./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label58.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label58.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 58e74a4dd86a124eeee2194e768898c8688a10c1933d2ce8d825a1d945ebd262 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:18:32,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:18:32,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:18:32,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:18:32,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:18:32,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:18:32,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:18:32,731 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:18:32,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:18:32,733 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:18:32,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:18:32,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:18:32,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:18:32,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:18:32,735 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:18:32,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:18:32,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:18:32,736 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:18:32,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:18:32,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:18:32,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:18:32,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:18:32,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:18:32,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:18:32,743 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:18:32,743 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:18:32,743 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:18:32,744 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:18:32,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:18:32,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:18:32,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:18:32,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:18:32,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:18:32,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:18:32,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:18:32,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:18:32,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:18:32,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:18:32,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:18:32,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:18:32,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:18:32,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:18:32,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58e74a4dd86a124eeee2194e768898c8688a10c1933d2ce8d825a1d945ebd262 [2024-11-08 11:18:33,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:18:33,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:18:33,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:18:33,050 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:18:33,050 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:18:33,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label58.c [2024-11-08 11:18:34,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:18:35,008 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:18:35,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label58.c [2024-11-08 11:18:35,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41e81474/7d15f559cb654c86aec9336364e866b7/FLAGc60325392 [2024-11-08 11:18:35,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e41e81474/7d15f559cb654c86aec9336364e866b7 [2024-11-08 11:18:35,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:18:35,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:18:35,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:18:35,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:18:35,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:18:35,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:18:35" (1/1) ... [2024-11-08 11:18:35,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0bab96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:35, skipping insertion in model container [2024-11-08 11:18:35,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:18:35" (1/1) ... [2024-11-08 11:18:35,182 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:18:35,461 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label58.c[4474,4487] [2024-11-08 11:18:36,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:18:36,269 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:18:36,291 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label58.c[4474,4487] [2024-11-08 11:18:36,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:18:36,692 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:18:36,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36 WrapperNode [2024-11-08 11:18:36,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:18:36,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:18:36,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:18:36,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:18:36,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:36,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,142 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-08 11:18:37,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:18:37,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:18:37,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:18:37,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:18:37,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,198 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,389 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 11:18:37,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,775 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:18:37,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:18:37,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:18:37,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:18:37,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (1/1) ... [2024-11-08 11:18:37,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:18:37,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:18:37,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 11:18:37,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 11:18:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:18:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:18:37,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:18:37,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:18:37,945 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:18:37,947 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:18:42,269 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-08 11:18:42,270 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:18:42,307 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:18:42,308 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:18:42,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:18:42 BoogieIcfgContainer [2024-11-08 11:18:42,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:18:42,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:18:42,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:18:42,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:18:42,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:18:35" (1/3) ... [2024-11-08 11:18:42,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57577ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:18:42, skipping insertion in model container [2024-11-08 11:18:42,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:18:36" (2/3) ... [2024-11-08 11:18:42,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57577ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:18:42, skipping insertion in model container [2024-11-08 11:18:42,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:18:42" (3/3) ... [2024-11-08 11:18:42,318 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label58.c [2024-11-08 11:18:42,336 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:18:42,336 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:18:42,435 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:18:42,443 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;@71c73eb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:18:42,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:18:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 11:18:42,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:42,463 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] [2024-11-08 11:18:42,464 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:42,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1089129850, now seen corresponding path