./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.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 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:22:45,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:22:45,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:22:45,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:22:45,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:22:45,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:22:45,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:22:45,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:22:45,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:22:45,957 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:22:45,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:22:45,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:22:45,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:22:45,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:22:45,960 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:22:45,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:22:45,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:22:45,960 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:22:45,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:22:45,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:22:45,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:22:45,961 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:22:45,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:22:45,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:22:45,964 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:22:45,964 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:22:45,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:22:45,965 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:22:45,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:22:45,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:22:45,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:22:45,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:22:45,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:22:45,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:22:45,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:22:45,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:22:45,966 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:22:45,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:22:45,966 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:22:45,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:22:45,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:22:45,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:22:45,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2024-11-08 10:22:46,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:22:46,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:22:46,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:22:46,179 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:22:46,180 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:22:46,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2024-11-08 10:22:47,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:22:47,794 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:22:47,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2024-11-08 10:22:47,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ae344de/21a9a66801414e9b927d5637989e580f/FLAG1a635a3bb [2024-11-08 10:22:47,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ae344de/21a9a66801414e9b927d5637989e580f [2024-11-08 10:22:47,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:22:47,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:22:47,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:22:47,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:22:47,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:22:47,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:22:47" (1/1) ... [2024-11-08 10:22:47,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aaa161e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:47, skipping insertion in model container [2024-11-08 10:22:47,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:22:47" (1/1) ... [2024-11-08 10:22:47,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:22:48,021 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/bitvector/soft_float_3a.c.cil.c[728,741] [2024-11-08 10:22:48,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:22:48,088 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:22:48,097 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/bitvector/soft_float_3a.c.cil.c[728,741] [2024-11-08 10:22:48,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:22:48,162 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:22:48,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48 WrapperNode [2024-11-08 10:22:48,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:22:48,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:22:48,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:22:48,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:22:48,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,207 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 147 [2024-11-08 10:22:48,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:22:48,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:22:48,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:22:48,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:22:48,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,253 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 10:22:48,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,261 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:22:48,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:22:48,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:22:48,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:22:48,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (1/1) ... [2024-11-08 10:22:48,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:22:48,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:48,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 10:22:48,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 10:22:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:22:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:22:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-08 10:22:48,407 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-08 10:22:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:22:48,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:22:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 10:22:48,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 10:22:48,486 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:22:48,488 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:22:48,799 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-11-08 10:22:48,800 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:22:48,813 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:22:48,813 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 10:22:48,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:22:48 BoogieIcfgContainer [2024-11-08 10:22:48,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:22:48,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:22:48,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:22:48,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:22:48,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:22:47" (1/3) ... [2024-11-08 10:22:48,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7369d8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:22:48, skipping insertion in model container [2024-11-08 10:22:48,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:22:48" (2/3) ... [2024-11-08 10:22:48,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7369d8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:22:48, skipping insertion in model container [2024-11-08 10:22:48,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:22:48" (3/3) ... [2024-11-08 10:22:48,823 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2024-11-08 10:22:48,835 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:22:48,835 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:22:48,887 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:22:48,892 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;@4f1012fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:22:48,893 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:22:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 67 states have internal predecessors, (101), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 10:22:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 10:22:48,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:48,904 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:48,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:48,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:48,909 INFO L85 PathProgramCache]: Analyzing trace with hash 464012710, now seen corresponding path program 1 times [2024-11-08 10:22:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114389810] [2024-11-08 10:22:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 10:22:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:22:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 10:22:49,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:49,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114389810] [2024-11-08 10:22:49,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114389810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:49,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:22:49,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 10:22:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228243522] [2024-11-08 10:22:49,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:49,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:22:49,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:22:49,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:22:49,272 INFO L87 Difference]: Start difference. First operand has 74 states, 65 states have (on average 1.5538461538461539) internal successors, (101), 67 states have internal predecessors, (101), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:49,336 INFO L93 Difference]: Finished difference Result 146 states and 225 transitions. [2024-11-08 10:22:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:22:49,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-11-08 10:22:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:49,351 INFO L225 Difference]: With dead ends: 146 [2024-11-08 10:22:49,356 INFO L226 Difference]: Without dead ends: 68 [2024-11-08 10:22:49,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:22:49,366 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:49,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-08 10:22:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-08 10:22:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 10:22:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 96 transitions. [2024-11-08 10:22:49,478 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 96 transitions. Word has length 41 [2024-11-08 10:22:49,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:49,480 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 96 transitions. [2024-11-08 10:22:49,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 96 transitions. [2024-11-08 10:22:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 10:22:49,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:49,482 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:49,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:22:49,482 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:49,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:49,483 INFO L85 PathProgramCache]: Analyzing trace with hash 48639148, now seen corresponding path program 1 times [2024-11-08 10:22:49,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:49,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98960826] [2024-11-08 10:22:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 10:22:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:22:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 10:22:49,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:49,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98960826] [2024-11-08 10:22:49,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98960826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:49,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:22:49,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 10:22:49,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568820226] [2024-11-08 10:22:49,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:49,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:22:49,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:49,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:22:49,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:22:49,589 INFO L87 Difference]: Start difference. First operand 68 states and 96 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:49,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:49,603 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2024-11-08 10:22:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:22:49,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2024-11-08 10:22:49,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:49,605 INFO L225 Difference]: With dead ends: 78 [2024-11-08 10:22:49,605 INFO L226 Difference]: Without dead ends: 68 [2024-11-08 10:22:49,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 10:22:49,607 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:49,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-08 10:22:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-08 10:22:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 61 states have internal predecessors, (86), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 10:22:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2024-11-08 10:22:49,619 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 43 [2024-11-08 10:22:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:49,624 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2024-11-08 10:22:49,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2024-11-08 10:22:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 10:22:49,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:49,625 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:49,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 10:22:49,625 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:49,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash -760707478, now seen corresponding path program 1 times [2024-11-08 10:22:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:49,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211412369] [2024-11-08 10:22:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 10:22:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:22:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:49,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:49,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211412369] [2024-11-08 10:22:49,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211412369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:49,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478074413] [2024-11-08 10:22:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:49,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:49,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:49,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:49,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:22:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:49,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 10:22:49,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:22:49,850 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:22:49,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478074413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:49,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:22:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 10:22:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091359790] [2024-11-08 10:22:49,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:49,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:22:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:49,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:22:49,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:22:49,856 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:49,959 INFO L93 Difference]: Finished difference Result 154 states and 220 transitions. [2024-11-08 10:22:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 10:22:49,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-08 10:22:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:49,962 INFO L225 Difference]: With dead ends: 154 [2024-11-08 10:22:49,962 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 10:22:49,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 10:22:49,965 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 21 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:49,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 219 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:22:49,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 10:22:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2024-11-08 10:22:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 73 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-08 10:22:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 113 transitions. [2024-11-08 10:22:49,979 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 113 transitions. Word has length 43 [2024-11-08 10:22:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:49,980 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 113 transitions. [2024-11-08 10:22:49,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 113 transitions. [2024-11-08 10:22:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 10:22:49,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:49,981 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:49,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:22:50,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:50,188 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:50,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash 753932532, now seen corresponding path program 1 times [2024-11-08 10:22:50,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:50,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940164355] [2024-11-08 10:22:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:50,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 10:22:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 10:22:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:50,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940164355] [2024-11-08 10:22:50,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940164355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503528472] [2024-11-08 10:22:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:50,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:50,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:50,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:22:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:22:50,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:22:50,396 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:22:50,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503528472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:50,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:22:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 10:22:50,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228497107] [2024-11-08 10:22:50,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:50,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:22:50,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:50,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:22:50,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:22:50,398 INFO L87 Difference]: Start difference. First operand 81 states and 113 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:50,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:50,445 INFO L93 Difference]: Finished difference Result 170 states and 240 transitions. [2024-11-08 10:22:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:22:50,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2024-11-08 10:22:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:50,447 INFO L225 Difference]: With dead ends: 170 [2024-11-08 10:22:50,447 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 