./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem03_label01.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 92f387aee9179611b681311904b53986764751325111bb2d842a850437b442f7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:38:24,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:38:24,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:38:24,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:38:24,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:38:24,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:38:24,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:38:24,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:38:24,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:38:24,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:38:24,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:38:24,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:38:24,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:38:24,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:38:24,701 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:38:24,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:38:24,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:38:24,702 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:38:24,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:38:24,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:38:24,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:38:24,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:38:24,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:38:24,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:38:24,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:38:24,707 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:38:24,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:38:24,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:38:24,708 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:38:24,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:38:24,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:38:24,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:38:24,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:38:24,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:38:24,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:38:24,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:38:24,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:38:24,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:38:24,710 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:38:24,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:38:24,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:38:24,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:38:24,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92f387aee9179611b681311904b53986764751325111bb2d842a850437b442f7 [2024-11-09 18:38:24,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:38:24,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:38:24,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:38:24,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:38:24,991 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:38:24,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label01.c [2024-11-09 18:38:26,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:38:26,858 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:38:26,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label01.c [2024-11-09 18:38:26,882 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d930cde88/d45793f37c904fa396602c1ae138a153/FLAGf8c0ededa [2024-11-09 18:38:26,900 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d930cde88/d45793f37c904fa396602c1ae138a153 [2024-11-09 18:38:26,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:38:26,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:38:26,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:38:26,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:38:26,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:38:26,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:38:26" (1/1) ... [2024-11-09 18:38:26,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6b9311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:26, skipping insertion in model container [2024-11-09 18:38:26,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:38:26" (1/1) ... [2024-11-09 18:38:26,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:38:27,527 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/Problem03_label01.c[59340,59353] [2024-11-09 18:38:27,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:38:27,578 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:38:27,756 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/Problem03_label01.c[59340,59353] [2024-11-09 18:38:27,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:38:27,792 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:38:27,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27 WrapperNode [2024-11-09 18:38:27,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:38:27,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:38:27,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:38:27,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:38:27,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:27,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,034 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-09 18:38:28,034 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:38:28,035 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:38:28,035 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:38:28,035 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:38:28,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,096 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 18:38:28,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,152 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:38:28,186 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:38:28,186 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:38:28,187 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:38:28,188 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (1/1) ... [2024-11-09 18:38:28,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:38:28,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:38:28,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 18:38:28,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 18:38:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:38:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:38:28,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:38:28,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:38:28,357 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:38:28,358 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:38:30,531 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-09 18:38:30,531 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:38:30,561 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:38:30,561 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:38:30,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:38:30 BoogieIcfgContainer [2024-11-09 18:38:30,563 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:38:30,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:38:30,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:38:30,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:38:30,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:38:26" (1/3) ... [2024-11-09 18:38:30,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce4ab55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:38:30, skipping insertion in model container [2024-11-09 18:38:30,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:38:27" (2/3) ... [2024-11-09 18:38:30,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce4ab55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:38:30, skipping insertion in model container [2024-11-09 18:38:30,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:38:30" (3/3) ... [2024-11-09 18:38:30,574 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label01.c [2024-11-09 18:38:30,591 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:38:30,592 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:38:30,671 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:38:30,678 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;@65fa43ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:38:30,678 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:38:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-09 18:38:30,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:30,702 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:30,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:30,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash -383178313, now seen corresponding path program 1 times [2024-11-09 18:38:30,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:30,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034930369] [2024-11-09 