program 1 times [2024-11-08 11:18:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:42,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372739593] [2024-11-08 11:18:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:42,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:18:42,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372739593] [2024-11-08 11:18:42,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372739593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:42,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:42,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:18:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629711954] [2024-11-08 11:18:42,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:42,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:42,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:42,878 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:46,693 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-08 11:18:46,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:46,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-11-08 11:18:46,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:46,720 INFO L225 Difference]: With dead ends: 2388 [2024-11-08 11:18:46,720 INFO L226 Difference]: Without dead ends: 1506 [2024-11-08 11:18:46,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:46,729 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 825 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:46,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-08 11:18:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-08 11:18:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-08 11:18:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2024-11-08 11:18:46,866 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 34 [2024-11-08 11:18:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:46,867 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2024-11-08 11:18:46,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2024-11-08 11:18:46,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 11:18:46,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:46,873 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:46,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:18:46,874 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:46,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:46,875 INFO L85 PathProgramCache]: Analyzing trace with hash 926035172, now seen corresponding path program 1 times [2024-11-08 11:18:46,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:46,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811292177] [2024-11-08 11:18:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:46,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:18:47,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:47,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811292177] [2024-11-08 11:18:47,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811292177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:47,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:47,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:18:47,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58051412] [2024-11-08 11:18:47,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:47,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:47,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:47,141 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:50,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:50,311 INFO L93 Difference]: Finished difference Result 4514 states and 8438 transitions. [2024-11-08 11:18:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:50,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-08 11:18:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:50,325 INFO L225 Difference]: With dead ends: 4514 [2024-11-08 11:18:50,325 INFO L226 Difference]: Without dead ends: 3010 [2024-11-08 11:18:50,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:50,330 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:50,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-08 11:18:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2024-11-08 11:18:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2024-11-08 11:18:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions. [2024-11-08 11:18:50,396 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 107 [2024-11-08 11:18:50,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:50,397 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions. [2024-11-08 11:18:50,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions. [2024-11-08 11:18:50,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-08 11:18:50,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:50,402 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:50,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:18:50,404 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:50,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash -336797985, now seen corresponding path program 1 times [2024-11-08 11:18:50,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:50,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150838264] [2024-11-08 11:18:50,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:50,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:18:50,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:50,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150838264] [2024-11-08 11:18:50,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150838264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:50,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:50,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:50,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780229195] [2024-11-08 11:18:50,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:50,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:18:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:50,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:18:50,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:18:50,814 INFO L87 Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:55,381 INFO L93 Difference]: Finished difference Result 8267 states and 13429 transitions. [2024-11-08 11:18:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:18:55,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2024-11-08 11:18:55,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:55,401 INFO L225 Difference]: With dead ends: 8267 [2024-11-08 11:18:55,402 INFO L226 Difference]: Without dead ends: 5261 [2024-11-08 11:18:55,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:18:55,408 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:55,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-08 11:18:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2024-11-08 11:18:55,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2024-11-08 11:18:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions. [2024-11-08 11:18:55,502 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 120 [2024-11-08 11:18:55,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:55,503 INFO L471 AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions. [2024-11-08 11:18:55,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions. [2024-11-08 11:18:55,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-08 11:18:55,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:55,511 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:55,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:18:55,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:55,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash -174135366, now seen corresponding path program 1 times [2024-11-08 11:18:55,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:55,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311770938] [2024-11-08 11:18:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:55,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 11:18:55,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:55,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311770938] [2024-11-08 11:18:55,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311770938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:18:55,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535180812] [2024-11-08 11:18:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:55,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:18:55,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:18:55,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:18:55,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:18:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:56,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:18:56,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:18:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 11:18:56,271 