends: 14252 [2024-11-09 19:53:45,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:53:45,729 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 1606 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 3698 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 4432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 3698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:45,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 168 Invalid, 4432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 3698 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:53:45,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14252 states. [2024-11-09 19:53:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14252 to 14250. [2024-11-09 19:53:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14250 states, 14249 states have (on average 2.0261070952347535) internal successors, (28870), 14249 states have internal predecessors, (28870), 0 states have call successors, (0), 0 states 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 19:53:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14250 states to 14250 states and 28870 transitions. [2024-11-09 19:53:45,997 INFO L78 Accepts]: Start accepts. Automaton has 14250 states and 28870 transitions. Word has length 245 [2024-11-09 19:53:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:45,997 INFO L471 AbstractCegarLoop]: Abstraction has 14250 states and 28870 transitions. [2024-11-09 19:53:45,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 19:53:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 14250 states and 28870 transitions. [2024-11-09 19:53:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-09 19:53:46,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:46,001 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:53:46,020 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 19:53:46,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:53:46,206 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:46,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:46,206 INFO L85 PathProgramCache]: Analyzing trace with hash 96282741, now seen corresponding path program 1 times [2024-11-09 19:53:46,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:46,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145546363] [2024-11-09 19:53:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:46,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:53:46,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:46,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145546363] [2024-11-09 19:53:46,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145546363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:46,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:46,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472277300] [2024-11-09 19:53:46,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:46,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:46,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:46,419 INFO L87 Difference]: Start difference. First operand 14250 states and 28870 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 19:53:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:48,640 INFO L93 Difference]: Finished difference Result 31060 states and 62976 transitions. [2024-11-09 19:53:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:48,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 258 [2024-11-09 19:53:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:48,670 INFO L225 Difference]: With dead ends: 31060 [2024-11-09 19:53:48,670 INFO L226 Difference]: Without dead ends: 16386 [2024-11-09 19:53:48,685 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 19:53:48,791 INFO L432 NwaCegarLoop]: 1220 mSDtfsCounter, 784 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:48,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1296 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:53:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16386 states. [2024-11-09 19:53:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16386 to 16384. [2024-11-09 19:53:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16384 states, 16383 states have (on average 2.009338948910456) internal successors, (32919), 16383 states have internal predecessors, (32919), 0 states have call successors, (0), 0 states 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 19:53:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16384 states to 16384 states and 32919 transitions. [2024-11-09 19:53:48,993 INFO L78 Accepts]: Start accepts. Automaton has 16384 states and 32919 transitions. Word has length 258 [2024-11-09 19:53:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:48,994 INFO L471 AbstractCegarLoop]: Abstraction has 16384 states and 32919 transitions. [2024-11-09 19:53:48,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 19:53:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 16384 states and 32919 transitions. [2024-11-09 19:53:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-09 19:53:48,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:48,998 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:48,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:53:48,998 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:48,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash 511571675, now seen corresponding path program 1 times [2024-11-09 19:53:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:49,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718509970] [2024-11-09 19:53:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:49,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 19:53:49,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:49,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718509970] [2024-11-09 19:53:49,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718509970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:49,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:49,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:49,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827918902] [2024-11-09 19:53:49,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:49,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:49,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:49,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:49,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:49,172 INFO L87 Difference]: Start difference. First operand 16384 states and 32919 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 19:53:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:51,399 INFO L93 Difference]: Finished difference Result 36176 states and 72873 transitions. [2024-11-09 19:53:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:51,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 258 [2024-11-09 19:53:51,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:51,436 INFO L225 Difference]: With dead ends: 36176 [2024-11-09 19:53:51,436 INFO L226 Difference]: Without dead ends: 19367 [2024-11-09 19:53:51,452 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 19:53:51,453 INFO L432 NwaCegarLoop]: 1190 mSDtfsCounter, 730 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:51,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1263 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:53:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19367 states. [2024-11-09 19:53:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19367 to 19367. [2024-11-09 19:53:51,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19367 states, 19366 states have (on average 1.985954766084891) internal successors, (38460), 19366 states have internal predecessors, (38460), 0 states have call successors, (0), 0 states 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 19:53:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19367 states to 19367 states and 38460 transitions. [2024-11-09 19:53:51,747 INFO L78 Accepts]: Start accepts. Automaton has 19367 states and 38460 transitions. Word has length 258 [2024-11-09 19:53:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:51,748 INFO L471 AbstractCegarLoop]: Abstraction has 19367 states and 38460 transitions. [2024-11-09 19:53:51,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 19:53:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 19367 states and 38460 transitions. [2024-11-09 19:53:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-09 19:53:51,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:51,754 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:51,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:53:51,755 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:51,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1344568405, now seen corresponding path program 1 times [2024-11-09 19:53:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:51,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011338738] [2024-11-09 19:53:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:51,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-09 19:53:51,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:51,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011338738] [2024-11-09 19:53:51,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011338738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:51,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:51,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:51,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548373883] [2024-11-09 19:53:51,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:51,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:51,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:51,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:51,928 INFO L87 Difference]: Start difference. First operand 19367 states and 