./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.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 2c3b1a53bc376cbb6283db57f6430d0a17b3acc99aa70ab198c7c36e6e59ecc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:24:53,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:24:53,313 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:24:53,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:24:53,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:24:53,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:24:53,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:24:53,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:24:53,351 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:24:53,351 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:24:53,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:24:53,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:24:53,353 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:24:53,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:24:53,353 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:24:53,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:24:53,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:24:53,359 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:24:53,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:24:53,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:24:53,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:24:53,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:24:53,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:24:53,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:24:53,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:24:53,361 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:24:53,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:24:53,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:24:53,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:24:53,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:24:53,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:24:53,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:24:53,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:24:53,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:24:53,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:24:53,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:24:53,364 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:24:53,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:24:53,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:24:53,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:24:53,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:24:53,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:24:53,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c3b1a53bc376cbb6283db57f6430d0a17b3acc99aa70ab198c7c36e6e59ecc9 [2024-10-24 01:24:53,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:24:53,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:24:53,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:24:53,657 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:24:53,657 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:24:53,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2024-10-24 01:24:55,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:24:55,281 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:24:55,282 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2024-10-24 01:24:55,292 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12fed78e/3d8655e8a4c54e8ba0e875f21b7979d4/FLAG2876ec378 [2024-10-24 01:24:55,305 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12fed78e/3d8655e8a4c54e8ba0e875f21b7979d4 [2024-10-24 01:24:55,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:24:55,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:24:55,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:24:55,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:24:55,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:24:55,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4450aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55, skipping insertion in model container [2024-10-24 01:24:55,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,348 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:24:55,591 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2024-10-24 01:24:55,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:24:55,609 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:24:55,666 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2024-10-24 01:24:55,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:24:55,689 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:24:55,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55 WrapperNode [2024-10-24 01:24:55,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:24:55,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:24:55,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:24:55,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:24:55,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,741 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 339 [2024-10-24 01:24:55,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:24:55,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:24:55,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:24:55,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:24:55,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,776 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]. [2024-10-24 01:24:55,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,793 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,805 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:24:55,810 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:24:55,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:24:55,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:24:55,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (1/1) ... [2024-10-24 01:24:55,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:24:55,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:24:55,848 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) [2024-10-24 01:24:55,862 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 [2024-10-24 01:24:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:24:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:24:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:24:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:24:56,108 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:24:56,113 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:24:56,525 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-10-24 01:24:56,525 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:24:56,571 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:24:56,572 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:24:56,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:24:56 BoogieIcfgContainer [2024-10-24 01:24:56,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:24:56,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:24:56,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:24:56,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:24:56,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:24:55" (1/3) ... [2024-10-24 01:24:56,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de7c74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:24:56, skipping insertion in model container [2024-10-24 01:24:56,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:24:55" (2/3) ... [2024-10-24 01:24:56,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de7c74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:24:56, skipping insertion in model container [2024-10-24 01:24:56,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:24:56" (3/3) ... [2024-10-24 01:24:56,583 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2024-10-24 01:24:56,599 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:24:56,599 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:24:56,655 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:24:56,660 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;@2d696f8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:24:56,660 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:24:56,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 76 states have (on average 1.8026315789473684) internal successors, (137), 77 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-24 01:24:56,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:56,672 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:56,672 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:56,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:56,677 INFO L85 PathProgramCache]: Analyzing trace with hash -936899003, now seen corresponding path program 1 times [2024-10-24 01:24:56,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:56,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334658956] [2024-10-24 01:24:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:56,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:56,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:56,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334658956] [2024-10-24 01:24:56,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334658956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:56,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:56,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:24:56,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368062591] [2024-10-24 01:24:56,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:56,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 01:24:56,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:56,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 01:24:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:24:56,942 INFO L87 Difference]: Start difference. First operand has 78 states, 76 states have (on average 1.8026315789473684) internal successors, (137), 77 states have internal predecessors, (137), 0 states have call successors, (0), 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 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:56,973 INFO L93 Difference]: Finished difference Result 122 states and 208 transitions. [2024-10-24 01:24:56,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 01:24:56,976 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-24 01:24:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:56,985 INFO L225 Difference]: With dead ends: 122 [2024-10-24 01:24:56,985 INFO L226 Difference]: Without dead ends: 76 [2024-10-24 01:24:56,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:24:56,991 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:56,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-24 01:24:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-24 01:24:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.76) internal successors, (132), 75 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 132 transitions. [2024-10-24 01:24:57,041 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 132 transitions. Word has length 20 [2024-10-24 01:24:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:57,041 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 132 transitions. [2024-10-24 01:24:57,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 132 transitions. [2024-10-24 01:24:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-24 01:24:57,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:57,043 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:57,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:24:57,044 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:57,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:57,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1769720391, now seen corresponding path program 1 times [2024-10-24 01:24:57,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:57,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768302268] [2024-10-24 01:24:57,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:57,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:57,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:57,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768302268] [2024-10-24 