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:18:56,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535180812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:56,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:18:56,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-08 11:18:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184134410] [2024-11-08 11:18:56,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:56,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:56,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:56,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:18:56,274 INFO L87 Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:59,129 INFO L93 Difference]: Finished difference Result 14275 states and 22313 transitions. [2024-11-08 11:18:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:59,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 175 [2024-11-08 11:18:59,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:59,158 INFO L225 Difference]: With dead ends: 14275 [2024-11-08 11:18:59,158 INFO L226 Difference]: Without dead ends: 9767 [2024-11-08 11:18:59,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:18:59,168 INFO L432 NwaCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:59,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 11:18:59,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-08 11:18:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-08 11:18:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions. [2024-11-08 11:18:59,385 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 175 [2024-11-08 11:18:59,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:59,387 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions. [2024-11-08 11:18:59,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:59,387 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions. [2024-11-08 11:18:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-08 11:18:59,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:59,393 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:59,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 11:18:59,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:18:59,595 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:59,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1562246478, now seen corresponding path program 1 times [2024-11-08 11:18:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:59,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572745073] [2024-11-08 11:18:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:59,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:18:59,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572745073] [2024-11-08 11:18:59,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572745073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:59,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:59,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825049314] [2024-11-08 11:18:59,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:59,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:18:59,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:59,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:18:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:18:59,943 INFO L87 Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:03,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:03,146 INFO L93 Difference]: Finished difference Result 23324 states and 32177 transitions. [2024-11-08 11:19:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:19:03,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2024-11-08 11:19:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:03,182 INFO L225 Difference]: With dead ends: 23324 [2024-11-08 11:19:03,183 INFO L226 Difference]: Without dead ends: 14273 [2024-11-08 11:19:03,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:19:03,195 INFO L432 NwaCegarLoop]: 694 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:03,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 708 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 11:19:03,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14273 states. [2024-11-08 11:19:03,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 14273. [2024-11-08 11:19:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.2779568385650224) internal successors, (18239), 14272 states have internal predecessors, (18239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18239 transitions. [2024-11-08 11:19:03,427 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 18239 transitions. Word has length 191 [2024-11-08 11:19:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:03,427 INFO L471 AbstractCegarLoop]: Abstraction has 14273 states and 18239 transitions. [2024-11-08 11:19:03,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 18239 transitions. [2024-11-08 11:19:03,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-08 11:19:03,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:03,431 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:03,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:19:03,432 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:03,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash -204140523, now seen corresponding path program 1 times [2024-11-08 11:19:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42461376] [2024-11-08 11:19:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 11:19:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42461376] [2024-11-08 11:19:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42461376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:03,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:03,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:03,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577878808] [2024-11-08 11:19:03,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:03,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:03,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:03,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:03,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:03,657 INFO L87 Difference]: Start difference. First operand 14273 states and 18239 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:06,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:06,666 INFO L93 Difference]: Finished difference Result 39058 states and 50794 transitions. [2024-11-08 11:19:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:06,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2024-11-08 11:19:06,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:06,717 INFO L225 Difference]: With dead ends: 39058 [2024-11-08 11:19:06,718 INFO L226 Difference]: Without dead ends: 25538 [2024-11-08 11:19:06,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:06,733 INFO L432 NwaCegarLoop]: 1283 mSDtfsCounter, 732 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:06,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1291 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 11:19:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-08 11:19:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 25538. [2024-11-08 11:19:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25538 states, 25537 states have (on average 1.2637741316521127) internal successors, (32273), 25537 states have internal predecessors, (32273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25538 states to 25538 states and 32273 transitions. [2024-11-08 11:19:07,045 INFO L78 Accepts]: Start accepts. Automaton has 25538 states and 32273 transitions. Word has length 265 [2024-11-08 11:19:07,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:07,046 INFO L471 AbstractCegarLoop]: Abstraction has 25538 states and 32273 transitions. [2024-11-08 11:19:07,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 25538 states and 32273 transitions. [2024-11-08 11:19:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-08 11:19:07,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:07,052 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:07,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:19:07,053 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:07,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:07,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1617672100, now seen corresponding path program 1 times [2024-11-08 11:19:07,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:07,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680330316] [2024-11-08 11:19:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:07,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-08 11:19:07,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:07,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680330316] [2024-11-08 