38460 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 19:53:54,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:54,078 INFO L93 Difference]: Finished difference Result 50666 states and 100389 transitions. [2024-11-09 19:53:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:54,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 293 [2024-11-09 19:53:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:54,127 INFO L225 Difference]: With dead ends: 50666 [2024-11-09 19:53:54,128 INFO L226 Difference]: Without dead ends: 30867 [2024-11-09 19:53:54,145 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 19:53:54,146 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 811 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:54,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 424 Invalid, 2210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:53:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30867 states. [2024-11-09 19:53:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30867 to 28306. [2024-11-09 19:53:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28306 states, 28305 states have (on average 1.963751987281399) internal successors, (55584), 28305 states have internal predecessors, (55584), 0 states have call successors, (0), 0 states 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 19:53:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28306 states to 28306 states and 55584 transitions. [2024-11-09 19:53:54,495 INFO L78 Accepts]: Start accepts. Automaton has 28306 states and 55584 transitions. Word has length 293 [2024-11-09 19:53:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:54,495 INFO L471 AbstractCegarLoop]: Abstraction has 28306 states and 55584 transitions. [2024-11-09 19:53:54,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 19:53:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 28306 states and 55584 transitions. [2024-11-09 19:53:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-09 19:53:54,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:54,502 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-09 19:53:54,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:53:54,503 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:54,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1708878314, now seen corresponding path program 1 times [2024-11-09 19:53:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807404919] [2024-11-09 19:53:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 19:53:54,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:54,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807404919] [2024-11-09 19:53:54,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807404919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:53:54,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:53:54,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:53:54,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107079234] [2024-11-09 19:53:54,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:54,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:53:54,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:54,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:53:54,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:53:54,701 INFO L87 Difference]: Start difference. First operand 28306 states and 55584 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 19:53:56,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:53:56,884 INFO L93 Difference]: Finished difference Result 66419 states and 130745 transitions. [2024-11-09 19:53:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:53:56,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 311 [2024-11-09 19:53:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:53:56,940 INFO L225 Difference]: With dead ends: 66419 [2024-11-09 19:53:56,940 INFO L226 Difference]: Without dead ends: 36835 [2024-11-09 19:53:56,967 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 19:53:56,968 INFO L432 NwaCegarLoop]: 1079 mSDtfsCounter, 701 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 2139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:53:56,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1139 Invalid, 2139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:53:56,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36835 states. [2024-11-09 19:53:57,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36835 to 35555. [2024-11-09 19:53:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35555 states, 35554 states have (on average 1.9461101423187264) internal successors, (69192), 35554 states have internal predecessors, (69192), 0 states have call successors, (0), 0 states 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 19:53:57,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35555 states to 35555 states and 69192 transitions. [2024-11-09 19:53:57,631 INFO L78 Accepts]: Start accepts. Automaton has 35555 states and 69192 transitions. Word has length 311 [2024-11-09 19:53:57,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:53:57,631 INFO L471 AbstractCegarLoop]: Abstraction has 35555 states and 69192 transitions. [2024-11-09 19:53:57,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 19:53:57,631 INFO L276 IsEmpty]: Start isEmpty. Operand 35555 states and 69192 transitions. [2024-11-09 19:53:57,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-09 19:53:57,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:53:57,635 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:53:57,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:53:57,636 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:53:57,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:53:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1196748335, now seen corresponding path program 1 times [2024-11-09 19:53:57,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:53:57,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950894482] [2024-11-09 19:53:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:57,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:53:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 313 proven. 74 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-09 19:53:58,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:53:58,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950894482] [2024-11-09 19:53:58,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950894482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:53:58,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222447018] [2024-11-09 19:53:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:53:58,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:53:58,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:53:58,223 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 19:53:58,226 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 19:53:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:53:58,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:53:58,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:53:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 313 proven. 74 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-09 19:53:58,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:53:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-09 19:53:58,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222447018] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:53:58,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:53:58,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:53:58,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558826585] [2024-11-09 19:53:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:53:58,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:53:58,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:53:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:53:58,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:53:58,906 INFO L87 Difference]: Start difference. First operand 35555 states and 69192 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 19:54:02,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:02,555 INFO L93 Difference]: Finished difference Result 85629 states and 166786 transitions. [2024-11-09 19:54:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:54:02,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 320 [2024-11-09 19:54:02,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:02,612 INFO L225 Difference]: With dead ends: 85629 [2024-11-09 19:54:02,612 INFO L226 Difference]: Without dead ends: 49648 [2024-11-09 19:54:02,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:54:02,634 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1558 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 4255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:02,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 197 Invalid, 4255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 3757 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:54:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49648 states. [2024-11-09 19:54:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49648 to 47089. [2024-11-09 19:54:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47089 states, 47088 states have (on average 1.9509004417261298) internal successors, (91864), 47088 states have internal predecessors, (91864), 0 states have call successors, (0), 0 states 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 19:54:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47089 states to 47089 states and 91864 transitions. [2024-11-09 19:54:03,225 INFO L78 Accepts]: Start accepts. Automaton has 47089 states and 91864 transitions. Word has length 320 [2024-11-09 19:54:03,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:03,226 INFO L471 AbstractCegarLoop]: Abstraction has 47089 states and 