01:24:57,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768302268] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:57,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:57,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:24:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640543235] [2024-10-24 01:24:57,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:57,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:24:57,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:24:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:24:57,261 INFO L87 Difference]: Start difference. First operand 76 states and 132 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:57,355 INFO L93 Difference]: Finished difference Result 120 states and 201 transitions. [2024-10-24 01:24:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:24:57,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-10-24 01:24:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:57,361 INFO L225 Difference]: With dead ends: 120 [2024-10-24 01:24:57,361 INFO L226 Difference]: Without dead ends: 76 [2024-10-24 01:24:57,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:24:57,362 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:57,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 353 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:24:57,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-24 01:24:57,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-24 01:24:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 75 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:57,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2024-10-24 01:24:57,370 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 20 [2024-10-24 01:24:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:57,370 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2024-10-24 01:24:57,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:57,371 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2024-10-24 01:24:57,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 01:24:57,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:57,372 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:57,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:24:57,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:57,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1805949634, now seen corresponding path program 1 times [2024-10-24 01:24:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:57,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924755014] [2024-10-24 01:24:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:57,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:57,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924755014] [2024-10-24 01:24:57,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924755014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:57,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:57,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:24:57,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511699838] [2024-10-24 01:24:57,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:57,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:24:57,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:24:57,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:24:57,764 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:58,072 INFO L93 Difference]: Finished difference Result 486 states and 761 transitions. [2024-10-24 01:24:58,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 01:24:58,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-10-24 01:24:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:58,076 INFO L225 Difference]: With dead ends: 486 [2024-10-24 01:24:58,076 INFO L226 Difference]: Without dead ends: 445 [2024-10-24 01:24:58,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-10-24 01:24:58,078 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 743 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:58,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1261 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:24:58,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-10-24 01:24:58,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 115. [2024-10-24 01:24:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4385964912280702) internal successors, (164), 114 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 164 transitions. [2024-10-24 01:24:58,102 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 164 transitions. Word has length 50 [2024-10-24 01:24:58,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:58,102 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 164 transitions. [2024-10-24 01:24:58,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,102 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 164 transitions. [2024-10-24 01:24:58,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:24:58,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:58,107 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:58,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:24:58,108 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:58,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1110513490, now seen corresponding path program 1 times [2024-10-24 01:24:58,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:58,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714907628] [2024-10-24 01:24:58,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:58,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:58,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:58,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714907628] [2024-10-24 01:24:58,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714907628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:58,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:58,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:58,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839949701] [2024-10-24 01:24:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:58,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:58,230 INFO L87 Difference]: Start difference. First operand 115 states and 164 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:58,256 INFO L93 Difference]: Finished difference Result 264 states and 403 transitions. [2024-10-24 01:24:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:58,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-10-24 01:24:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:58,258 INFO L225 Difference]: With dead ends: 264 [2024-10-24 01:24:58,259 INFO L226 Difference]: Without dead ends: 184 [2024-10-24 01:24:58,259 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 [2024-10-24 01:24:58,261 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 42 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:58,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 156 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:58,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-24 01:24:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2024-10-24 01:24:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.4917127071823204) internal successors, (270), 181 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 270 transitions. [2024-10-24 01:24:58,281 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 270 transitions. Word has length 52 [2024-10-24 01:24:58,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:58,282 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 270 transitions. [2024-10-24 01:24:58,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 270 transitions. [2024-10-24 01:24:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 01:24:58,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:58,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:58,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:24:58,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:58,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:58,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1108368538, now seen corresponding path program 1 times [2024-10-24 01:24:58,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:58,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64349927] [2024-10-24 01:24:58,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:58,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:58,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:58,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64349927] [2024-10-24 01:24:58,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64349927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:58,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:58,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:24:58,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669778051] [2024-10-24 01:24:58,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:58,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:24:58,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:24:58,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:24:58,686 INFO L87 Difference]: Start difference. First operand 182 states and 270 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:58,883 INFO L93 Difference]: Finished difference Result 331 states and 506 transitions. [2024-10-24 01:24:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:24:58,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-10-24 01:24:58,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:58,886 INFO L225 Difference]: With dead ends: 331 [2024-10-24 01:24:58,887 INFO L226 Difference]: Without dead ends: 184 [2024-10-24 01:24:58,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-10-24 01:24:58,889 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 204 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:58,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 336 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:24:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-24 01:24:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2024-10-24 01:24:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.4806629834254144) internal successors, (268), 181 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2024-10-24 01:24:58,909 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 52 [2024-10-24 01:24:58,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:58,913 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2024-10-24 01:24:58,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:58,913 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2024-10-24 01:24:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 01:24:58,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:58,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:58,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:24:58,916 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:58,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:58,919 INFO L85 PathProgramCache]: Analyzing trace with hash -13730052, now seen corresponding path program 1 times [2024-10-24 01:24:58,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:58,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071694192] [2024-10-24 01:24:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:58,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:59,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:59,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071694192] [2024-10-24 01:24:59,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071694192] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:59,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:59,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:24:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784003576] [2024-10-24 01:24:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:59,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:24:59,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:24:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:24:59,086 