10:22:50,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:22:50,448 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 15 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:50,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 235 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:50,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 10:22:50,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2024-11-08 10:22:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 78 states have internal predecessors, (107), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 10:22:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2024-11-08 10:22:50,455 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 46 [2024-11-08 10:22:50,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:50,455 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2024-11-08 10:22:50,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2024-11-08 10:22:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 10:22:50,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:50,457 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:50,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 10:22:50,657 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,SelfDestructingSolverStorable3 [2024-11-08 10:22:50,658 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:50,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash -518829479, now seen corresponding path program 1 times [2024-11-08 10:22:50,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:50,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116824231] [2024-11-08 10:22:50,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 10:22:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 10:22:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:50,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116824231] [2024-11-08 10:22:50,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116824231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612232274] [2024-11-08 10:22:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:50,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:50,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:50,805 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) [2024-11-08 10:22:50,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:22:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:50,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:22:50,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:22:50,971 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:22:50,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612232274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:50,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:22:50,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 10:22:50,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275214988] [2024-11-08 10:22:50,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:50,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:22:50,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:50,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:22:50,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:22:50,973 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:51,030 INFO L93 Difference]: Finished difference Result 176 states and 249 transitions. [2024-11-08 10:22:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:22:51,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-08 10:22:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:51,032 INFO L225 Difference]: With dead ends: 176 [2024-11-08 10:22:51,032 INFO L226 Difference]: Without dead ends: 97 [2024-11-08 10:22:51,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:22:51,033 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 16 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:51,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 237 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:22:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-08 10:22:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2024-11-08 10:22:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 79 states have internal predecessors, (109), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 10:22:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2024-11-08 10:22:51,049 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 47 [2024-11-08 10:22:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:51,049 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2024-11-08 10:22:51,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2024-11-08 10:22:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 10:22:51,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:51,057 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-08 10:22:51,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 10:22:51,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:51,258 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:51,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1747045464, now seen corresponding path program 1 times [2024-11-08 10:22:51,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:51,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169695165] [2024-11-08 10:22:51,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:51,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 10:22:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 10:22:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:51,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:51,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169695165] [2024-11-08 10:22:51,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169695165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288922629] [2024-11-08 10:22:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:51,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:51,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:51,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:51,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:22:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:22:51,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:22:51,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:22:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:51,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288922629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:22:51,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:22:51,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 10:22:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618923767] [2024-11-08 10:22:51,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:22:51,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:22:51,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:22:51,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:22:51,546 INFO L87 Difference]: Start difference. First operand 87 states and 122 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:22:51,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:51,651 INFO L93 Difference]: Finished difference Result 227 states and 328 transitions. [2024-11-08 10:22:51,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 10:22:51,651 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-11-08 10:22:51,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:51,652 INFO L225 Difference]: With dead ends: 227 [2024-11-08 10:22:51,652 INFO L226 Difference]: Without dead ends: 147 [2024-11-08 10:22:51,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:22:51,653 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 88 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:51,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 619 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:22:51,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-08 10:22:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 101. [2024-11-08 10:22:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 92 states have (on average 1.434782608695652) internal successors, (132), 93 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 10:22:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 145 transitions. [2024-11-08 10:22:51,661 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 145 transitions. Word has length 49 [2024-11-08 10:22:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:51,662 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 145 transitions. [2024-11-08 10:22:51,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:22:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 145 transitions. [2024-11-08 10:22:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 10:22:51,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:51,663 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:51,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 10:22:51,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:51,864 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:51,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:51,865 INFO L85 PathProgramCache]: Analyzing trace with hash 134147808, now seen corresponding path program 1 times [2024-11-08 10:22:51,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:51,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372409002] [2024-11-08 10:22:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:51,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:22:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 10:22:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:51,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:51,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372409002] [2024-11-08 10:22:51,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372409002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:51,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111509499] [2024-11-08 10:22:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:51,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:51,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:51,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:51,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:22:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:51,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:22:52,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:22:52,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:22:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:52,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111509499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:22:52,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:22:52,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 10:22:52,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314328191] [2024-11-08 10:22:52,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:22:52,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:22:52,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:22:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:22:52,269 INFO L87 Difference]: Start difference. First operand 101 states and 145 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:22:52,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:52,389 INFO L93 Difference]: Finished difference Result 246 states and 360 transitions. [2024-11-08 10:22:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 10:22:52,389 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-11-08 10:22:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:52,390 INFO L225 Difference]: With dead ends: 246 [2024-11-08 10:22:52,391 INFO L226 Difference]: Without dead ends: 152 [2024-11-08 10:22:52,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:22:52,391 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 122 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:52,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 372 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:22:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-08 10:22:52,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 110. [2024-11-08 10:22:52,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 101 states have (on average 1.4554455445544554) internal successors, (147), 102 states have internal predecessors, (147), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 10:22:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 160 transitions. [2024-11-08 10:22:52,400 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 160 transitions. Word has length 50 [2024-11-08 10:22:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:52,400 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 160 transitions. [2024-11-08 10:22:52,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:22:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 160 transitions. [2024-11-08 10:22:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 10:22:52,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:52,402 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:52,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 10:22:52,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:52,603 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:52,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1962941342, now seen corresponding path program 1 times [2024-11-08 10:22:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897959819] [2024-11-08 10:22:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:52,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:52,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:52,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:52,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 10:22:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:52,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:22:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:22:52,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897959819] [2024-11-08 10:22:52,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897959819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407228448] [2024-11-08 10:22:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:52,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:52,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:52,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:52,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:22:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:52,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:22:52,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 10:22:52,772 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:22:52,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407228448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:52,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:22:52,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-08 10:22:52,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620330019] [2024-11-08 10:22:52,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:52,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:22:52,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:52,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:22:52,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:22:52,774 INFO L87 Difference]: Start difference. First operand 110 states and 160 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:52,805 INFO L93 Difference]: Finished difference Result 222 states and 330 transitions. [2024-11-08 10:22:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:22:52,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-11-08 10:22:52,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:52,809 INFO L225 Difference]: With dead ends: 222 [2024-11-08 10:22:52,809 INFO L226 Difference]: Without dead ends: 119 [2024-11-08 10:22:52,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:22:52,810 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:52,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 170 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:52,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-08 10:22:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2024-11-08 10:22:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 103 states have (on average 1.4466019417475728) internal successors, (149), 104 states have internal predecessors, (149), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 10:22:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 162 transitions. [2024-11-08 10:22:52,817 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 162 transitions. Word has length 51 [2024-11-08 10:22:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:52,818 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 162 transitions. [2024-11-08 10:22:52,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 162 transitions. [2024-11-08 10:22:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 10:22:52,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:52,819 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:52,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 10:22:53,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:53,020 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:53,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:53,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1486287046, now seen corresponding path program 1 times [2024-11-08 10:22:53,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:53,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478736519] [2024-11-08 10:22:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:53,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 10:22:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:22:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:22:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:53,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478736519] [2024-11-08 10:22:53,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478736519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:53,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49810452] [2024-11-08 10:22:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:53,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:53,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:53,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:53,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:22:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:22:53,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 10:22:53,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:22:53,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49810452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:53,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:22:53,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-08 10:22:53,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286602262] [2024-11-08 10:22:53,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:53,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:22:53,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:53,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:22:53,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:22:53,132 INFO L87 Difference]: Start difference. First operand 112 states and 162 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:53,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:53,167 INFO L93 Difference]: Finished difference Result 220 states and 324 transitions. [2024-11-08 10:22:53,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:22:53,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-11-08 10:22:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:53,169 INFO L225 Difference]: With dead ends: 220 [2024-11-08 10:22:53,170 INFO L226 Difference]: Without dead ends: 115 [2024-11-08 10:22:53,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 10:22:53,170 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 8 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:53,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 169 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-08 10:22:53,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2024-11-08 10:22:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 100 states have internal predecessors, (141), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 10:22:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 154 transitions. [2024-11-08 10:22:53,177 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 154 transitions. Word has length 51 [2024-11-08 10:22:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:53,177 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 154 transitions. [2024-11-08 10:22:53,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 154 transitions. [2024-11-08 