18:38:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:30,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:31,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:31,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034930369] [2024-11-09 18:38:31,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034930369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:31,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:31,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:31,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924044468] [2024-11-09 18:38:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:31,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:31,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:31,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:31,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:31,730 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 0 states have call successors, (0), 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 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:32,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:32,901 INFO L93 Difference]: Finished difference Result 866 states and 1513 transitions. [2024-11-09 18:38:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:32,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2024-11-09 18:38:32,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:32,927 INFO L225 Difference]: With dead ends: 866 [2024-11-09 18:38:32,928 INFO L226 Difference]: Without dead ends: 468 [2024-11-09 18:38:32,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:32,935 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 118 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:32,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 174 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 18:38:32,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-09 18:38:33,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 462. [2024-11-09 18:38:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.5531453362255965) internal successors, (716), 461 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 716 transitions. [2024-11-09 18:38:33,009 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 716 transitions. Word has length 188 [2024-11-09 18:38:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:33,010 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 716 transitions. [2024-11-09 18:38:33,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:33,011 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 716 transitions. [2024-11-09 18:38:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-09 18:38:33,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:33,015 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:33,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:38:33,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:33,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:33,017 INFO L85 PathProgramCache]: Analyzing trace with hash 351755197, now seen corresponding path program 1 times [2024-11-09 18:38:33,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:33,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33987742] [2024-11-09 18:38:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:33,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:33,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:33,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33987742] [2024-11-09 18:38:33,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33987742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:33,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:33,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:33,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397483025] [2024-11-09 18:38:33,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:33,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:33,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:33,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:33,291 INFO L87 Difference]: Start difference. First operand 462 states and 716 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:34,115 INFO L93 Difference]: Finished difference Result 1351 states and 2110 transitions. [2024-11-09 18:38:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:34,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2024-11-09 18:38:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:34,121 INFO L225 Difference]: With dead ends: 1351 [2024-11-09 18:38:34,122 INFO L226 Difference]: Without dead ends: 891 [2024-11-09 18:38:34,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:34,125 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 247 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:34,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 96 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:38:34,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-09 18:38:34,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 873. [2024-11-09 18:38:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5298165137614679) internal successors, (1334), 872 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1334 transitions. [2024-11-09 18:38:34,175 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1334 transitions. Word has length 197 [2024-11-09 18:38:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:34,175 INFO L471 AbstractCegarLoop]: Abstraction has 873 states and 1334 transitions. [2024-11-09 18:38:34,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1334 transitions. [2024-11-09 18:38:34,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-09 18:38:34,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:34,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:34,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:38:34,184 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:34,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2131792869, now seen corresponding path program 1 times [2024-11-09 18:38:34,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:34,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875127025] [2024-11-09 18:38:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:34,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:34,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875127025] [2024-11-09 18:38:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875127025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:34,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:34,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:34,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024602977] [2024-11-09 18:38:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:34,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:34,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:34,436 INFO L87 Difference]: Start difference. First operand 873 states and 1334 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:34,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:34,868 INFO L93 Difference]: Finished difference Result 1720 states and 2632 transitions. [2024-11-09 18:38:34,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:34,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2024-11-09 18:38:34,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:34,872 INFO L225 Difference]: With dead ends: 1720 [2024-11-09 18:38:34,872 INFO L226 Difference]: Without dead ends: 849 [2024-11-09 18:38:34,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:34,877 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 330 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:34,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 33 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 18:38:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-09 18:38:34,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-11-09 18:38:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 1.474056603773585) internal successors, (1250), 848 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1250 transitions. [2024-11-09 18:38:34,903 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1250 transitions. Word has length 202 [2024-11-09 18:38:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:34,903 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1250 transitions. [2024-11-09 18:38:34,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1250 transitions. [2024-11-09 18:38:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-09 18:38:34,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:34,907 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:34,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:38:34,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:34,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash 669842013, now seen corresponding path program 1 times [2024-11-09 18:38:34,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:34,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641377116] [2024-11-09 