11:19:07,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680330316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:07,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:07,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:19:07,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027170968] [2024-11-08 11:19:07,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:07,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:07,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:07,298 INFO L87 Difference]: Start difference. First operand 25538 states and 32273 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:09,953 INFO L93 Difference]: Finished difference Result 50323 states and 63788 transitions. [2024-11-08 11:19:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:09,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2024-11-08 11:19:09,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:09,998 INFO L225 Difference]: With dead ends: 50323 [2024-11-08 11:19:09,998 INFO L226 Difference]: Without dead ends: 25538 [2024-11-08 11:19:10,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:10,019 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 690 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:10,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 427 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:19:10,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-08 11:19:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 21783. [2024-11-08 11:19:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 21782 states have (on average 1.1813883022679277) internal successors, (25733), 21782 states have internal predecessors, (25733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 25733 transitions. [2024-11-08 11:19:10,285 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 25733 transitions. Word has length 323 [2024-11-08 11:19:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:10,285 INFO L471 AbstractCegarLoop]: Abstraction has 21783 states and 25733 transitions. [2024-11-08 11:19:10,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 25733 transitions. [2024-11-08 11:19:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-08 11:19:10,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:10,295 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:10,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:19:10,296 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:10,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash -638290817, now seen corresponding path program 1 times [2024-11-08 11:19:10,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:10,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828913764] [2024-11-08 11:19:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:10,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 136 proven. 230 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-08 11:19:10,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:10,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828913764] [2024-11-08 11:19:10,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828913764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:19:10,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573986845] [2024-11-08 11:19:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:10,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:19:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:19:10,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:19:10,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:19:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:10,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:19:10,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:19:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 11:19:11,277 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:19:11,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573986845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:11,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:19:11,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 11:19:11,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783320749] [2024-11-08 11:19:11,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:11,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:11,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:11,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:11,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:19:11,280 INFO L87 Difference]: Start difference. First operand 21783 states and 25733 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:14,218 INFO L93 Difference]: Finished difference Result 58584 states and 70114 transitions. [2024-11-08 11:19:14,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:14,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 413 [2024-11-08 11:19:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:14,285 INFO L225 Difference]: With dead ends: 58584 [2024-11-08 11:19:14,285 INFO L226 Difference]: Without dead ends: 37554 [2024-11-08 11:19:14,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:19:14,311 INFO L432 NwaCegarLoop]: 937 mSDtfsCounter, 670 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:14,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 944 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 11:19:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2024-11-08 11:19:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 37554. [2024-11-08 11:19:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37554 states, 37553 states have (on average 1.1895454424413496) internal successors, (44671), 37553 states have internal predecessors, (44671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37554 states to 37554 states and 44671 transitions. [2024-11-08 11:19:14,716 INFO L78 Accepts]: Start accepts. Automaton has 37554 states and 44671 transitions. Word has length 413 [2024-11-08 11:19:14,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:14,717 INFO L471 AbstractCegarLoop]: Abstraction has 37554 states and 44671 transitions. [2024-11-08 11:19:14,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:14,717 INFO L276 IsEmpty]: Start isEmpty. Operand 37554 states and 44671 transitions. [2024-11-08 11:19:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-08 11:19:14,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:14,732 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:14,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 11:19:14,932 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,SelfDestructingSolverStorable7 [2024-11-08 11:19:14,933 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:14,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:14,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2032909390, now seen corresponding path program 1 times [2024-11-08 11:19:14,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:14,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133547795] [2024-11-08 11:19:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:14,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-08 11:19:15,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:15,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133547795] [2024-11-08 11:19:15,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133547795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:15,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:15,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:15,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145089793] [2024-11-08 11:19:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:15,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:15,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:15,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:15,301 INFO L87 Difference]: Start difference. First operand 37554 states and 44671 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:17,696 INFO L93 Difference]: Finished difference Result 95383 states and 114715 transitions. [2024-11-08 11:19:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:17,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 414 [2024-11-08 11:19:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:17,784 INFO L225 Difference]: With dead ends: 95383 [2024-11-08 11:19:17,784 INFO L226 Difference]: Without dead ends: 58582 [2024-11-08 11:19:17,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:17,820 INFO L432 NwaCegarLoop]: 1219 mSDtfsCounter, 703 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:17,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1227 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 11:19:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58582 states. [2024-11-08 11:19:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58582 to 57080. [2024-11-08 11:19:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57080 states, 57079 states have (on average 1.1586397799540986) internal successors, (66134), 57079 states have internal