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:59,112 INFO L93 Difference]: Finished difference Result 188 states and 275 transitions. [2024-10-24 01:24:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:24:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-10-24 01:24:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:59,131 INFO L225 Difference]: With dead ends: 188 [2024-10-24 01:24:59,132 INFO L226 Difference]: Without dead ends: 186 [2024-10-24 01:24:59,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:24:59,133 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:59,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-10-24 01:24:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2024-10-24 01:24:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.4648648648648648) internal successors, (271), 185 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 271 transitions. [2024-10-24 01:24:59,149 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 271 transitions. Word has length 53 [2024-10-24 01:24:59,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:59,150 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 271 transitions. [2024-10-24 01:24:59,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 271 transitions. [2024-10-24 01:24:59,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 01:24:59,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:59,153 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:59,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:24:59,154 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:59,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1384081850, now seen corresponding path program 1 times [2024-10-24 01:24:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:59,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616392314] [2024-10-24 01:24:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:59,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:59,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616392314] [2024-10-24 01:24:59,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616392314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:59,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:59,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:59,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021930797] [2024-10-24 01:24:59,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:59,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:59,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:59,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:59,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:59,254 INFO L87 Difference]: Start difference. First operand 186 states and 271 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:59,279 INFO L93 Difference]: Finished difference Result 348 states and 524 transitions. [2024-10-24 01:24:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:59,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-10-24 01:24:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:59,282 INFO L225 Difference]: With dead ends: 348 [2024-10-24 01:24:59,282 INFO L226 Difference]: Without dead ends: 264 [2024-10-24 01:24:59,283 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 [2024-10-24 01:24:59,284 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 56 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:59,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 214 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-10-24 01:24:59,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2024-10-24 01:24:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.4865900383141764) internal successors, (388), 261 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 388 transitions. [2024-10-24 01:24:59,303 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 388 transitions. Word has length 54 [2024-10-24 01:24:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:59,303 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 388 transitions. [2024-10-24 01:24:59,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 388 transitions. [2024-10-24 01:24:59,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 01:24:59,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:59,305 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:59,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:24:59,305 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:59,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1612721082, now seen corresponding path program 1 times [2024-10-24 01:24:59,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:59,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697836618] [2024-10-24 01:24:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:59,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:59,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:59,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697836618] [2024-10-24 01:24:59,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697836618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:59,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:59,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:59,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765526381] [2024-10-24 01:24:59,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:59,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:59,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:59,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:59,370 INFO L87 Difference]: Start difference. First operand 262 states and 388 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:59,393 INFO L93 Difference]: Finished difference Result 688 states and 1048 transitions. [2024-10-24 01:24:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:59,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-10-24 01:24:59,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:59,396 INFO L225 Difference]: With dead ends: 688 [2024-10-24 01:24:59,396 INFO L226 Difference]: Without dead ends: 463 [2024-10-24 01:24:59,397 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 [2024-10-24 01:24:59,398 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 52 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:59,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 214 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-10-24 01:24:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2024-10-24 01:24:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.5) internal successors, (690), 460 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 690 transitions. [2024-10-24 01:24:59,417 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 690 transitions. Word has length 54 [2024-10-24 01:24:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:59,419 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 690 transitions. [2024-10-24 01:24:59,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,419 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 690 transitions. [2024-10-24 01:24:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 01:24:59,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:59,420 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:59,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:24:59,420 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:59,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:59,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2056590150, now seen corresponding path program 1 times [2024-10-24 01:24:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:59,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138989042] [2024-10-24 01:24:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:59,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:59,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:59,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138989042] [2024-10-24 01:24:59,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138989042] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:59,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:59,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747278145] [2024-10-24 01:24:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:59,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:59,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:59,488 INFO L87 Difference]: Start difference. First operand 461 states and 690 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:59,526 INFO L93 Difference]: Finished difference Result 1261 states and 1912 transitions. [2024-10-24 01:24:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:59,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-10-24 01:24:59,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:59,531 INFO L225 Difference]: With dead ends: 1261 [2024-10-24 01:24:59,531 INFO L226 Difference]: Without dead ends: 837 [2024-10-24 01:24:59,532 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 [2024-10-24 01:24:59,534 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 50 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:59,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 216 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:59,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2024-10-24 01:24:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 835. [2024-10-24 01:24:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 1.4940047961630696) internal successors, (1246), 834 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1246 transitions. [2024-10-24 01:24:59,563 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1246 transitions. Word has length 54 [2024-10-24 01:24:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:59,563 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 1246 transitions. [2024-10-24 01:24:59,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1246 transitions. [2024-10-24 01:24:59,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 01:24:59,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:59,565 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:59,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:24:59,565 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:59,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:59,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1349643706, now seen corresponding path program 1 times [2024-10-24 01:24:59,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:59,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568184278] [2024-10-24 01:24:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:59,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:59,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:59,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568184278] [2024-10-24 01:24:59,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568184278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:59,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:59,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:59,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465679443] [2024-10-24 01:24:59,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:59,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:59,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:59,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:59,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:59,626 INFO L87 Difference]: Start difference. First operand 835 states and 1246 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:59,665 INFO L93 Difference]: Finished difference Result 2335 states and 3496 transitions. [2024-10-24 01:24:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:59,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-10-24 01:24:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:59,671 INFO L225 Difference]: With dead ends: 2335 [2024-10-24 01:24:59,672 INFO L226 Difference]: Without dead ends: 1537 [2024-10-24 01:24:59,673 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 [2024-10-24 01:24:59,674 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 48 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:59,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 