18:38:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:34,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:38:35,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:35,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641377116] [2024-11-09 18:38:35,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641377116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:35,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:35,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089578601] [2024-11-09 18:38:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:35,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:35,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:35,194 INFO L87 Difference]: Start difference. First operand 849 states and 1250 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:35,958 INFO L93 Difference]: Finished difference Result 2512 states and 3704 transitions. [2024-11-09 18:38:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:35,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 204 [2024-11-09 18:38:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:35,965 INFO L225 Difference]: With dead ends: 2512 [2024-11-09 18:38:35,965 INFO L226 Difference]: Without dead ends: 1665 [2024-11-09 18:38:35,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:35,968 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 207 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:35,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 148 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:38:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2024-11-09 18:38:35,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1665. [2024-11-09 18:38:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.3046875) internal successors, (2171), 1664 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2171 transitions. [2024-11-09 18:38:36,002 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2171 transitions. Word has length 204 [2024-11-09 18:38:36,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:36,003 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2171 transitions. [2024-11-09 18:38:36,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2171 transitions. [2024-11-09 18:38:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-09 18:38:36,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:36,008 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:36,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:38:36,008 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:36,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1008908478, now seen corresponding path program 1 times [2024-11-09 18:38:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:36,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843865768] [2024-11-09 18:38:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:36,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:38:36,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843865768] [2024-11-09 18:38:36,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843865768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:38:36,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117153058] [2024-11-09 18:38:36,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:36,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:38:36,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:38:36,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:38:36,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 18:38:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:36,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:38:36,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:38:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:38:36,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:38:36,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117153058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:36,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:38:36,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 18:38:36,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232567836] [2024-11-09 18:38:36,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:36,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:36,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:36,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:36,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:38:36,588 INFO L87 Difference]: Start difference. First operand 1665 states and 2171 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:36,855 INFO L93 Difference]: Finished difference Result 4988 states and 6506 transitions. [2024-11-09 18:38:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:36,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 211 [2024-11-09 18:38:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:36,868 INFO L225 Difference]: With dead ends: 4988 [2024-11-09 18:38:36,868 INFO L226 Difference]: Without dead ends: 3325 [2024-11-09 18:38:36,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:38:36,872 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 322 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:36,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 543 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:38:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2024-11-09 18:38:36,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3320. [2024-11-09 18:38:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 1.3043085266646581) internal successors, (4329), 3319 states have internal predecessors, (4329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 4329 transitions. [2024-11-09 18:38:36,944 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 4329 transitions. Word has length 211 [2024-11-09 18:38:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:36,944 INFO L471 AbstractCegarLoop]: Abstraction has 3320 states and 4329 transitions. [2024-11-09 18:38:36,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 4329 transitions. [2024-11-09 18:38:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-09 18:38:36,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:36,952 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:36,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 18:38:37,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:38:37,158 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:37,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:37,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1170824645, now seen corresponding path program 1 times [2024-11-09 18:38:37,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:37,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169716313] [2024-11-09 18:38:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:37,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:38:37,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:37,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169716313] [2024-11-09 18:38:37,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169716313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:37,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:37,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:38:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5868239] [2024-11-09 18:38:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:37,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:37,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:37,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:37,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:37,388 INFO L87 Difference]: Start difference. First operand 3320 states and 4329 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:38,210 INFO L93 Difference]: Finished difference Result 9914 states and 12924 transitions. [2024-11-09 18:38:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:38,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 220 [2024-11-09 18:38:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:38,238 INFO L225 Difference]: With dead ends: 9914 [2024-11-09 18:38:38,239 INFO L226 Difference]: Without dead ends: 6596 [2024-11-09 18:38:38,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:38,246 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 246 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:38,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 332 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:38:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6596 states. [2024-11-09 18:38:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6596 to 6593. [2024-11-09 18:38:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6593 states, 6592 states have (on average 1.2296723300970873) internal successors, (8106), 6592 states have internal predecessors, (8106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6593 states to 6593 states and 8106 transitions. [2024-11-09 18:38:38,394 INFO L78 Accepts]: Start accepts. Automaton has 6593 states