predecessors, (66134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 66134 transitions. [2024-11-08 11:19:18,700 INFO L78 Accepts]: Start accepts. Automaton has 57080 states and 66134 transitions. Word has length 414 [2024-11-08 11:19:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:18,700 INFO L471 AbstractCegarLoop]: Abstraction has 57080 states and 66134 transitions. [2024-11-08 11:19:18,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 57080 states and 66134 transitions. [2024-11-08 11:19:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-08 11:19:18,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:18,707 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:18,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 11:19:18,708 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:18,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash 569812594, now seen corresponding path program 1 times [2024-11-08 11:19:18,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:18,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407729736] [2024-11-08 11:19:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:18,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-08 11:19:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407729736] [2024-11-08 11:19:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407729736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:18,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:18,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:18,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959558410] [2024-11-08 11:19:18,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:18,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:18,951 INFO L87 Difference]: Start difference. First operand 57080 states and 66134 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:22,243 INFO L93 Difference]: Finished difference Result 149455 states and 174891 transitions. [2024-11-08 11:19:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:22,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 420 [2024-11-08 11:19:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:22,494 INFO L225 Difference]: With dead ends: 149455 [2024-11-08 11:19:22,495 INFO L226 Difference]: Without dead ends: 93128 [2024-11-08 11:19:22,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:22,518 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 707 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:22,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 536 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 11:19:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93128 states. [2024-11-08 11:19:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93128 to 84116. [2024-11-08 11:19:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84116 states, 84115 states have (on average 1.1430422635677346) internal successors, (96147), 84115 states have internal predecessors, (96147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 96147 transitions. [2024-11-08 11:19:23,667 INFO L78 Accepts]: Start accepts. Automaton has 84116 states and 96147 transitions. Word has length 420 [2024-11-08 11:19:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:23,668 INFO L471 AbstractCegarLoop]: Abstraction has 84116 states and 96147 transitions. [2024-11-08 11:19:23,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 84116 states and 96147 transitions. [2024-11-08 11:19:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2024-11-08 11:19:23,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:23,688 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:23,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:19:23,688 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:23,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1856209863, now seen corresponding path program 1 times [2024-11-08 11:19:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838890684] [2024-11-08 11:19:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:23,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 11:19:24,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:24,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838890684] [2024-11-08 11:19:24,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838890684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:24,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:24,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:24,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281681077] [2024-11-08 11:19:24,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:24,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:24,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:24,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:24,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:24,452 INFO L87 Difference]: Start difference. First operand 84116 states and 96147 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:27,549 INFO L93 Difference]: Finished difference Result 202776 states and 233283 transitions. [2024-11-08 11:19:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:27,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 519 [2024-11-08 11:19:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:27,719 INFO L225 Difference]: With dead ends: 202776 [2024-11-08 11:19:27,719 INFO L226 Difference]: Without dead ends: 119413 [2024-11-08 11:19:27,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:27,761 INFO L432 NwaCegarLoop]: 1252 mSDtfsCounter, 561 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:27,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1260 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 11:19:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2024-11-08 11:19:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 109650. [2024-11-08 11:19:29,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109650 states, 109649 states have (on average 1.124460779396073) internal successors, (123296), 109649 states have internal predecessors, (123296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109650 states to 109650 states and 123296 transitions. [2024-11-08 11:19:29,389 INFO L78 Accepts]: Start accepts. Automaton has 109650 states and 123296 transitions. Word has length 519 [2024-11-08 11:19:29,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:29,395 INFO L471 AbstractCegarLoop]: Abstraction has 109650 states and 123296 transitions. [2024-11-08 11:19:29,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 109650 states and 123296 transitions. [2024-11-08 11:19:29,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2024-11-08 11:19:29,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:29,418 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:29,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 11:19:29,418 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:29,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:29,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1413183668, now seen corresponding path program 1 times [2024-11-08 11:19:29,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:29,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137137812] [2024-11-08 11:19:29,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:29,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-08 11:19:29,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137137812] [2024-11-08 11:19:29,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137137812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:29,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:29,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:29,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313297326] [2024-11-08 11:19:29,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:29,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:29,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:29,767 INFO L87 Difference]: Start difference. First operand 109650 states and 123296 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 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) [2024-11-08 11:19:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:32,870 INFO L93 Difference]: Finished difference Result 238073 states and 267462 transitions. [2024-11-08 11:19:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:32,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 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 525 [2024-11-08 11:19:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:33,032 INFO L225 Difference]: With dead ends: 238073 [2024-11-08 11:19:33,032 INFO L226 Difference]: Without dead ends: 129176 [2024-11-08 11:19:33,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:33,068 INFO L432 NwaCegarLoop]: 1109 mSDtfsCounter, 840 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:33,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1117 