10:22:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 10:22:53,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:53,178 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:53,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 10:22:53,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:53,383 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:53,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:53,383 INFO L85 PathProgramCache]: Analyzing trace with hash -860981081, now seen corresponding path program 1 times [2024-11-08 10:22:53,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:53,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533275634] [2024-11-08 10:22:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:53,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 10:22:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 10:22:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:53,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:53,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533275634] [2024-11-08 10:22:53,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533275634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:53,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560803033] [2024-11-08 10:22:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:53,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:53,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:53,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:53,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:22:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:22:53,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:53,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:22:53,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:22:53,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560803033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:53,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:22:53,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-08 10:22:53,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474727399] [2024-11-08 10:22:53,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:53,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 10:22:53,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 10:22:53,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 10:22:53,582 INFO L87 Difference]: Start difference. First operand 108 states and 154 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:53,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:53,657 INFO L93 Difference]: Finished difference Result 223 states and 318 transitions. [2024-11-08 10:22:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 10:22:53,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-08 10:22:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:53,658 INFO L225 Difference]: With dead ends: 223 [2024-11-08 10:22:53,658 INFO L226 Difference]: Without dead ends: 122 [2024-11-08 10:22:53,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:22:53,659 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 21 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:53,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 253 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:22:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-08 10:22:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 109. [2024-11-08 10:22:53,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 100 states have (on average 1.42) internal successors, (142), 101 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 10:22:53,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2024-11-08 10:22:53,665 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 52 [2024-11-08 10:22:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:53,666 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2024-11-08 10:22:53,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2024-11-08 10:22:53,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 10:22:53,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:53,667 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:53,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 10:22:53,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 10:22:53,868 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:53,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:53,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2104408448, now seen corresponding path program 1 times [2024-11-08 10:22:53,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:53,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60691315] [2024-11-08 10:22:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:53,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 10:22:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 10:22:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:22:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60691315] [2024-11-08 10:22:53,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60691315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332376276] [2024-11-08 10:22:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:53,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:53,953 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:53,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:22:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 10:22:54,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 10:22:54,058 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:22:54,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332376276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:54,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:22:54,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 10:22:54,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567263577] [2024-11-08 10:22:54,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:54,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:22:54,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:54,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:22:54,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:22:54,060 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:54,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:54,091 INFO L93 Difference]: Finished difference Result 218 states and 314 transitions. [2024-11-08 10:22:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:22:54,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-08 10:22:54,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:54,092 INFO L225 Difference]: With dead ends: 218 [2024-11-08 10:22:54,092 INFO L226 Difference]: Without dead ends: 116 [2024-11-08 10:22:54,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:22:54,093 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:54,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 176 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-08 10:22:54,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2024-11-08 10:22:54,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 99 states have (on average 1.4141414141414141) internal successors, (140), 100 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 10:22:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2024-11-08 10:22:54,098 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 52 [2024-11-08 10:22:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:54,099 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2024-11-08 10:22:54,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:54,099 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2024-11-08 10:22:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 10:22:54,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:54,100 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-08 10:22:54,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 10:22:54,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:54,304 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:54,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:54,304 INFO L85 PathProgramCache]: Analyzing trace with hash 77798333, now seen corresponding path program 1 times [2024-11-08 10:22:54,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598407076] [2024-11-08 10:22:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 10:22:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 10:22:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:54,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:54,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598407076] [2024-11-08 10:22:54,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598407076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:54,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692258602] [2024-11-08 10:22:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:54,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:54,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:54,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:54,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 10:22:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 10:22:54,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 10:22:54,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:22:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692258602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:54,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:22:54,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-08 10:22:54,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074179627] [2024-11-08 10:22:54,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:54,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 10:22:54,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 10:22:54,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:22:54,497 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:54,556 INFO L93 Difference]: Finished difference Result 189 states and 272 transitions. [2024-11-08 10:22:54,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 10:22:54,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2024-11-08 10:22:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:54,558 INFO L225 Difference]: With dead ends: 189 [2024-11-08 10:22:54,558 INFO L226 Difference]: Without dead ends: 152 [2024-11-08 10:22:54,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:22:54,559 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 49 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:54,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 553 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-08 10:22:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2024-11-08 10:22:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 139 states have (on average 1.3884892086330936) internal successors, (193), 140 states have internal predecessors, (193), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-08 10:22:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 217 transitions. [2024-11-08 10:22:54,568 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 217 transitions. Word has length 53 [2024-11-08 10:22:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:54,568 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 217 transitions. [2024-11-08 10:22:54,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:22:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 217 transitions. [2024-11-08 10:22:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 10:22:54,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:54,569 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-08 10:22:54,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 10:22:54,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 10:22:54,771 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:54,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1291379781, now seen corresponding path program 1 times [2024-11-08 10:22:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:54,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811345808] [2024-11-08 10:22:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:54,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 10:22:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 10:22:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:54,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:54,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811345808] [2024-11-08 10:22:54,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811345808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:54,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647711523] [2024-11-08 10:22:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:54,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:54,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:54,873 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:54,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 10:22:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:54,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 10:22:54,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:22:55,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:22:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:22:55,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647711523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:22:55,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:22:55,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 14] total 28 [2024-11-08 10:22:55,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938282] [2024-11-08 10:22:55,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:22:55,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 10:22:55,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:55,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 10:22:55,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2024-11-08 10:22:55,510 INFO L87 Difference]: Start difference. First operand 151 states and 217 transitions. Second operand has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 24 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:22:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:57,296 INFO L93 Difference]: Finished difference Result 471 states and 725 transitions. [2024-11-08 10:22:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 10:22:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 24 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 55 [2024-11-08 10:22:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:57,299 INFO L225 Difference]: With dead ends: 471 [2024-11-08 10:22:57,299 INFO L226 Difference]: Without dead ends: 291 [2024-11-08 10:22:57,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=351, Invalid=2841, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 10:22:57,301 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 241 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:57,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 2048 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 10:22:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-08 10:22:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 157. [2024-11-08 10:22:57,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 141 states have (on average 1.3475177304964538) internal successors, (190), 143 states have internal predecessors, (190), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-08 10:22:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 233 transitions. [2024-11-08 10:22:57,313 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 233 transitions. Word has length 55 [2024-11-08 10:22:57,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:57,313 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 233 transitions. [2024-11-08 10:22:57,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.1785714285714284) internal successors, (89), 24 states have internal predecessors, (89), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:22:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 233 transitions. [2024-11-08 10:22:57,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 10:22:57,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:57,315 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:57,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 10:22:57,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 10:22:57,520 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:57,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:57,520 INFO L85 PathProgramCache]: Analyzing trace with hash 34290157, now seen corresponding path program 1 times [2024-11-08 10:22:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:57,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299765558] [2024-11-08 10:22:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:57,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:57,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:57,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:57,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 10:22:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:57,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 10:22:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 10:22:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299765558] [2024-11-08 10:22:57,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299765558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357083401] [2024-11-08 10:22:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:57,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:57,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:57,650 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:57,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 10:22:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:57,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 10:22:57,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 10:22:57,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:22:57,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357083401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:57,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:22:57,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-08 10:22:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920912170] [2024-11-08 10:22:57,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:57,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 10:22:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 10:22:57,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:22:57,728 INFO L87 Difference]: Start difference. First operand 157 states and 233 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:57,750 INFO L93 Difference]: Finished difference Result 178 states and 255 transitions. [2024-11-08 10:22:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 10:22:57,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2024-11-08 10:22:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:57,752 INFO L225 Difference]: With dead ends: 178 [2024-11-08 10:22:57,752 INFO L226 Difference]: Without dead ends: 172 [2024-11-08 10:22:57,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:22:57,753 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:57,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-08 10:22:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-08 10:22:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 156 states have (on average 1.3205128205128205) internal successors, (206), 158 states have internal predecessors, (206), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (34), 10 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-08 10:22:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 249 transitions. [2024-11-08 10:22:57,761 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 249 transitions. Word has length 58 [2024-11-08 10:22:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:57,762 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 249 transitions. [2024-11-08 10:22:57,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 249 transitions. [2024-11-08 10:22:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 10:22:57,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:57,763 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:57,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 10:22:57,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 10:22:57,968 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:57,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash 91548459, now seen corresponding path program 1 times [2024-11-08 10:22:57,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:57,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406817033] [2024-11-08 10:22:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 