and 8106 transitions. Word has length 220 [2024-11-09 18:38:38,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:38,396 INFO L471 AbstractCegarLoop]: Abstraction has 6593 states and 8106 transitions. [2024-11-09 18:38:38,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6593 states and 8106 transitions. [2024-11-09 18:38:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-09 18:38:38,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:38,409 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:38,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:38:38,410 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:38,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash 726298744, now seen corresponding path program 1 times [2024-11-09 18:38:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885336778] [2024-11-09 18:38:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 18:38:38,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:38,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885336778] [2024-11-09 18:38:38,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885336778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:38,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:38,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:38:38,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825458413] [2024-11-09 18:38:38,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:38,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:38:38,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:38,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:38:38,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:38:38,797 INFO L87 Difference]: Start difference. First operand 6593 states and 8106 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:40,288 INFO L93 Difference]: Finished difference Result 26342 states and 32390 transitions. [2024-11-09 18:38:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:38:40,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 224 [2024-11-09 18:38:40,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:40,365 INFO L225 Difference]: With dead ends: 26342 [2024-11-09 18:38:40,365 INFO L226 Difference]: Without dead ends: 19751 [2024-11-09 18:38:40,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:38:40,376 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 892 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:40,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 72 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 18:38:40,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19751 states. [2024-11-09 18:38:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19751 to 19739. [2024-11-09 18:38:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19739 states, 19738 states have (on average 1.224642820954504) internal successors, (24172), 19738 states have internal predecessors, (24172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19739 states to 19739 states and 24172 transitions. [2024-11-09 18:38:40,776 INFO L78 Accepts]: Start accepts. Automaton has 19739 states and 24172 transitions. Word has length 224 [2024-11-09 18:38:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:40,776 INFO L471 AbstractCegarLoop]: Abstraction has 19739 states and 24172 transitions. [2024-11-09 18:38:40,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 19739 states and 24172 transitions. [2024-11-09 18:38:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-09 18:38:40,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:40,797 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:40,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 18:38:40,797 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:40,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:40,798 INFO L85 PathProgramCache]: Analyzing trace with hash 426612255, now seen corresponding path program 1 times [2024-11-09 18:38:40,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:40,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921796666] [2024-11-09 18:38:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:40,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:42,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:42,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921796666] [2024-11-09 18:38:42,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921796666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:38:42,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339470694] [2024-11-09 18:38:42,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:42,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:38:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:38:42,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:38:42,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 18:38:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:42,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:38:42,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:38:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:38:42,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:38:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:38:42,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339470694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:38:42,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:38:42,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-09 18:38:42,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870406090] [2024-11-09 18:38:42,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:38:42,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:38:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:38:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:38:42,912 INFO L87 Difference]: Start difference. First operand 19739 states and 24172 transitions. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:45,174 INFO L93 Difference]: Finished difference Result 64144 states and 78912 transitions. [2024-11-09 18:38:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 18:38:45,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 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 228 [2024-11-09 18:38:45,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:45,254 INFO L225 Difference]: With dead ends: 64144 [2024-11-09 18:38:45,255 INFO L226 Difference]: Without dead ends: 44407 [2024-11-09 18:38:45,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 18:38:45,282 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 1605 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:45,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 169 Invalid, 2651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 18:38:45,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44407 states. [2024-11-09 18:38:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44407 to 40049. [2024-11-09 18:38:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40049 states, 40048 states have (on average 1.2207101478226128) internal successors, (48887), 40048 states have internal predecessors, (48887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40049 states to 40049 states and 48887 transitions. [2024-11-09 18:38:45,994 INFO L78 Accepts]: Start accepts. Automaton has 40049 states and 48887 transitions. Word has length 228 [2024-11-09 18:38:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:45,994 INFO L471 AbstractCegarLoop]: Abstraction has 40049 states and 48887 transitions. [2024-11-09 18:38:45,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 40049 states and 48887 transitions. [2024-11-09 18:38:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-09 18:38:46,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:46,017 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:46,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:38:46,221 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 [2024-11-09 18:38:46,222 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:46,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash 924688928, now seen corresponding path program 1 times [2024-11-09 18:38:46,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:46,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174404418] [2024-11-09 18:38:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:46,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 18:38:46,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:46,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174404418] [2024-11-09 18:38:46,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174404418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:46,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:46,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:38:46,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540787856] [2024-11-09 18:38:46,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:46,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:38:46,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:46,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:38:46,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:38:46,626 