218 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2024-10-24 01:24:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2024-10-24 01:24:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 1.4745762711864407) internal successors, (2262), 1534 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2262 transitions. [2024-10-24 01:24:59,720 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2262 transitions. Word has length 54 [2024-10-24 01:24:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:59,720 INFO L471 AbstractCegarLoop]: Abstraction has 1535 states and 2262 transitions. [2024-10-24 01:24:59,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2262 transitions. [2024-10-24 01:24:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 01:24:59,721 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:59,721 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:59,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:24:59,721 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:59,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1652665018, now seen corresponding path program 1 times [2024-10-24 01:24:59,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:59,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348593148] [2024-10-24 01:24:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:24:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:24:59,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:24:59,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348593148] [2024-10-24 01:24:59,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348593148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:24:59,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:24:59,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:24:59,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997813968] [2024-10-24 01:24:59,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:24:59,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:24:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:24:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:24:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:24:59,805 INFO L87 Difference]: Start difference. First operand 1535 states and 2262 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:24:59,872 INFO L93 Difference]: Finished difference Result 4339 states and 6376 transitions. [2024-10-24 01:24:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:24:59,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-10-24 01:24:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:24:59,883 INFO L225 Difference]: With dead ends: 4339 [2024-10-24 01:24:59,883 INFO L226 Difference]: Without dead ends: 2841 [2024-10-24 01:24:59,886 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 [2024-10-24 01:24:59,886 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 54 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:24:59,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 220 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:24:59,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2024-10-24 01:24:59,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2839. [2024-10-24 01:24:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2838 states have (on average 1.4453840732910501) internal successors, (4102), 2838 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 4102 transitions. [2024-10-24 01:24:59,973 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 4102 transitions. Word has length 54 [2024-10-24 01:24:59,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:24:59,973 INFO L471 AbstractCegarLoop]: Abstraction has 2839 states and 4102 transitions. [2024-10-24 01:24:59,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:24:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 4102 transitions. [2024-10-24 01:24:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:24:59,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:24:59,975 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:24:59,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:24:59,976 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:24:59,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:24:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash 824044613, now seen corresponding path program 1 times [2024-10-24 01:24:59,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:24:59,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786039038] [2024-10-24 01:24:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:24:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:24:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:25:00,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:00,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786039038] [2024-10-24 01:25:00,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786039038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:00,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:00,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:25:00,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285681280] [2024-10-24 01:25:00,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:00,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:25:00,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:00,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:25:00,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:25:00,164 INFO L87 Difference]: Start difference. First operand 2839 states and 4102 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:00,548 INFO L93 Difference]: Finished difference Result 16627 states and 24092 transitions. [2024-10-24 01:25:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:25:00,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 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 72 [2024-10-24 01:25:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:00,602 INFO L225 Difference]: With dead ends: 16627 [2024-10-24 01:25:00,604 INFO L226 Difference]: Without dead ends: 14641 [2024-10-24 01:25:00,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:25:00,614 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 541 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:00,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 664 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:25:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14641 states. [2024-10-24 01:25:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14641 to 5239. [2024-10-24 01:25:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 1.4398625429553265) internal successors, (7542), 5238 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 7542 transitions. [2024-10-24 01:25:00,952 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 7542 transitions. Word has length 72 [2024-10-24 01:25:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:00,952 INFO L471 AbstractCegarLoop]: Abstraction has 5239 states and 7542 transitions. [2024-10-24 01:25:00,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:00,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 7542 transitions. [2024-10-24 01:25:00,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:25:00,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:00,954 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:00,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:25:00,955 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:00,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash 595405381, now seen corresponding path program 1 times [2024-10-24 01:25:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:00,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191428306] [2024-10-24 01:25:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:00,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:25:01,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:01,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191428306] [2024-10-24 01:25:01,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191428306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:01,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:01,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:25:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071611433] [2024-10-24 01:25:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:01,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:25:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:25:01,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:25:01,116 INFO L87 Difference]: Start difference. First operand 5239 states and 7542 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:01,567 INFO L93 Difference]: Finished difference Result 19427 states and 28124 transitions. [2024-10-24 01:25:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:25:01,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 72 [2024-10-24 01:25:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:01,626 INFO L225 Difference]: With dead ends: 19427 [2024-10-24 01:25:01,626 INFO L226 Difference]: Without dead ends: 16625 [2024-10-24 01:25:01,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:25:01,636 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 586 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:01,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 697 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:25:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16625 states. [2024-10-24 01:25:02,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16625 to 9031. [2024-10-24 01:25:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9031 states, 9030 states have (on average 1.4358803986710964) internal successors, (12966), 9030 states have internal predecessors, (12966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9031 states to 9031 states and 12966 transitions. [2024-10-24 01:25:02,045 INFO L78 Accepts]: Start accepts. Automaton has 9031 states and 12966 transitions. Word has length 72 [2024-10-24 01:25:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:02,046 INFO L471 AbstractCegarLoop]: Abstraction has 9031 states and 12966 transitions. [2024-10-24 01:25:02,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 9031 states and 12966 transitions. [2024-10-24 01:25:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:25:02,048 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:02,048 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:02,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:25:02,048 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:02,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash -30250683, now seen corresponding path program 1 times [2024-10-24 01:25:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:02,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835645732] [2024-10-24 01:25:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:25:02,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:02,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835645732] [2024-10-24 01:25:02,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835645732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:02,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:02,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:25:02,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890962317] [2024-10-24 01:25:02,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:02,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:25:02,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:02,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:25:02,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:25:02,247 INFO L87 Difference]: Start difference. First operand 9031 states and 12966 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:02,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:02,797 INFO L93 Difference]: Finished difference Result 22227 states and 32140 transitions. [2024-10-24 01:25:02,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:25:02,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 72 [2024-10-24 01:25:02,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:02,837 INFO L225 Difference]: With dead ends: 22227 [2024-10-24 01:25:02,837 INFO L226 Difference]: Without dead ends: 19425 [2024-10-24 01:25:02,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:25:02,846 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 631 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:02,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 662 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:25:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19425 states. [2024-10-24 01:25:03,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19425 to 11831. [2024-10-24 01:25:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11831 states, 11830 states have (on average 1.4355029585798817) internal successors, (16982), 11830 states have internal predecessors, (16982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11831 states to 11831 states and 16982 transitions. [2024-10-24 01:25:03,328 INFO L78 Accepts]: Start accepts. Automaton has 11831 states and 16982 transitions. Word has length 72 [2024-10-24 01:25:03,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:03,329 INFO L471 AbstractCegarLoop]: Abstraction has 11831 states and 16982 transitions. [2024-10-24 01:25:03,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 11831 states and 16982 transitions. [2024-10-24 01:25:03,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:25:03,332 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:03,332 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:03,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:25:03,332 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:03,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash 858482757, now seen corresponding path program 1 times [2024-10-24 01:25:03,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:03,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557902856] [2024-10-24 01:25:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:03,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 01:25:03,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:03,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557902856] [2024-10-24 01:25:03,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557902856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:03,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:03,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:25:03,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247326904] [2024-10-24 01:25:03,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:03,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:25:03,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:03,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:25:03,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:25:03,476 INFO L87 Difference]: Start difference. First operand 11831 states and 16982 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:03,999 INFO L93 Difference]: Finished difference Result 25027 states and 36156 transitions. [2024-10-24 01:25:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:25:04,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 72 [2024-10-24 01:25:04,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:04,040 INFO L225 Difference]: With dead ends: 25027 [2024-10-24 01:25:04,040 INFO L226 Difference]: Without dead ends: 22225 [2024-10-24 01:25:04,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:25:04,049 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 589 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:04,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 700 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:25:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22225 states. [2024-10-24 01:25:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22225 to 14631. [2024-10-24 01:25:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14631 states, 14630 states have (on average 1.43526999316473) internal successors, (20998), 14630 states have internal predecessors, (20998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14631 states to 14631 states and 20998 transitions. [2024-10-24 01:25:04,593 INFO L78 Accepts]: Start accepts. Automaton has 14631 states and 20998 transitions. Word has length 72 [2024-10-24 01:25:04,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:04,594 INFO L471 AbstractCegarLoop]: Abstraction has 14631 states and 20998 transitions. [2024-10-24 01:25:04,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:04,595 INFO L276 IsEmpty]: Start isEmpty. Operand 14631 states and 20998 transitions. [2024-10-24 01:25:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:25:04,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:04,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:04,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:25:04,597 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:04,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash 555461445, now seen corresponding path program 1 times [2024-10-24 01:25:04,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770068462] [2024-10-24 01:25:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:04,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:25:04,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770068462] [2024-10-24 01:25:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770068462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:04,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:25:04,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21173920] [2024-10-24 01:25:04,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:04,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:25:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:04,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:25:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:25:04,774 INFO L87 Difference]: Start difference. First operand 14631 states and 20998 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:05,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:05,577 INFO L93 Difference]: Finished difference Result 27827 states and 40172 transitions. [2024-10-24 01:25:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:25:05,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 72 [2024-10-24 01:25:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:05,631 INFO L225 Difference]: With dead ends: 27827 [2024-10-24 01:25:05,632 INFO L226 Difference]: Without dead ends: 25025 [2024-10-24 01:25:05,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:25:05,645 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 541 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:05,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 788 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:25:05,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25025 states. [2024-10-24 01:25:06,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25025 to 17431. [2024-10-24 01:25:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17431 states, 17430 states have (on average 1.4351118760757315) internal successors, (25014), 17430 states have internal predecessors, (25014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17431 states to 17431 states and 25014 transitions. [2024-10-24 01:25:06,300 INFO L78 Accepts]: Start accepts. Automaton has 17431 states and 25014 transitions. Word has length 72 [2024-10-24 01:25:06,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:06,301 INFO L471 AbstractCegarLoop]: Abstraction has 17431 states and 25014 transitions. [2024-10-24 01:25:06,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:06,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17431 states and 25014 transitions. [2024-10-24 01:25:06,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-24 01:25:06,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:06,303 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:06,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:25:06,304 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:06,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1054594028, now seen corresponding path program 1 times [2024-10-24 01:25:06,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:06,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75572949] [2024-10-24 01:25:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:06,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:06,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:06,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75572949] [2024-10-24 01:25:06,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75572949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:06,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:06,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:25:06,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683584752] [2024-10-24 01:25:06,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:06,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:25:06,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:06,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:25:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:25:06,429 INFO L87 Difference]: Start difference. First operand 17431 states and 25014 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:06,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:06,917 INFO L93 Difference]: Finished difference Result 34827 states and 49992 transitions. [2024-10-24 01:25:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:25:06,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2024-10-24 01:25:06,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:06,945 INFO L225 Difference]: With dead ends: 34827 [2024-10-24 01:25:06,946 INFO L226 Difference]: Without dead ends: 17433 [2024-10-24 01:25:06,961 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 [2024-10-24 01:25:06,962 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 45 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:06,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 220 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:25:06,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17433 states. [2024-10-24 01:25:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17433 to 17431. [2024-10-24 01:25:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17431 states, 17430 states have (on average 1.4181296615031556) internal successors, (24718), 17430 states have internal predecessors, (24718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17431 states to 17431 states and 24718 transitions. [2024-10-24 01:25:07,403 INFO L78 Accepts]: Start accepts. Automaton has 17431 states and 24718 transitions. Word has length 73 [2024-10-24 01:25:07,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:07,403 INFO L471 AbstractCegarLoop]: Abstraction has 17431 states and 24718 transitions. [2024-10-24 01:25:07,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:07,404 INFO L276 IsEmpty]: Start isEmpty. Operand 17431 states and 24718 transitions. [2024-10-24 01:25:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:25:07,405 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:07,405 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] [2024-10-24 01:25:07,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:25:07,406 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:07,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash 464946093, now seen corresponding path program 1 times [2024-10-24 01:25:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:07,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050088679] [2024-10-24 01:25:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:07,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:07,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:07,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050088679] [2024-10-24 01:25:07,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050088679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:07,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:07,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:25:07,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948066211] [2024-10-24 