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:19:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129176 states. [2024-11-08 11:19:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129176 to 128425. [2024-11-08 11:19:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128425 states, 128424 states have (on average 1.1099482962686102) internal successors, (142544), 128424 states have internal predecessors, (142544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128425 states to 128425 states and 142544 transitions. [2024-11-08 11:19:34,828 INFO L78 Accepts]: Start accepts. Automaton has 128425 states and 142544 transitions. Word has length 525 [2024-11-08 11:19:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:34,829 INFO L471 AbstractCegarLoop]: Abstraction has 128425 states and 142544 transitions. [2024-11-08 11:19:34,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 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) [2024-11-08 11:19:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 128425 states and 142544 transitions. [2024-11-08 11:19:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2024-11-08 11:19:34,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:34,853 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:34,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 11:19:34,854 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:34,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1335933603, now seen corresponding path program 1 times [2024-11-08 11:19:34,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:34,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426877972] [2024-11-08 11:19:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:34,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-08 11:19:35,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:35,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426877972] [2024-11-08 11:19:35,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426877972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:35,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:35,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:35,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065187050] [2024-11-08 11:19:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:35,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:35,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:35,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:35,686 INFO L87 Difference]: Start difference. First operand 128425 states and 142544 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:38,829 INFO L93 Difference]: Finished difference Result 259101 states and 287396 transitions. [2024-11-08 11:19:38,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:38,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 576 [2024-11-08 11:19:38,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:38,990 INFO L225 Difference]: With dead ends: 259101 [2024-11-08 11:19:38,990 INFO L226 Difference]: Without dead ends: 127674 [2024-11-08 11:19:39,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:39,057 INFO L432 NwaCegarLoop]: 1228 mSDtfsCounter, 606 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:39,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 1235 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:19:39,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127674 states. [2024-11-08 11:19:40,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127674 to 110401. [2024-11-08 11:19:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110401 states, 110400 states have (on average 1.07125) internal successors, (118266), 110400 states have internal predecessors, (118266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110401 states to 110401 states and 118266 transitions. [2024-11-08 11:19:40,897 INFO L78 Accepts]: Start accepts. Automaton has 110401 states and 118266 transitions. Word has length 576 [2024-11-08 11:19:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:40,898 INFO L471 AbstractCegarLoop]: Abstraction has 110401 states and 118266 transitions. [2024-11-08 11:19:40,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 110401 states and 118266 transitions. [2024-11-08 11:19:40,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2024-11-08 11:19:40,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:40,915 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:40,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 11:19:40,916 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:40,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash -605365794, now seen corresponding path program 1 times [2024-11-08 11:19:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:40,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574220442] [2024-11-08 11:19:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:40,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 657 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 11:19:41,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:41,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574220442] [2024-11-08 11:19:41,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574220442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:41,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:41,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:41,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740414108] [2024-11-08 11:19:41,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:41,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:41,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:41,272 INFO L87 Difference]: Start difference. First operand 110401 states and 118266 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:44,902 INFO L93 Difference]: Finished difference Result 248587 states and 266801 transitions. [2024-11-08 11:19:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:44,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 605 [2024-11-08 11:19:44,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:45,059 INFO L225 Difference]: With dead ends: 248587 [2024-11-08 11:19:45,059 INFO L226 Difference]: Without dead ends: 138939 [2024-11-08 11:19:45,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:45,082 INFO L432 NwaCegarLoop]: 1266 mSDtfsCounter, 667 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:45,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1273 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 11:19:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138939 states. [2024-11-08 11:19:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138939 to 127674. [2024-11-08 11:19:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127674 states, 127673 states have (on average 1.0658714058571508) internal successors, (136083), 127673 states have internal predecessors, (136083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127674 states to 127674 states and 136083 transitions. [2024-11-08 11:19:46,460 INFO L78 Accepts]: Start accepts. Automaton has 127674 states and 136083 transitions. Word has length 605 [2024-11-08 11:19:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:46,460 INFO L471 AbstractCegarLoop]: Abstraction has 127674 states and 136083 transitions. [2024-11-08 11:19:46,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 127674 states and 136083 transitions. [2024-11-08 11:19:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2024-11-08 11:19:46,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:46,478 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:46,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 11:19:46,478 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:46,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:46,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1824592865, now seen corresponding path program 1 times [2024-11-08 11:19:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:46,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304138866] [2024-11-08 11:19:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2024-11-08 11:19:47,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:47,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304138866] [2024-11-08 11:19:47,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304138866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:47,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:47,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:47,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956580085] [2024-11-08 11:19:47,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:47,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:47,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:47,976 INFO L87 Difference]: Start difference. First operand 127674 states and 136083 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)