10:22:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 10:22:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 10:22:58,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:58,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406817033] [2024-11-08 10:22:58,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406817033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:22:58,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:22:58,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 10:22:58,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262729934] [2024-11-08 10:22:58,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:58,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 10:22:58,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:58,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 10:22:58,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:22:58,034 INFO L87 Difference]: Start difference. First operand 172 states and 249 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:58,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:58,055 INFO L93 Difference]: Finished difference Result 178 states and 254 transitions. [2024-11-08 10:22:58,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 10:22:58,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2024-11-08 10:22:58,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:58,056 INFO L225 Difference]: With dead ends: 178 [2024-11-08 10:22:58,057 INFO L226 Difference]: Without dead ends: 161 [2024-11-08 10:22:58,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 10:22:58,057 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 1 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:58,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 453 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-08 10:22:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 159. [2024-11-08 10:22:58,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 144 states have (on average 1.3194444444444444) internal successors, (190), 147 states have internal predecessors, (190), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2024-11-08 10:22:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 226 transitions. [2024-11-08 10:22:58,065 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 226 transitions. Word has length 58 [2024-11-08 10:22:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:58,065 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 226 transitions. [2024-11-08 10:22:58,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 226 transitions. [2024-11-08 10:22:58,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 10:22:58,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:58,066 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:58,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 10:22:58,067 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:58,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:58,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1233960022, now seen corresponding path program 1 times [2024-11-08 10:22:58,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008094174] [2024-11-08 10:22:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 10:22:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:22:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:22:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008094174] [2024-11-08 10:22:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008094174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506592388] [2024-11-08 10:22:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:58,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:58,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:58,168 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:58,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 10:22:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 10:22:58,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:22:58,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:22:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 10:22:58,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506592388] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:58,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 10:22:58,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 13 [2024-11-08 10:22:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596545811] [2024-11-08 10:22:58,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:22:58,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 10:22:58,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 10:22:58,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-08 10:22:58,332 INFO L87 Difference]: Start difference. First operand 159 states and 226 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:58,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:22:58,372 INFO L93 Difference]: Finished difference Result 175 states and 242 transitions. [2024-11-08 10:22:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 10:22:58,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2024-11-08 10:22:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:22:58,373 INFO L225 Difference]: With dead ends: 175 [2024-11-08 10:22:58,373 INFO L226 Difference]: Without dead ends: 163 [2024-11-08 10:22:58,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:22:58,374 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:22:58,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 253 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:22:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-08 10:22:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2024-11-08 10:22:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 145 states have (on average 1.3172413793103448) internal successors, (191), 148 states have internal predecessors, (191), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2024-11-08 10:22:58,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 227 transitions. [2024-11-08 10:22:58,381 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 227 transitions. Word has length 60 [2024-11-08 10:22:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:22:58,381 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 227 transitions. [2024-11-08 10:22:58,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:22:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 227 transitions. [2024-11-08 10:22:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 10:22:58,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:22:58,382 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:22:58,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 10:22:58,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 10:22:58,587 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:22:58,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:22:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash 647154008, now seen corresponding path program 1 times [2024-11-08 10:22:58,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:22:58,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742649525] [2024-11-08 10:22:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:58,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:22:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:22:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:22:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-08 10:22:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:22:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:22:58,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:22:58,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742649525] [2024-11-08 10:22:58,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742649525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:22:58,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125897560] [2024-11-08 10:22:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:22:58,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:22:58,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:22:58,702 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:22:58,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 10:22:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:22:58,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 10:22:58,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:22:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:22:58,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:22:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:22:59,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125897560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:22:59,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:22:59,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 31 [2024-11-08 10:22:59,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595587918] [2024-11-08 10:22:59,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:22:59,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 10:22:59,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:22:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 10:22:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2024-11-08 10:22:59,257 INFO L87 Difference]: Start difference. First operand 160 states and 227 transitions. Second operand has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:23:01,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:01,075 INFO L93 Difference]: Finished difference Result 530 states and 823 transitions. [2024-11-08 10:23:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-08 10:23:01,075 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 60 [2024-11-08 10:23:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:01,077 INFO L225 Difference]: With dead ends: 530 [2024-11-08 10:23:01,078 INFO L226 Difference]: Without dead ends: 343 [2024-11-08 10:23:01,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=595, Invalid=4235, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 10:23:01,080 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 407 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:01,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 2589 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 10:23:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-08 10:23:01,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 164. [2024-11-08 10:23:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 149 states have (on average 1.3288590604026846) internal successors, (198), 152 states have internal predecessors, (198), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2024-11-08 10:23:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2024-11-08 10:23:01,099 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 60 [2024-11-08 10:23:01,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:01,100 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2024-11-08 10:23:01,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:23:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2024-11-08 10:23:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 10:23:01,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:01,101 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2024-11-08 10:23:01,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 10:23:01,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:01,306 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:01,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:01,306 INFO L85 PathProgramCache]: Analyzing trace with hash -347975065, now seen corresponding path program 1 times [2024-11-08 10:23:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:01,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213065928] [2024-11-08 10:23:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:01,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:01,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:01,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:23:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:01,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 10:23:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:23:01,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213065928] [2024-11-08 10:23:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213065928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37912767] [2024-11-08 10:23:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:01,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:01,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:01,462 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:01,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 10:23:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:01,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 10:23:01,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:23:01,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:23:01,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37912767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:01,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:01,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-08 10:23:01,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069527640] [2024-11-08 10:23:01,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:01,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 10:23:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:01,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 10:23:01,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:23:01,712 INFO L87 Difference]: Start difference. First operand 164 states and 234 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:23:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:01,844 INFO L93 Difference]: Finished difference Result 405 states and 570 transitions. [2024-11-08 10:23:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 10:23:01,845 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2024-11-08 10:23:01,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:01,846 INFO L225 Difference]: With dead ends: 405 [2024-11-08 10:23:01,846 INFO L226 Difference]: Without dead ends: 252 [2024-11-08 10:23:01,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2024-11-08 10:23:01,847 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 262 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:01,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 535 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:23:01,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-08 10:23:01,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 178. [2024-11-08 10:23:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 163 states have (on average 1.3558282208588956) internal successors, (221), 166 states have internal predecessors, (221), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2024-11-08 10:23:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 257 transitions. [2024-11-08 10:23:01,856 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 257 transitions. Word has length 62 [2024-11-08 10:23:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:01,857 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 257 transitions. [2024-11-08 10:23:01,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:23:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 257 transitions. [2024-11-08 10:23:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 10:23:01,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:01,858 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-08 10:23:01,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 10:23:02,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 10:23:02,059 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:02,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:02,059 INFO L85 PathProgramCache]: Analyzing trace with hash -756147989, now seen corresponding path program 2 times [2024-11-08 10:23:02,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:02,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883494956] [2024-11-08 10:23:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:02,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 10:23:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 10:23:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 10:23:02,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:02,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883494956] [2024-11-08 10:23:02,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883494956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:23:02,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:23:02,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 10:23:02,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990565047] [2024-11-08 10:23:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:23:02,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 10:23:02,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 10:23:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:23:02,145 INFO L87 Difference]: Start difference. First operand 178 states and 257 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:23:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:02,180 INFO L93 Difference]: Finished difference Result 207 states and 294 transitions. [2024-11-08 10:23:02,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 10:23:02,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2024-11-08 10:23:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:02,182 INFO L225 Difference]: With dead ends: 207 [2024-11-08 10:23:02,182 INFO L226 Difference]: Without dead ends: 195 [2024-11-08 10:23:02,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:23:02,183 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 5 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:02,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 463 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:23:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-08 10:23:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 183. [2024-11-08 10:23:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 167 states have (on average 1.3532934131736527) internal successors, (226), 170 states have internal predecessors, (226), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) [2024-11-08 10:23:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 267 transitions. [2024-11-08 10:23:02,209 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 267 transitions. Word has length 67 [2024-11-08 10:23:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:02,210 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 267 transitions. [2024-11-08 10:23:02,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:23:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 267 transitions. [2024-11-08 10:23:02,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 10:23:02,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:02,211 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:23:02,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 10:23:02,211 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:02,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:02,211 INFO L85 PathProgramCache]: Analyzing trace with hash 423747400, now seen corresponding path program 1 times [2024-11-08 10:23:02,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:02,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772716528] [2024-11-08 10:23:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:02,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 10:23:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-08 10:23:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 10:23:02,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:02,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772716528] [2024-11-08 10:23:02,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772716528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:02,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2714464] [2024-11-08 10:23:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:02,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:02,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:02,338 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:02,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 10:23:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 10:23:02,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 10:23:02,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 10:23:02,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2714464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:02,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:02,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-08 10:23:02,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512190648] [2024-11-08 