91864 transitions. [2024-11-09 19:54:03,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 19:54:03,226 INFO L276 IsEmpty]: Start isEmpty. Operand 47089 states and 91864 transitions. [2024-11-09 19:54:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-09 19:54:03,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:03,234 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:54:03,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:54:03,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 19:54:03,435 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:03,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1745267535, now seen corresponding path program 1 times [2024-11-09 19:54:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:03,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867325547] [2024-11-09 19:54:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:03,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-09 19:54:04,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:04,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867325547] [2024-11-09 19:54:04,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867325547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:04,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:04,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:04,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104918044] [2024-11-09 19:54:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:04,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:04,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:04,149 INFO L87 Difference]: Start difference. First operand 47089 states and 91864 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:06,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:06,457 INFO L93 Difference]: Finished difference Result 114696 states and 223350 transitions. [2024-11-09 19:54:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:06,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 418 [2024-11-09 19:54:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:06,707 INFO L225 Difference]: With dead ends: 114696 [2024-11-09 19:54:06,708 INFO L226 Difference]: Without dead ends: 67182 [2024-11-09 19:54:06,734 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 19:54:06,738 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 833 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:06,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 352 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2078 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:54:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67182 states. [2024-11-09 19:54:07,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67182 to 65865. [2024-11-09 19:54:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65865 states, 65864 states have (on average 1.9421687112838577) internal successors, (127919), 65864 states have internal predecessors, (127919), 0 states have call successors, (0), 0 states 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 19:54:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65865 states to 65865 states and 127919 transitions. [2024-11-09 19:54:07,846 INFO L78 Accepts]: Start accepts. Automaton has 65865 states and 127919 transitions. Word has length 418 [2024-11-09 19:54:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:07,847 INFO L471 AbstractCegarLoop]: Abstraction has 65865 states and 127919 transitions. [2024-11-09 19:54:07,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 65865 states and 127919 transitions. [2024-11-09 19:54:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-09 19:54:07,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:07,860 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:07,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:54:07,860 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:07,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1004860763, now seen corresponding path program 1 times [2024-11-09 19:54:07,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:07,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583122855] [2024-11-09 19:54:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:07,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-09 19:54:08,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:08,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583122855] [2024-11-09 19:54:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583122855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:54:08,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:54:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:54:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106983650] [2024-11-09 19:54:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:54:08,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:54:08,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:08,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:54:08,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:54:08,367 INFO L87 Difference]: Start difference. First operand 65865 states and 127919 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:54:10,820 INFO L93 Difference]: Finished difference Result 146239 states and 284136 transitions. [2024-11-09 19:54:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:54:10,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 445 [2024-11-09 19:54:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:54:11,120 INFO L225 Difference]: With dead ends: 146239 [2024-11-09 19:54:11,120 INFO L226 Difference]: Without dead ends: 79949 [2024-11-09 19:54:11,160 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 19:54:11,161 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 848 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:54:11,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 305 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:54:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79949 states. [2024-11-09 19:54:12,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79949 to 60722. [2024-11-09 19:54:12,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60722 states, 60721 states have (on average 1.9444673177319214) internal successors, (118070), 60721 states have internal predecessors, (118070), 0 states have call successors, (0), 0 states 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 19:54:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60722 states to 60722 states and 118070 transitions. [2024-11-09 19:54:12,168 INFO L78 Accepts]: Start accepts. Automaton has 60722 states and 118070 transitions. Word has length 445 [2024-11-09 19:54:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:54:12,168 INFO L471 AbstractCegarLoop]: Abstraction has 60722 states and 118070 transitions. [2024-11-09 19:54:12,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:54:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 60722 states and 118070 transitions. [2024-11-09 19:54:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-11-09 19:54:12,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:54:12,183 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:12,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:54:12,184 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:54:12,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:54:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1726876398, now seen corresponding path program 1 times [2024-11-09 19:54:12,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:54:12,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830320161] [2024-11-09 19:54:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:12,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:54:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 301 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:54:13,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:54:13,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830320161] [2024-11-09 19:54:13,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830320161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:54:13,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104944703] [2024-11-09 19:54:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:54:13,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:54:13,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:54:13,333 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 19:54:13,334 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 19:54:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:54:13,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:54:13,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:54:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 218 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 19:54:13,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:54:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 218 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 19:54:15,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104944703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:54:15,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:54:15,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-09 19:54:15,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544011973] [2024-11-09 19:54:15,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:54:15,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 19:54:15,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:54:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 19:54:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:54:15,039 INFO L87 Difference]: Start difference. First operand 60722 states and 118070 transitions. Second operand has 9 states, 9 states have (on average 120.77777777777777) internal successors, (1087), 9 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)