INFO L87 Difference]: Start difference. First operand 40049 states and 48887 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:47,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:47,610 INFO L93 Difference]: Finished difference Result 79481 states and 97106 transitions. [2024-11-09 18:38:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:38:47,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 231 [2024-11-09 18:38:47,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:47,676 INFO L225 Difference]: With dead ends: 79481 [2024-11-09 18:38:47,676 INFO L226 Difference]: Without dead ends: 40046 [2024-11-09 18:38:47,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:38:47,721 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 624 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:47,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 59 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:38:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40046 states. [2024-11-09 18:38:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40046 to 40046. [2024-11-09 18:38:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40046 states, 40045 states have (on average 1.2135347733799475) internal successors, (48596), 40045 states have internal predecessors, (48596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40046 states to 40046 states and 48596 transitions. [2024-11-09 18:38:48,349 INFO L78 Accepts]: Start accepts. Automaton has 40046 states and 48596 transitions. Word has length 231 [2024-11-09 18:38:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:48,349 INFO L471 AbstractCegarLoop]: Abstraction has 40046 states and 48596 transitions. [2024-11-09 18:38:48,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 40046 states and 48596 transitions. [2024-11-09 18:38:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-09 18:38:48,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:48,370 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:48,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 18:38:48,371 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:48,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:48,371 INFO L85 PathProgramCache]: Analyzing trace with hash 878195386, now seen corresponding path program 1 times [2024-11-09 18:38:48,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:48,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255475100] [2024-11-09 18:38:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:48,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:38:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255475100] [2024-11-09 18:38:48,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255475100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:48,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:38:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628894229] [2024-11-09 18:38:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:48,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:48,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:48,681 INFO L87 Difference]: Start difference. First operand 40046 states and 48596 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:49,581 INFO L93 Difference]: Finished difference Result 98264 states and 121697 transitions. [2024-11-09 18:38:49,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:49,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 232 [2024-11-09 18:38:49,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:49,664 INFO L225 Difference]: With dead ends: 98264 [2024-11-09 18:38:49,664 INFO L226 Difference]: Without dead ends: 58832 [2024-11-09 18:38:49,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:49,708 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 194 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:49,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 368 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:38:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58832 states. [2024-11-09 18:38:50,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58832 to 57590. [2024-11-09 18:38:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57590 states, 57589 states have (on average 1.1731059750994113) internal successors, (67558), 57589 states have internal predecessors, (67558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57590 states to 57590 states and 67558 transitions. [2024-11-09 18:38:51,025 INFO L78 Accepts]: Start accepts. Automaton has 57590 states and 67558 transitions. Word has length 232 [2024-11-09 18:38:51,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:51,025 INFO L471 AbstractCegarLoop]: Abstraction has 57590 states and 67558 transitions. [2024-11-09 18:38:51,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 57590 states and 67558 transitions. [2024-11-09 18:38:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-09 18:38:51,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:51,039 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:38:51,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 18:38:51,040 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:51,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash -26696288, now seen corresponding path program 1 times [2024-11-09 18:38:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949721418] [2024-11-09 18:38:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:51,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:38:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:51,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949721418] [2024-11-09 18:38:51,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949721418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:51,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:51,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:51,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380381518] [2024-11-09 18:38:51,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:51,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:51,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:51,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:51,401 INFO L87 Difference]: Start difference. First operand 57590 states and 67558 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:52,669 INFO L93 Difference]: Finished difference Result 164004 states and 192303 transitions. [2024-11-09 18:38:52,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 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 267 [2024-11-09 18:38:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:52,807 INFO L225 Difference]: With dead ends: 164004 [2024-11-09 18:38:52,807 INFO L226 Difference]: Without dead ends: 107028 [2024-11-09 18:38:52,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:52,841 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 163 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:52,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 170 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:38:52,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107028 states. [2024-11-09 18:38:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107028 to 106194. [2024-11-09 18:38:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106194 states, 106193 states have (on average 1.1534658593315943) internal successors, (122490), 106193 states have internal predecessors, (122490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106194 states to 106194 states and 122490 transitions. [2024-11-09 18:38:54,487 INFO L78 Accepts]: Start accepts. Automaton has 106194 states and 122490 transitions. Word has length 267 [2024-11-09 18:38:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:54,488 INFO L471 AbstractCegarLoop]: Abstraction has 106194 states and 122490 transitions. [2024-11-09 18:38:54,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 106194 states and 122490 transitions. [2024-11-09 18:38:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-09 18:38:54,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:54,779 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-09 18:38:54,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 18:38:54,779 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:54,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:54,779 INFO L85 PathProgramCache]: Analyzing trace with hash -353482982, now seen corresponding path program 1 times [2024-11-09 18:38:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:54,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575973505] [2024-11-09 18:38:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:38:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 18:38:55,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:38:55,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575973505] [2024-11-09 