10:23:02,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:02,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:23:02,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:02,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:23:02,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:23:02,573 INFO L87 Difference]: Start difference. First operand 183 states and 267 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 10:23:02,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:02,683 INFO L93 Difference]: Finished difference Result 191 states and 274 transitions. [2024-11-08 10:23:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:23:02,685 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 70 [2024-11-08 10:23:02,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:02,687 INFO L225 Difference]: With dead ends: 191 [2024-11-08 10:23:02,687 INFO L226 Difference]: Without dead ends: 149 [2024-11-08 10:23:02,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:23:02,689 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 7 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:02,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 877 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:23:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-08 10:23:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-08 10:23:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 138 states have internal predecessors, (182), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-08 10:23:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 212 transitions. [2024-11-08 10:23:02,702 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 212 transitions. Word has length 70 [2024-11-08 10:23:02,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:02,702 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 212 transitions. [2024-11-08 10:23:02,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 12 states have internal predecessors, (55), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 10:23:02,702 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 212 transitions. [2024-11-08 10:23:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 10:23:02,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:02,704 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 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] [2024-11-08 10:23:02,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 10:23:02,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:02,909 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:02,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:02,910 INFO L85 PathProgramCache]: Analyzing trace with hash 290886744, now seen corresponding path program 3 times [2024-11-08 10:23:02,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:02,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567906799] [2024-11-08 10:23:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:02,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:02,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:03,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-08 10:23:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:03,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 10:23:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:23:03,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567906799] [2024-11-08 10:23:03,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567906799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:03,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294646504] [2024-11-08 10:23:03,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:23:03,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:03,264 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:03,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 10:23:03,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 10:23:03,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:23:03,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 10:23:03,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:23:03,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:23:04,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294646504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:04,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 18] total 44 [2024-11-08 10:23:04,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163340887] [2024-11-08 10:23:04,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:04,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 10:23:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 10:23:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 10:23:04,668 INFO L87 Difference]: Start difference. First operand 149 states and 212 transitions. Second operand has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 40 states have internal predecessors, (134), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:23:09,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:09,245 INFO L93 Difference]: Finished difference Result 564 states and 839 transitions. [2024-11-08 10:23:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-08 10:23:09,246 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 40 states have internal predecessors, (134), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 72 [2024-11-08 10:23:09,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:09,248 INFO L225 Difference]: With dead ends: 564 [2024-11-08 10:23:09,248 INFO L226 Difference]: Without dead ends: 418 [2024-11-08 10:23:09,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4344 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2139, Invalid=13611, Unknown=0, NotChecked=0, Total=15750 [2024-11-08 10:23:09,256 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 1049 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:09,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 2960 Invalid, 3571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 10:23:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-08 10:23:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 167. [2024-11-08 10:23:09,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 149 states have (on average 1.3691275167785235) internal successors, (204), 154 states have internal predecessors, (204), 9 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (41), 9 states have call predecessors, (41), 8 states have call successors, (41) [2024-11-08 10:23:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 254 transitions. [2024-11-08 10:23:09,270 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 254 transitions. Word has length 72 [2024-11-08 10:23:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:09,271 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 254 transitions. [2024-11-08 10:23:09,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.0454545454545454) internal successors, (134), 40 states have internal predecessors, (134), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:23:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 254 transitions. [2024-11-08 10:23:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-08 10:23:09,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:09,272 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 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] [2024-11-08 10:23:09,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 10:23:09,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:09,477 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:09,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash 974959335, now seen corresponding path program 2 times [2024-11-08 10:23:09,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:09,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393852891] [2024-11-08 10:23:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:09,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:09,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:09,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:09,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 10:23:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:09,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 10:23:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:23:09,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:09,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393852891] [2024-11-08 10:23:09,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393852891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:09,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470130062] [2024-11-08 10:23:09,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:23:09,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:09,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:09,730 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:09,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 10:23:09,792 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:23:09,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:23:09,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 10:23:09,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:23:09,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:23:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470130062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:10,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2024-11-08 10:23:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060923623] [2024-11-08 10:23:10,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:10,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 10:23:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:10,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 10:23:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=916, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 10:23:10,220 INFO L87 Difference]: Start difference. First operand 167 states and 254 transitions. Second operand has 38 states, 38 states have (on average 3.8684210526315788) internal successors, (147), 38 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:23:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:10,418 INFO L93 Difference]: Finished difference Result 506 states and 726 transitions. [2024-11-08 10:23:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 10:23:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.8684210526315788) internal successors, (147), 38 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2024-11-08 10:23:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:10,420 INFO L225 Difference]: With dead ends: 506 [2024-11-08 10:23:10,420 INFO L226 Difference]: Without dead ends: 354 [2024-11-08 10:23:10,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=525, Invalid=957, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 10:23:10,421 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 560 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:10,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 769 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:23:10,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-08 10:23:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 193. [2024-11-08 10:23:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 175 states have (on average 1.4114285714285715) internal successors, (247), 180 states have internal predecessors, (247), 9 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (41), 9 states have call predecessors, (41), 8 states have call successors, (41) [2024-11-08 10:23:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 297 transitions. [2024-11-08 10:23:10,438 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 297 transitions. Word has length 80 [2024-11-08 10:23:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:10,438 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 297 transitions. [2024-11-08 10:23:10,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.8684210526315788) internal successors, (147), 38 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:23:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 297 transitions. [2024-11-08 10:23:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-08 10:23:10,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:10,441 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:23:10,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 10:23:10,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:10,642 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:10,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1356621440, now seen corresponding path program 1 times [2024-11-08 10:23:10,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:10,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397536252] [2024-11-08 10:23:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:10,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 10:23:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 10:23:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 10:23:10,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397536252] [2024-11-08 10:23:10,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397536252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:23:10,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:23:10,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 10:23:10,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330342402] [2024-11-08 10:23:10,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:23:10,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 10:23:10,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:10,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 10:23:10,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:23:10,814 INFO L87 Difference]: Start difference. First operand 193 states and 297 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:23:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:10,860 INFO L93 Difference]: Finished difference Result 243 states and 361 transitions. [2024-11-08 10:23:10,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 10:23:10,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 80 [2024-11-08 10:23:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:10,865 INFO L225 Difference]: With dead ends: 243 [2024-11-08 10:23:10,865 INFO L226 Difference]: Without dead ends: 196 [2024-11-08 10:23:10,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:23:10,865 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 1 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:10,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 440 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:23:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-08 10:23:10,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2024-11-08 10:23:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 173 states have (on average 1.416184971098266) internal successors, (245), 176 states have internal predecessors, (245), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-08 10:23:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 275 transitions. [2024-11-08 10:23:10,889 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 275 transitions. Word has length 80 [2024-11-08 10:23:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:10,889 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 275 transitions. [2024-11-08 10:23:10,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:23:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 275 transitions. [2024-11-08 10:23:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-08 10:23:10,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:10,890 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 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] [2024-11-08 10:23:10,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 10:23:10,890 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:10,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:10,890 INFO L85 PathProgramCache]: Analyzing trace with hash -995007567, now seen corresponding path program 2 times [2024-11-08 10:23:10,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:10,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279966783] [2024-11-08 10:23:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:10,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 10:23:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 10:23:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-08 10:23:10,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:10,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279966783] [2024-11-08 10:23:10,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279966783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:10,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201397530] [2024-11-08 10:23:10,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:23:10,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:10,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:10,987 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:10,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 10:23:11,044 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 10:23:11,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:23:11,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 10:23:11,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-08 10:23:11,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:23:11,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201397530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:23:11,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:23:11,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 12 [2024-11-08 10:23:11,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349828913] [2024-11-08 10:23:11,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:23:11,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 10:23:11,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:11,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 10:23:11,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:23:11,094 INFO L87 Difference]: Start difference. First operand 188 states and 275 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:23:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:11,163 INFO L93 Difference]: Finished difference Result 208 states and 297 transitions. [2024-11-08 10:23:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:23:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2024-11-08 10:23:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:11,165 INFO L225 Difference]: With dead ends: 208 [2024-11-08 10:23:11,165 INFO L226 Difference]: Without dead ends: 203 [2024-11-08 10:23:11,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-08 10:23:11,166 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 7 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:11,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 760 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:23:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-08 10:23:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2024-11-08 10:23:11,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 180 states have (on average 1.4) internal successors, (252), 183 states have internal predecessors, (252), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2024-11-08 10:23:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 282 transitions. [2024-11-08 10:23:11,185 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 282 transitions. Word has length 84 [2024-11-08 10:23:11,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:11,185 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 282 transitions. [2024-11-08 10:23:11,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:23:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 282 transitions. [2024-11-08 10:23:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 10:23:11,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:11,187 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 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] [2024-11-08 10:23:11,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 10:23:11,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:11,391 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:11,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash -976468080, now seen corresponding path program 1 times [2024-11-08 10:23:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023459070] [2024-11-08 10:23:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:11,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:11,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:11,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 10:23:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:11,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 