01:25:07,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:07,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:25:07,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:07,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:25:07,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:25:07,497 INFO L87 Difference]: Start difference. First operand 17431 states and 24718 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:07,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:07,689 INFO L93 Difference]: Finished difference Result 23901 states and 33995 transitions. [2024-10-24 01:25:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:25:07,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-10-24 01:25:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:07,704 INFO L225 Difference]: With dead ends: 23901 [2024-10-24 01:25:07,705 INFO L226 Difference]: Without dead ends: 6507 [2024-10-24 01:25:07,719 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 [2024-10-24 01:25:07,720 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 39 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:07,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 217 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:25:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2024-10-24 01:25:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 6500. [2024-10-24 01:25:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6500 states, 6499 states have (on average 1.416064009847669) internal successors, (9203), 6499 states have internal predecessors, (9203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6500 states to 6500 states and 9203 transitions. [2024-10-24 01:25:07,877 INFO L78 Accepts]: Start accepts. Automaton has 6500 states and 9203 transitions. Word has length 74 [2024-10-24 01:25:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:07,877 INFO L471 AbstractCegarLoop]: Abstraction has 6500 states and 9203 transitions. [2024-10-24 01:25:07,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6500 states and 9203 transitions. [2024-10-24 01:25:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 01:25:07,880 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:07,880 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:25:07,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:25:07,881 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:07,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:07,882 INFO L85 PathProgramCache]: Analyzing trace with hash -543313446, now seen corresponding path program 1 times [2024-10-24 01:25:07,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:07,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412749492] [2024-10-24 01:25:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:07,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412749492] [2024-10-24 01:25:07,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412749492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:07,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:07,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:25:07,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800275391] [2024-10-24 01:25:07,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:07,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:25:07,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:07,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:25:07,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:25:07,972 INFO L87 Difference]: Start difference. First operand 6500 states and 9203 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:08,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:08,047 INFO L93 Difference]: Finished difference Result 9728 states and 13781 transitions. [2024-10-24 01:25:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:25:08,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-24 01:25:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:08,055 INFO L225 Difference]: With dead ends: 9728 [2024-10-24 01:25:08,055 INFO L226 Difference]: Without dead ends: 3278 [2024-10-24 01:25:08,061 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 [2024-10-24 01:25:08,061 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 41 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:08,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 196 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:25:08,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2024-10-24 01:25:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 3276. [2024-10-24 01:25:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 3275 states have (on average 1.3969465648854962) internal successors, (4575), 3275 states have internal predecessors, (4575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4575 transitions. [2024-10-24 01:25:08,140 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4575 transitions. Word has length 75 [2024-10-24 01:25:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:08,140 INFO L471 AbstractCegarLoop]: Abstraction has 3276 states and 4575 transitions. [2024-10-24 01:25:08,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:08,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4575 transitions. [2024-10-24 01:25:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:25:08,141 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:08,142 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:25:08,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:25:08,142 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:08,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:08,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2064813752, now seen corresponding path program 1 times [2024-10-24 01:25:08,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:08,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565555123] [2024-10-24 01:25:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:08,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:08,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565555123] [2024-10-24 01:25:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565555123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:08,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:08,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:25:08,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132686711] [2024-10-24 01:25:08,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:08,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:25:08,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:08,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:25:08,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:25:08,240 INFO L87 Difference]: Start difference. First operand 3276 states and 4575 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:08,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:08,280 INFO L93 Difference]: Finished difference Result 4892 states and 6839 transitions. [2024-10-24 01:25:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:25:08,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-10-24 01:25:08,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:08,285 INFO L225 Difference]: With dead ends: 4892 [2024-10-24 01:25:08,285 INFO L226 Difference]: Without dead ends: 1666 [2024-10-24 01:25:08,290 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 [2024-10-24 01:25:08,290 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 38 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:08,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 181 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:25:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2024-10-24 01:25:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1664. [2024-10-24 01:25:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1663 states have (on average 1.375225496091401) internal successors, (2287), 1663 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2287 transitions. [2024-10-24 01:25:08,333 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2287 transitions. Word has length 77 [2024-10-24 01:25:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:08,334 INFO L471 AbstractCegarLoop]: Abstraction has 1664 states and 2287 transitions. [2024-10-24 01:25:08,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:08,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2287 transitions. [2024-10-24 01:25:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-24 01:25:08,335 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:08,335 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:08,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:25:08,335 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:08,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:08,336 INFO L85 PathProgramCache]: Analyzing trace with hash 603845174, now seen corresponding path program 1 times [2024-10-24 01:25:08,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:08,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433393649] [2024-10-24 01:25:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:08,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:08,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:08,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433393649] [2024-10-24 01:25:08,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433393649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:25:08,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:25:08,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:25:08,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907531411] [2024-10-24 01:25:08,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:25:08,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:25:08,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:08,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:25:08,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:25:08,424 INFO L87 Difference]: Start difference. First operand 1664 states and 2287 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:08,450 INFO L93 Difference]: Finished difference Result 2474 states and 3407 transitions. [2024-10-24 01:25:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:25:08,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-10-24 01:25:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:08,453 INFO L225 Difference]: With dead ends: 2474 [2024-10-24 01:25:08,453 INFO L226 Difference]: Without dead ends: 860 [2024-10-24 01:25:08,454 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 [2024-10-24 01:25:08,455 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 35 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:08,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 166 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:25:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-10-24 01:25:08,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 858. [2024-10-24 01:25:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 1.3488914819136524) internal successors, (1156), 857 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1156 transitions. [2024-10-24 01:25:08,512 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1156 transitions. Word has length 79 [2024-10-24 01:25:08,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:08,512 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1156 transitions. [2024-10-24 01:25:08,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1156 transitions. [2024-10-24 01:25:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 01:25:08,514 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:08,514 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:25:08,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 01:25:08,514 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:08,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:08,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1189473116, now seen corresponding path program 1 times [2024-10-24 01:25:08,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:08,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589993268] [2024-10-24 