18:38:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575973505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:38:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:38:55,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:38:55,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789898135] [2024-11-09 18:38:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:38:55,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:38:55,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:38:55,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:38:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:55,178 INFO L87 Difference]: Start difference. First operand 106194 states and 122490 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:38:56,688 INFO L93 Difference]: Finished difference Result 266180 states and 306511 transitions. [2024-11-09 18:38:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:38:56,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2024-11-09 18:38:56,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:38:56,916 INFO L225 Difference]: With dead ends: 266180 [2024-11-09 18:38:56,916 INFO L226 Difference]: Without dead ends: 161212 [2024-11-09 18:38:56,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:38:56,983 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 205 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:38:56,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 97 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:38:57,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161212 states. [2024-11-09 18:38:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161212 to 161200. [2024-11-09 18:38:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161200 states, 161199 states have (on average 1.1477614625400903) internal successors, (185018), 161199 states have internal predecessors, (185018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161200 states to 161200 states and 185018 transitions. [2024-11-09 18:38:59,859 INFO L78 Accepts]: Start accepts. Automaton has 161200 states and 185018 transitions. Word has length 303 [2024-11-09 18:38:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:38:59,859 INFO L471 AbstractCegarLoop]: Abstraction has 161200 states and 185018 transitions. [2024-11-09 18:38:59,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:38:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 161200 states and 185018 transitions. [2024-11-09 18:38:59,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-09 18:38:59,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:38:59,894 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:38:59,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 18:38:59,894 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:38:59,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:38:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1612306599, now seen corresponding path program 1 times [2024-11-09 18:38:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:38:59,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980566300] [2024-11-09 18:38:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:38:59,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:38:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 90 proven. 7 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-09 18:39:00,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980566300] [2024-11-09 18:39:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980566300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:39:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315964889] [2024-11-09 18:39:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:00,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:39:00,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:39:00,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:39:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:01,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:39:01,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:39:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 18:39:01,488 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:39:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315964889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:01,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:39:01,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:39:01,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410934460] [2024-11-09 18:39:01,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:01,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:01,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:01,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:01,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:39:01,491 INFO L87 Difference]: Start difference. First operand 161200 states and 185018 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:03,327 INFO L93 Difference]: Finished difference Result 322191 states and 369812 transitions. [2024-11-09 18:39:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:03,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2024-11-09 18:39:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:03,603 INFO L225 Difference]: With dead ends: 322191 [2024-11-09 18:39:03,603 INFO L226 Difference]: Without dead ends: 160993 [2024-11-09 18:39:03,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:39:03,675 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 65 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:03,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 102 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:39:03,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160993 states. [2024-11-09 18:39:05,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160993 to 160993. [2024-11-09 18:39:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160993 states, 160992 states have (on average 1.1264969687934805) internal successors, (181357), 160992 states have internal predecessors, (181357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160993 states to 160993 states and 181357 transitions. [2024-11-09 18:39:06,230 INFO L78 Accepts]: Start accepts. Automaton has 160993 states and 181357 transitions. Word has length 311 [2024-11-09 18:39:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:06,231 INFO L471 AbstractCegarLoop]: Abstraction has 160993 states and 181357 transitions. [2024-11-09 18:39:06,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 160993 states and 181357 transitions. [2024-11-09 18:39:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-09 18:39:06,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:06,284 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:39:06,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:39:06,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:39:06,486 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:06,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash 349524280, now seen corresponding path program 1 times [2024-11-09 18:39:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:06,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357693048] [2024-11-09 18:39:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 18:39:07,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357693048] [2024-11-09 18:39:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357693048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:07,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:07,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:07,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230323555] [2024-11-09 18:39:07,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:07,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:07,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:07,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:07,512 INFO L87 Difference]: Start difference. First operand 160993 states and 181357 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:10,228 INFO L93 Difference]: Finished difference Result 410844 states and 463431 transitions. [2024-11-09 18:39:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:10,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 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 359 [2024-11-09 18:39:10,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:10,803 INFO L225 Difference]: With dead ends: 410844 [2024-11-09 18:39:10,803 INFO L226 Difference]: Without dead ends: 249853 [2024-11-09 18:39:10,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:10,866 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 227 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:10,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 332 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:39:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249853 states. [2024-11-09 18:39:14,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249853 to 249733. [2024-11-09 