10:23:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-08 10:23:11,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:11,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023459070] [2024-11-08 10:23:11,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023459070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:11,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379509099] [2024-11-08 10:23:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:11,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:11,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:11,514 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:11,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 10:23:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:11,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 10:23:11,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-08 10:23:11,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:23:11,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379509099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:23:11,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:23:11,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 9 [2024-11-08 10:23:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087554191] [2024-11-08 10:23:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:23:11,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 10:23:11,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 10:23:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:23:11,606 INFO L87 Difference]: Start difference. First operand 195 states and 282 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:23:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:11,660 INFO L93 Difference]: Finished difference Result 306 states and 431 transitions. [2024-11-08 10:23:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 10:23:11,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 85 [2024-11-08 10:23:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:11,662 INFO L225 Difference]: With dead ends: 306 [2024-11-08 10:23:11,662 INFO L226 Difference]: Without dead ends: 247 [2024-11-08 10:23:11,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:23:11,662 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 47 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:11,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 616 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:23:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-08 10:23:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 229. [2024-11-08 10:23:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 212 states have (on average 1.3915094339622642) internal successors, (295), 212 states have internal predecessors, (295), 9 states have call successors, (9), 3 states have call predecessors, (9), 7 states have return successors, (34), 13 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-08 10:23:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 338 transitions. [2024-11-08 10:23:11,678 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 338 transitions. Word has length 85 [2024-11-08 10:23:11,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:11,678 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 338 transitions. [2024-11-08 10:23:11,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:23:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 338 transitions. [2024-11-08 10:23:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 10:23:11,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:11,680 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 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] [2024-11-08 10:23:11,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 10:23:11,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 10:23:11,881 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:11,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1629555474, now seen corresponding path program 1 times [2024-11-08 10:23:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708689992] [2024-11-08 10:23:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:11,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:11,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:12,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 10:23:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:12,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 10:23:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 4 proven. 73 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 10:23:12,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:12,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708689992] [2024-11-08 10:23:12,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708689992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:12,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762459056] [2024-11-08 10:23:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:12,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:12,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:12,162 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:12,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 10:23:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:12,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 10:23:12,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 10:23:12,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 10:23:13,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762459056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:13,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:13,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2024-11-08 10:23:13,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160995283] [2024-11-08 10:23:13,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:13,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 10:23:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 10:23:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2024-11-08 10:23:13,092 INFO L87 Difference]: Start difference. First operand 229 states and 338 transitions. Second operand has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 26 states have internal predecessors, (118), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:23:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:14,643 INFO L93 Difference]: Finished difference Result 639 states and 1003 transitions. [2024-11-08 10:23:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 10:23:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 26 states have internal predecessors, (118), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 85 [2024-11-08 10:23:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:14,646 INFO L225 Difference]: With dead ends: 639 [2024-11-08 10:23:14,646 INFO L226 Difference]: Without dead ends: 370 [2024-11-08 10:23:14,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=446, Invalid=3214, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 10:23:14,649 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 268 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:14,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 2564 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 10:23:14,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-08 10:23:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 249. [2024-11-08 10:23:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 224 states have (on average 1.3705357142857142) internal successors, (307), 226 states have internal predecessors, (307), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:23:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 408 transitions. [2024-11-08 10:23:14,671 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 408 transitions. Word has length 85 [2024-11-08 10:23:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:14,672 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 408 transitions. [2024-11-08 10:23:14,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.933333333333333) internal successors, (118), 26 states have internal predecessors, (118), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:23:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 408 transitions. [2024-11-08 10:23:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-08 10:23:14,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:14,674 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 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] [2024-11-08 10:23:14,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 10:23:14,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 10:23:14,878 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:14,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:14,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2141293839, now seen corresponding path program 1 times [2024-11-08 10:23:14,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:14,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313173641] [2024-11-08 10:23:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:14,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:14,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:14,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:15,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 10:23:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:15,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 10:23:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 10:23:15,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:15,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313173641] [2024-11-08 10:23:15,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313173641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:15,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114814622] [2024-11-08 10:23:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:15,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:15,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:15,094 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:15,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 10:23:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:15,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 10:23:15,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 26 proven. 84 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 10:23:15,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 10:23:15,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114814622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:15,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:15,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-08 10:23:15,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139633668] [2024-11-08 10:23:15,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:15,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 10:23:15,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:15,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 10:23:15,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=649, Unknown=0, NotChecked=0, Total=930 [2024-11-08 10:23:15,552 INFO L87 Difference]: Start difference. First operand 249 states and 408 transitions. Second operand has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 10:23:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:16,395 INFO L93 Difference]: Finished difference Result 620 states and 986 transitions. [2024-11-08 10:23:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 10:23:16,395 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2024-11-08 10:23:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:16,398 INFO L225 Difference]: With dead ends: 620 [2024-11-08 10:23:16,398 INFO L226 Difference]: Without dead ends: 390 [2024-11-08 10:23:16,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=529, Invalid=953, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 10:23:16,400 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 430 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:16,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1749 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 10:23:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-08 10:23:16,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 254. [2024-11-08 10:23:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 229 states have (on average 1.3668122270742358) internal successors, (313), 231 states have internal predecessors, (313), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:23:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 414 transitions. [2024-11-08 10:23:16,418 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 414 transitions. Word has length 89 [2024-11-08 10:23:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:16,418 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 414 transitions. [2024-11-08 10:23:16,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.709677419354839) internal successors, (146), 31 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 10:23:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 414 transitions. [2024-11-08 10:23:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 10:23:16,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:16,420 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 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] [2024-11-08 10:23:16,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 10:23:16,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 10:23:16,624 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:16,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1181284945, now seen corresponding path program 1 times [2024-11-08 10:23:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:16,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000901199] [2024-11-08 10:23:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:16,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:16,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:16,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:17,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 10:23:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:17,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 10:23:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:17,049 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 10:23:17,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:17,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000901199] [2024-11-08 10:23:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000901199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084805317] [2024-11-08 10:23:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:17,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:17,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:17,052 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:17,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 10:23:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:17,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 10:23:17,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-08 10:23:17,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:23:17,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084805317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:23:17,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:23:17,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2024-11-08 10:23:17,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356362096] [2024-11-08 10:23:17,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:23:17,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 10:23:17,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:17,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 10:23:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-08 10:23:17,463 INFO L87 Difference]: Start difference. First operand 254 states and 414 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:23:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:17,612 INFO L93 Difference]: Finished difference Result 299 states and 466 transitions. [2024-11-08 10:23:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:23:17,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 90 [2024-11-08 10:23:17,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:17,615 INFO L225 Difference]: With dead ends: 299 [2024-11-08 10:23:17,615 INFO L226 Difference]: Without dead ends: 268 [2024-11-08 10:23:17,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-11-08 10:23:17,616 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 47 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:17,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 638 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:23:17,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-08 10:23:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 256. [2024-11-08 10:23:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 231 states have (on average 1.3636363636363635) internal successors, (315), 233 states have internal predecessors, (315), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:23:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 416 transitions. [2024-11-08 10:23:17,640 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 416 transitions. Word has length 90 [2024-11-08 10:23:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:17,640 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 416 transitions. [2024-11-08 10:23:17,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:23:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 416 transitions. [2024-11-08 10:23:17,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 10:23:17,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:17,642 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 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] [2024-11-08 10:23:17,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-08 10:23:17,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:17,847 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:17,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:17,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1628149364, now seen corresponding path program 1 times [2024-11-08 10:23:17,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:17,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376912413] [2024-11-08 10:23:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:17,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:17,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 10:23:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 10:23:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 94 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 10:23:18,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:18,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376912413] [2024-11-08 10:23:18,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376912413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:18,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402444587] [2024-11-08 10:23:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:18,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:18,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:18,269 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:18,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 10:23:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 10:23:18,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-08 10:23:18,456 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:23:18,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402444587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:23:18,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:23:18,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2024-11-08 10:23:18,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138285525] [2024-11-08 10:23:18,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:23:18,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:23:18,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:23:18,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-08 10:23:18,458 INFO L87 Difference]: Start difference. First operand 256 states and 416 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:23:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:18,609 INFO L93 Difference]: Finished difference Result 299 states and 465 transitions. [2024-11-08 10:23:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 10:23:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2024-11-08 10:23:18,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:18,611 INFO L225 Difference]: With dead ends: 299 [2024-11-08 10:23:18,611 INFO L226 Difference]: Without dead ends: 272 [2024-11-08 10:23:18,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2024-11-08 10:23:18,612 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 53 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:18,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 849 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:23:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-08 10:23:18,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 260. [2024-11-08 10:23:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 235 states have (on average 1.3574468085106384) internal successors, (319), 237 states have internal predecessors, (319), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:23:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 420 transitions. [2024-11-08 10:23:18,629 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 420 transitions. Word has length 92 [2024-11-08 10:23:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:18,629 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 420 transitions. [2024-11-08 10:23:18,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 10:23:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 420 transitions. [2024-11-08 10:23:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 10:23:18,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:18,631 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 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] [2024-11-08 10:23:18,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-08 10:23:18,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 10:23:18,834 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:18,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:18,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1089209382, now seen corresponding path program 1 times [2024-11-08 10:23:18,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:18,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969787845] [2024-11-08 10:23:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:18,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 10:23:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-08 10:23:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-08 10:23:18,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969787845] [2024-11-08 10:23:18,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969787845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187259875] [2024-11-08 10:23:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:18,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:18,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:18,933 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:18,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 10:23:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:18,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 10:23:18,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-08 10:23:19,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-08 10:23:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187259875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:19,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:19,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2024-11-08 10:23:19,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549845176] [2024-11-08 10:23:19,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:19,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 10:23:19,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:19,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 10:23:19,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:23:19,132 INFO L87 Difference]: Start difference. First operand 260 states and 420 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 10:23:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:19,192 INFO L93 Difference]: Finished difference Result 307 states and 474 transitions. [2024-11-08 10:23:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 10:23:19,192 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 93 [2024-11-08 10:23:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:19,194 INFO L225 Difference]: With dead ends: 307 [2024-11-08 10:23:19,194 INFO L226 Difference]: Without dead ends: 272 [2024-11-08 10:23:19,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-08 10:23:19,195 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 44 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:19,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 837 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:23:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-08 10:23:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 260. [2024-11-08 10:23:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 235 states have (on average 1.348936170212766) internal successors, (317), 237 states have internal predecessors, (317), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 19 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:23:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 418 transitions. [2024-11-08 10:23:19,212 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 418 transitions. Word has length 93 [2024-11-08 10:23:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:19,212 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 418 transitions. [2024-11-08 10:23:19,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 10:23:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 418 transitions. [2024-11-08 10:23:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 10:23:19,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:19,214 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 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] [2024-11-08 10:23:19,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-08 10:23:19,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:19,417 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:19,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash -599734360, now seen corresponding path program 1 times [2024-11-08 10:23:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:19,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758842192] [2024-11-08 10:23:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:19,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:19,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:19,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:19,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 10:23:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:19,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-08 10:23:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:23:19,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:19,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758842192] [2024-11-08 10:23:19,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758842192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:19,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382085510] [2024-11-08 10:23:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:19,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:19,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:19,723 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:19,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 10:23:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:20,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 10:23:20,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-08 10:23:20,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-08 10:23:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382085510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:21,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:21,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 15] total 38 [2024-11-08 10:23:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716314637] [2024-11-08 10:23:21,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:21,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 10:23:21,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:21,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 10:23:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 10:23:21,239 INFO L87 Difference]: Start difference. First operand 260 states and 418 transitions. Second operand has 38 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 34 states have internal predecessors, (115), 4 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-08 10:23:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:24,354 INFO L93 Difference]: Finished difference Result 603 states and 961 transitions. [2024-11-08 10:23:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-08 10:23:24,355 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 34 states have internal predecessors, (115), 4 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 93 [2024-11-08 10:23:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:24,357 INFO L225 Difference]: With dead ends: 603 [2024-11-08 10:23:24,357 INFO L226 Difference]: Without dead ends: 371 [2024-11-08 10:23:24,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1403 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=621, Invalid=6519, Unknown=0, NotChecked=0, Total=7140 [2024-11-08 10:23:24,360 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 383 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:24,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 2422 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 10:23:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-08 10:23:24,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 273. [2024-11-08 10:23:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 248 states have (on average 1.342741935483871) internal successors, (333), 249 states have internal predecessors, (333), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:23:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 434 transitions. [2024-11-08 10:23:24,381 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 434 transitions. Word has length 93 [2024-11-08 10:23:24,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:24,381 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 434 transitions. [2024-11-08 10:23:24,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 34 states have internal predecessors, (115), 4 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-08 10:23:24,382 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 434 transitions. [2024-11-08 10:23:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-08 10:23:24,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:24,383 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 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] [2024-11-08 10:23:24,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 10:23:24,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-08 10:23:24,588 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:24,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1265325480, now seen corresponding path program 4 times [2024-11-08 10:23:24,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:24,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876309569] [2024-11-08 10:23:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:24,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:24,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:24,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:25,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 10:23:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:25,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 10:23:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 4 proven. 282 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:23:25,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:25,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876309569] [2024-11-08 10:23:25,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876309569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:25,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193468628] [2024-11-08 10:23:25,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 10:23:25,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:25,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:25,055 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:25,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 10:23:25,120 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 10:23:25,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:23:25,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-08 10:23:25,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 10 proven. 282 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:23:25,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 10 proven. 282 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 10:23:27,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193468628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:27,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:27,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 27] total 67 [2024-11-08 10:23:27,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971398999] [2024-11-08 10:23:27,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:27,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-08 10:23:27,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:27,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-08 10:23:27,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=4036, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 10:23:27,155 INFO L87 Difference]: Start difference. First operand 273 states and 434 transitions. Second operand has 67 states, 67 states have (on average 3.1194029850746268) internal successors, (209), 63 states have internal predecessors, (209), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:23:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:23:40,209 INFO L93 Difference]: Finished difference Result 1077 states and 1790 transitions. [2024-11-08 10:23:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-08 10:23:40,209 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.1194029850746268) internal successors, (209), 63 states have internal predecessors, (209), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 96 [2024-11-08 10:23:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:23:40,213 INFO L225 Difference]: With dead ends: 1077 [2024-11-08 10:23:40,214 INFO L226 Difference]: Without dead ends: 810 [2024-11-08 10:23:40,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9136 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=5737, Invalid=30173, Unknown=0, NotChecked=0, Total=35910 [2024-11-08 10:23:40,220 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 5007 mSDsluCounter, 6274 mSDsCounter, 0 mSdLazyCounter, 7796 mSolverCounterSat, 1545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 6432 SdHoareTripleChecker+Invalid, 9341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1545 IncrementalHoareTripleChecker+Valid, 7796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:23:40,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 6432 Invalid, 9341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1545 Valid, 7796 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 10:23:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2024-11-08 10:23:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 306. [2024-11-08 10:23:40,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 277 states have (on average 1.364620938628159) internal successors, (378), 279 states have internal predecessors, (378), 18 states have call successors, (18), 3 states have call predecessors, (18), 10 states have return successors, (120), 23 states have call predecessors, (120), 17 states have call successors, (120) [2024-11-08 10:23:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 516 transitions. [2024-11-08 10:23:40,253 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 516 transitions. Word has length 96 [2024-11-08 10:23:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:23:40,253 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 516 transitions. [2024-11-08 10:23:40,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.1194029850746268) internal successors, (209), 63 states have internal predecessors, (209), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:23:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 516 transitions. [2024-11-08 10:23:40,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-08 10:23:40,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:23:40,256 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 4, 4, 4, 3, 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] [2024-11-08 10:23:40,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-08 10:23:40,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:40,458 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:23:40,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:23:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash 686776477, now seen corresponding path program 1 times [2024-11-08 10:23:40,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:23:40,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775227681] [2024-11-08 10:23:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:40,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:23:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:40,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:23:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:40,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:23:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:41,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 10:23:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:41,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-08 10:23:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 4 proven. 331 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:23:41,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:23:41,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775227681] [2024-11-08 10:23:41,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775227681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:23:41,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385065533] [2024-11-08 10:23:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:23:41,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:23:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:23:41,046 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:23:41,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 10:23:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:23:41,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-08 10:23:41,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:23:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 10 proven. 331 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 10:23:42,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:23:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 4 proven. 