01:25:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:08,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:09,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:09,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589993268] [2024-10-24 01:25:09,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589993268] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:25:09,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228362189] [2024-10-24 01:25:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:09,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:09,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:25:09,714 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) [2024-10-24 01:25:09,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:25:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:09,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 01:25:09,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:10,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:25:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:11,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228362189] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:25:11,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:25:11,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2024-10-24 01:25:11,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077177105] [2024-10-24 01:25:11,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:25:11,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 01:25:11,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 01:25:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2024-10-24 01:25:11,935 INFO L87 Difference]: Start difference. First operand 858 states and 1156 transitions. Second operand has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 25 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:14,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:14,067 INFO L93 Difference]: Finished difference Result 4616 states and 6311 transitions. [2024-10-24 01:25:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-24 01:25:14,070 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 25 states have internal predecessors, (225), 0 states have call successors, (0), 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 81 [2024-10-24 01:25:14,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:14,079 INFO L225 Difference]: With dead ends: 4616 [2024-10-24 01:25:14,079 INFO L226 Difference]: Without dead ends: 3808 [2024-10-24 01:25:14,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=637, Invalid=3145, Unknown=0, NotChecked=0, Total=3782 [2024-10-24 01:25:14,083 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 1620 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:14,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 648 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 01:25:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2024-10-24 01:25:14,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3744. [2024-10-24 01:25:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 1.3334223884584557) internal successors, (4991), 3743 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 4991 transitions. [2024-10-24 01:25:14,211 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 4991 transitions. Word has length 81 [2024-10-24 01:25:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:14,212 INFO L471 AbstractCegarLoop]: Abstraction has 3744 states and 4991 transitions. [2024-10-24 01:25:14,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 25 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 4991 transitions. [2024-10-24 01:25:14,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-24 01:25:14,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:14,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:14,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 01:25:14,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-24 01:25:14,415 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:14,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:14,417 INFO L85 PathProgramCache]: Analyzing trace with hash 704184899, now seen corresponding path program 1 times [2024-10-24 01:25:14,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:14,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583694751] [2024-10-24 01:25:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:14,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583694751] [2024-10-24 01:25:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583694751] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:25:15,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054823486] [2024-10-24 01:25:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:15,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:15,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:25:15,345 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) [2024-10-24 01:25:15,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:25:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:15,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 01:25:15,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:15,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:25:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:16,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054823486] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:25:16,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:25:16,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2024-10-24 01:25:16,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528248910] [2024-10-24 01:25:16,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:25:16,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 01:25:16,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 01:25:16,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-10-24 01:25:16,565 INFO L87 Difference]: Start difference. First operand 3744 states and 4991 transitions. Second operand has 24 states, 24 states have (on average 8.25) internal successors, (198), 23 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:17,129 INFO L93 Difference]: Finished difference Result 11226 states and 15034 transitions. [2024-10-24 01:25:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 01:25:17,130 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.25) internal successors, (198), 23 states have internal predecessors, (198), 0 states have call successors, (0), 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 82 [2024-10-24 01:25:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:17,139 INFO L225 Difference]: With dead ends: 11226 [2024-10-24 01:25:17,139 INFO L226 Difference]: Without dead ends: 7532 [2024-10-24 01:25:17,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2024-10-24 01:25:17,144 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 1112 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:17,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 549 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:25:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7532 states. [2024-10-24 01:25:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7532 to 7424. [2024-10-24 01:25:17,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7424 states, 7423 states have (on average 1.3168530243836725) internal successors, (9775), 7423 states have internal predecessors, (9775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7424 states to 7424 states and 9775 transitions. [2024-10-24 01:25:17,331 INFO L78 Accepts]: Start accepts. Automaton has 7424 states and 9775 transitions. Word has length 82 [2024-10-24 01:25:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:17,331 INFO L471 AbstractCegarLoop]: Abstraction has 7424 states and 9775 transitions. [2024-10-24 01:25:17,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.25) internal successors, (198), 23 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 7424 states and 9775 transitions. [2024-10-24 01:25:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-24 01:25:17,333 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:17,333 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:17,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 01:25:17,533 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,SelfDestructingSolverStorable22 [2024-10-24 01:25:17,534 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:17,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash -15723470, now seen corresponding path program 1 times [2024-10-24 01:25:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:17,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025801999] [2024-10-24 01:25:17,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:17,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:17,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:17,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025801999] [2024-10-24 01:25:17,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025801999] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:25:17,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849185628] [2024-10-24 01:25:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:17,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:17,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:25:17,858 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) [2024-10-24 01:25:17,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 01:25:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:17,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 01:25:17,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:18,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:25:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:19,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849185628] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:25:19,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:25:19,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 12] total 29 [2024-10-24 01:25:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932709232] [2024-10-24 01:25:19,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:25:19,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-24 01:25:19,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-24 01:25:19,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2024-10-24 01:25:19,405 INFO L87 Difference]: Start difference. First operand 7424 states and 9775 transitions. Second operand has 30 states, 30 states have (on average 7.5) internal successors, (225), 29 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:21,044 INFO L93 Difference]: Finished difference Result 26258 states and 35057 transitions. [2024-10-24 01:25:21,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-24 01:25:21,053 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.5) internal successors, (225), 29 states have internal predecessors, (225), 0 states have call successors, (0), 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 83 [2024-10-24 01:25:21,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:21,077 INFO L225 Difference]: With dead ends: 26258 [2024-10-24 01:25:21,077 INFO L226 Difference]: Without dead ends: 18884 [2024-10-24 01:25:21,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=771, Invalid=3389, Unknown=0, NotChecked=0, Total=4160 [2024-10-24 01:25:21,090 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 1460 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:21,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 897 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:25:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18884 states. [2024-10-24 01:25:21,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18884 to 18616. [2024-10-24 01:25:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18616 states, 18615 states have (on average 1.3118990061778135) internal successors, (24421), 18615 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18616 states to 18616 states and 24421 transitions. [2024-10-24 01:25:21,604 INFO L78 Accepts]: Start accepts. Automaton has 18616 states and 24421 transitions. Word has length 83 [2024-10-24 01:25:21,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:21,605 INFO L471 AbstractCegarLoop]: Abstraction has 18616 states and 24421 transitions. [2024-10-24 01:25:21,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.5) internal successors, (225), 29 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:21,605 INFO L276 IsEmpty]: Start isEmpty. Operand 18616 states and 24421 transitions. [2024-10-24 01:25:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 01:25:21,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:21,607 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:21,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 01:25:21,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:21,812 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:21,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:21,812 INFO L85 PathProgramCache]: Analyzing trace with hash 113277619, now seen corresponding path program 1 times [2024-10-24 01:25:21,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:21,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152546176] [2024-10-24 01:25:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:21,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:22,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:22,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152546176] [2024-10-24 01:25:22,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152546176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:25:22,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670558813] [2024-10-24 01:25:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:22,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:22,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:25:22,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:25:22,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 01:25:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:22,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-24 01:25:22,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:24,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:25:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:27,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670558813] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:25:27,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:25:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 17] total 37 [2024-10-24 01:25:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110025050] [2024-10-24 01:25:27,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:25:27,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-24 01:25:27,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-24 01:25:27,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2024-10-24 01:25:27,420 INFO L87 Difference]: Start difference. First operand 18616 states and 24421 transitions. Second operand has 38 states, 38 states have (on average 6.0) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:33,839 INFO L93 Difference]: Finished difference Result 53222 states and 69648 transitions. [2024-10-24 01:25:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-24 01:25:33,840 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.0) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-24 01:25:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:33,878 INFO L225 Difference]: With dead ends: 53222 [2024-10-24 01:25:33,879 INFO L226 Difference]: Without dead ends: 34668 [2024-10-24 01:25:33,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1813, Invalid=7693, Unknown=0, NotChecked=0, Total=9506 [2024-10-24 01:25:33,898 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 2961 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2961 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:33,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2961 Valid, 1718 Invalid, 2295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 01:25:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34668 states. [2024-10-24 01:25:34,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34668 to 24484. [2024-10-24 01:25:34,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24484 states, 24483 states have (on average 1.30306743454642) internal successors, (31903), 24483 states have internal predecessors, (31903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24484 states to 24484 states and 31903 transitions. [2024-10-24 01:25:34,628 INFO L78 Accepts]: Start accepts. Automaton has 24484 states and 31903 transitions. Word has length 84 [2024-10-24 01:25:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:34,628 INFO L471 AbstractCegarLoop]: Abstraction has 24484 states and 31903 transitions. [2024-10-24 01:25:34,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.0) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 24484 states and 31903 transitions. [2024-10-24 01:25:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 01:25:34,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:34,631 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:34,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 01:25:34,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:34,832 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:34,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1381039718, now seen corresponding path program 1 times [2024-10-24 01:25:34,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:34,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804490084] [2024-10-24 01:25:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:34,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:35,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:35,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804490084] [2024-10-24 01:25:35,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804490084] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:25:35,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089292714] [2024-10-24 01:25:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:35,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:35,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:25:35,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:25:35,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 01:25:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:35,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 01:25:35,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:36,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:25:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:37,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089292714] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:25:37,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:25:37,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 16] total 36 [2024-10-24 01:25:37,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558772820] [2024-10-24 01:25:37,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:25:37,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-24 01:25:37,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:25:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-24 01:25:37,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2024-10-24 01:25:37,614 INFO L87 Difference]: Start difference. First operand 24484 states and 31903 transitions. Second operand has 37 states, 37 states have (on average 6.135135135135135) internal successors, (227), 36 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:25:39,397 INFO L93 Difference]: Finished difference Result 45278 states and 59102 transitions. [2024-10-24 01:25:39,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-24 01:25:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.135135135135135) internal successors, (227), 36 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-24 01:25:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:25:39,439 INFO L225 Difference]: With dead ends: 45278 [2024-10-24 01:25:39,439 INFO L226 Difference]: Without dead ends: 36514 [2024-10-24 01:25:39,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=575, Invalid=2395, Unknown=0, NotChecked=0, Total=2970 [2024-10-24 01:25:39,455 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 1400 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:25:39,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 1112 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:25:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36514 states. [2024-10-24 01:25:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36514 to 23252. [2024-10-24 01:25:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23252 states, 23251 states have (on average 1.2983957679239602) internal successors, (30189), 23251 states have internal predecessors, (30189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23252 states to 23252 states and 30189 transitions. [2024-10-24 01:25:40,257 INFO L78 Accepts]: Start accepts. Automaton has 23252 states and 30189 transitions. Word has length 85 [2024-10-24 01:25:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:25:40,257 INFO L471 AbstractCegarLoop]: Abstraction has 23252 states and 30189 transitions. [2024-10-24 01:25:40,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.135135135135135) internal successors, (227), 36 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:25:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 23252 states and 30189 transitions. [2024-10-24 01:25:40,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 01:25:40,259 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:25:40,259 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:25:40,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 01:25:40,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-24 01:25:40,460 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:25:40,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:25:40,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1337001902, now seen corresponding path program 1 times [2024-10-24 01:25:40,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:25:40,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012481986] [2024-10-24 01:25:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:40,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:25:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:43,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:25:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012481986] [2024-10-24 01:25:43,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012481986] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:25:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988138408] [2024-10-24 01:25:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:25:43,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:25:43,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:25:43,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:25:43,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 01:25:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:25:43,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-10-24 01:25:43,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:25:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:25:53,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:26:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:26:00,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988138408] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:26:00,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:26:00,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27, 32] total 87 [2024-10-24 01:26:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133382639] [2024-10-24 01:26:00,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:26:00,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-10-24 01:26:00,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:00,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-10-24 01:26:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=6766, Unknown=0, NotChecked=0, Total=7482 [2024-10-24 01:26:00,800 INFO L87 Difference]: Start difference. First operand 23252 states and 30189 transitions. Second operand has 87 states, 87 states have (on average 2.793103448275862) internal successors, (243), 87 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)