18:39:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249733 states, 249732 states have (on average 1.115055339323755) internal successors, (278465), 249732 states have internal predecessors, (278465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249733 states to 249733 states and 278465 transitions. [2024-11-09 18:39:15,532 INFO L78 Accepts]: Start accepts. Automaton has 249733 states and 278465 transitions. Word has length 359 [2024-11-09 18:39:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:15,533 INFO L471 AbstractCegarLoop]: Abstraction has 249733 states and 278465 transitions. [2024-11-09 18:39:15,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:15,533 INFO L276 IsEmpty]: Start isEmpty. Operand 249733 states and 278465 transitions. [2024-11-09 18:39:15,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-09 18:39:15,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:15,613 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:15,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 18:39:15,613 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:15,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1556101542, now seen corresponding path program 1 times [2024-11-09 18:39:15,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:15,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632368118] [2024-11-09 18:39:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:15,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-09 18:39:15,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:15,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632368118] [2024-11-09 18:39:15,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632368118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:15,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:15,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:15,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805554210] [2024-11-09 18:39:15,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:15,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:15,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:15,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:15,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:15,982 INFO L87 Difference]: Start difference. First operand 249733 states and 278465 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:18,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:18,569 INFO L93 Difference]: Finished difference Result 485168 states and 540678 transitions. [2024-11-09 18:39:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:18,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 381 [2024-11-09 18:39:18,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:18,981 INFO L225 Difference]: With dead ends: 485168 [2024-11-09 18:39:18,982 INFO L226 Difference]: Without dead ends: 235437 [2024-11-09 18:39:19,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:19,155 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 226 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:19,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 305 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:39:19,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235437 states. [2024-11-09 18:39:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235437 to 220713. [2024-11-09 18:39:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220713 states, 220712 states have (on average 1.093678640037696) internal successors, (241388), 220712 states have internal predecessors, (241388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220713 states to 220713 states and 241388 transitions. [2024-11-09 18:39:23,831 INFO L78 Accepts]: Start accepts. Automaton has 220713 states and 241388 transitions. Word has length 381 [2024-11-09 18:39:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:23,832 INFO L471 AbstractCegarLoop]: Abstraction has 220713 states and 241388 transitions. [2024-11-09 18:39:23,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 220713 states and 241388 transitions. [2024-11-09 18:39:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-09 18:39:23,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:23,909 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:39:23,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 18:39:23,909 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:23,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1416807560, now seen corresponding path program 1 times [2024-11-09 18:39:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:23,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368945022] [2024-11-09 18:39:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-09 18:39:25,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:25,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368945022] [2024-11-09 18:39:25,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368945022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:25,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:25,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:25,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927610174] [2024-11-09 18:39:25,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:25,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:25,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:25,239 INFO L87 Difference]: Start difference. First operand 220713 states and 241388 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:27,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:39:27,759 INFO L93 Difference]: Finished difference Result 462121 states and 505106 transitions. [2024-11-09 18:39:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:39:27,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 394 [2024-11-09 18:39:27,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:39:28,184 INFO L225 Difference]: With dead ends: 462121 [2024-11-09 18:39:28,184 INFO L226 Difference]: Without dead ends: 242430 [2024-11-09 18:39:28,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:28,266 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 187 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:39:28,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 332 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:39:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242430 states. [2024-11-09 18:39:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242430 to 235806. [2024-11-09 18:39:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235806 states, 235805 states have (on average 1.0884629248743665) internal successors, (256665), 235805 states have internal predecessors, (256665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235806 states to 235806 states and 256665 transitions. [2024-11-09 18:39:33,176 INFO L78 Accepts]: Start accepts. Automaton has 235806 states and 256665 transitions. Word has length 394 [2024-11-09 18:39:33,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:39:33,177 INFO L471 AbstractCegarLoop]: Abstraction has 235806 states and 256665 transitions. [2024-11-09 18:39:33,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:39:33,177 INFO L276 IsEmpty]: Start isEmpty. Operand 235806 states and 256665 transitions. [2024-11-09 18:39:33,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-09 18:39:33,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:39:33,230 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:39:33,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 18:39:33,230 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:39:33,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:39:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1037909838, now seen corresponding path program 1 times [2024-11-09 18:39:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:39:33,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001388187] [2024-11-09 18:39:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:39:33,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:39:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:39:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-09 18:39:33,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:39:33,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001388187] [2024-11-09 18:39:33,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001388187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:39:33,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:39:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:39:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339565007] [2024-11-09 18:39:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:39:33,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:39:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:39:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:39:33,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:39:33,493 INFO L87 Difference]: Start difference. First operand 235806 states and 256665 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)