331 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:23:43,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385065533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:23:43,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:23:43,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29, 27] total 71 [2024-11-08 10:23:43,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593161207] [2024-11-08 10:23:43,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:23:43,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 10:23:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:23:43,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 10:23:43,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=4533, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 10:23:43,433 INFO L87 Difference]: Start difference. First operand 306 states and 516 transitions. Second operand has 71 states, 71 states have (on average 3.140845070422535) internal successors, (223), 67 states have internal predecessors, (223), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:24:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:24:05,950 INFO L93 Difference]: Finished difference Result 1153 states and 2026 transitions. [2024-11-08 10:24:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-11-08 10:24:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.140845070422535) internal successors, (223), 67 states have internal predecessors, (223), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 108 [2024-11-08 10:24:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:24:05,959 INFO L225 Difference]: With dead ends: 1153 [2024-11-08 10:24:05,959 INFO L226 Difference]: Without dead ends: 868 [2024-11-08 10:24:05,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11785 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=6532, Invalid=37358, Unknown=0, NotChecked=0, Total=43890 [2024-11-08 10:24:05,966 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 4698 mSDsluCounter, 5306 mSDsCounter, 0 mSdLazyCounter, 7475 mSolverCounterSat, 1306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 8781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1306 IncrementalHoareTripleChecker+Valid, 7475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-08 10:24:05,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 5457 Invalid, 8781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1306 Valid, 7475 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-08 10:24:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2024-11-08 10:24:06,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 302. [2024-11-08 10:24:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 277 states have (on average 1.3790613718411553) internal successors, (382), 278 states have internal predecessors, (382), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:24:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 483 transitions. [2024-11-08 10:24:06,009 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 483 transitions. Word has length 108 [2024-11-08 10:24:06,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:24:06,009 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 483 transitions. [2024-11-08 10:24:06,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.140845070422535) internal successors, (223), 67 states have internal predecessors, (223), 4 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-08 10:24:06,010 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 483 transitions. [2024-11-08 10:24:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 10:24:06,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:24:06,011 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 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] [2024-11-08 10:24:06,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-08 10:24:06,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:24:06,216 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:24:06,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:24:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash 761533415, now seen corresponding path program 3 times [2024-11-08 10:24:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:24:06,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655208741] [2024-11-08 10:24:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:24:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:06,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:24:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:06,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:24:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:06,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-08 10:24:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:06,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-08 10:24:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:24:06,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:24:06,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655208741] [2024-11-08 10:24:06,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655208741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:24:06,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551898572] [2024-11-08 10:24:06,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:24:06,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:24:06,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:24:06,760 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:24:06,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 10:24:06,862 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-11-08 10:24:06,863 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:24:06,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 10:24:06,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:24:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 25 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 10:24:07,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:24:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 4 proven. 746 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 10:24:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551898572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:24:08,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:24:08,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 74 [2024-11-08 10:24:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914640854] [2024-11-08 10:24:08,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:24:08,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-08 10:24:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:24:08,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-08 10:24:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1846, Invalid=3556, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 10:24:08,218 INFO L87 Difference]: Start difference. First operand 302 states and 483 transitions. Second operand has 74 states, 74 states have (on average 3.445945945945946) internal successors, (255), 74 states have internal predecessors, (255), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:24:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:24:08,745 INFO L93 Difference]: Finished difference Result 920 states and 1357 transitions. [2024-11-08 10:24:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-08 10:24:08,746 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.445945945945946) internal successors, (255), 74 states have internal predecessors, (255), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2024-11-08 10:24:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:24:08,754 INFO L225 Difference]: With dead ends: 920 [2024-11-08 10:24:08,754 INFO L226 Difference]: Without dead ends: 669 [2024-11-08 10:24:08,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1917, Invalid=3633, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 10:24:08,760 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 1684 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:24:08,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 892 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:24:08,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-08 10:24:08,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 346. [2024-11-08 10:24:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 321 states have (on average 1.4174454828660437) internal successors, (455), 322 states have internal predecessors, (455), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:24:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 556 transitions. [2024-11-08 10:24:08,831 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 556 transitions. Word has length 116 [2024-11-08 10:24:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:24:08,832 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 556 transitions. [2024-11-08 10:24:08,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.445945945945946) internal successors, (255), 74 states have internal predecessors, (255), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 10:24:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 556 transitions. [2024-11-08 10:24:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-08 10:24:08,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:24:08,833 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 3, 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] [2024-11-08 10:24:08,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-08 10:24:09,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:24:09,034 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:24:09,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:24:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash -265556877, now seen corresponding path program 1 times [2024-11-08 10:24:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:24:09,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110925516] [2024-11-08 10:24:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:24:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:09,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:24:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:09,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:24:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:09,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-08 10:24:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:09,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 10:24:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 4 proven. 376 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:24:09,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:24:09,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110925516] [2024-11-08 10:24:09,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110925516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:24:09,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082070201] [2024-11-08 10:24:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:09,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:24:09,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:24:09,816 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:24:09,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 10:24:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:10,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 10:24:10,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:24:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-08 10:24:10,110 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:24:10,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082070201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:24:10,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:24:10,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [20] total 26 [2024-11-08 10:24:10,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130786277] [2024-11-08 10:24:10,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:24:10,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 10:24:10,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:24:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 10:24:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2024-11-08 10:24:10,112 INFO L87 Difference]: Start difference. First operand 346 states and 556 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:24:10,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:24:10,182 INFO L93 Difference]: Finished difference Result 397 states and 618 transitions. [2024-11-08 10:24:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 10:24:10,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 119 [2024-11-08 10:24:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:24:10,184 INFO L225 Difference]: With dead ends: 397 [2024-11-08 10:24:10,185 INFO L226 Difference]: Without dead ends: 350 [2024-11-08 10:24:10,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2024-11-08 10:24:10,185 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 8 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:24:10,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 612 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:24:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-08 10:24:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2024-11-08 10:24:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 323 states have (on average 1.414860681114551) internal successors, (457), 324 states have internal predecessors, (457), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:24:10,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 558 transitions. [2024-11-08 10:24:10,221 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 558 transitions. Word has length 119 [2024-11-08 10:24:10,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:24:10,221 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 558 transitions. [2024-11-08 10:24:10,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:24:10,221 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 558 transitions. [2024-11-08 10:24:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-08 10:24:10,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:24:10,222 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:24:10,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-08 10:24:10,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 10:24:10,427 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:24:10,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:24:10,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2142686962, now seen corresponding path program 1 times [2024-11-08 10:24:10,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:24:10,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772155828] [2024-11-08 10:24:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:10,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:24:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:10,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:24:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:10,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:24:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:11,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-08 10:24:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:11,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 10:24:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 4 proven. 376 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:24:11,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:24:11,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772155828] [2024-11-08 10:24:11,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772155828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:24:11,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602336486] [2024-11-08 10:24:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:11,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:24:11,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:24:11,045 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:24:11,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-08 10:24:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:11,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 10:24:11,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:24:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-08 10:24:11,222 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:24:11,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602336486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:24:11,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:24:11,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2024-11-08 10:24:11,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294325334] [2024-11-08 10:24:11,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:24:11,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 10:24:11,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:24:11,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 10:24:11,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-11-08 10:24:11,223 INFO L87 Difference]: Start difference. First operand 348 states and 558 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:24:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:24:11,286 INFO L93 Difference]: Finished difference Result 386 states and 604 transitions. [2024-11-08 10:24:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 10:24:11,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 120 [2024-11-08 10:24:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:24:11,289 INFO L225 Difference]: With dead ends: 386 [2024-11-08 10:24:11,289 INFO L226 Difference]: Without dead ends: 350 [2024-11-08 10:24:11,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-11-08 10:24:11,290 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 5 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:24:11,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 520 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:24:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-08 10:24:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2024-11-08 10:24:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 323 states have (on average 1.411764705882353) internal successors, (456), 324 states have internal predecessors, (456), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:24:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 557 transitions. [2024-11-08 10:24:11,321 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 557 transitions. Word has length 120 [2024-11-08 10:24:11,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:24:11,321 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 557 transitions. [2024-11-08 10:24:11,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:24:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 557 transitions. [2024-11-08 10:24:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-08 10:24:11,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:24:11,323 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 3, 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] [2024-11-08 10:24:11,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-08 10:24:11,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 10:24:11,527 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:24:11,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:24:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1512404970, now seen corresponding path program 1 times [2024-11-08 10:24:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:24:11,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025330787] [2024-11-08 10:24:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:11,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:24:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:11,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:24:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:11,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:24:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:12,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-08 10:24:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:12,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 10:24:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 4 proven. 376 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 10:24:12,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:24:12,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025330787] [2024-11-08 10:24:12,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025330787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:24:12,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578027456] [2024-11-08 10:24:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:12,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:24:12,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:24:12,105 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:24:12,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-08 10:24:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:12,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 10:24:12,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:24:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-08 10:24:12,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:24:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578027456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:24:12,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:24:12,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 28 [2024-11-08 10:24:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121057988] [2024-11-08 10:24:12,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:24:12,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 10:24:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:24:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 10:24:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2024-11-08 10:24:12,486 INFO L87 Difference]: Start difference. First operand 348 states and 557 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:24:12,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:24:12,665 INFO L93 Difference]: Finished difference Result 379 states and 596 transitions. [2024-11-08 10:24:12,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 10:24:12,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 121 [2024-11-08 10:24:12,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:24:12,668 INFO L225 Difference]: With dead ends: 379 [2024-11-08 10:24:12,668 INFO L226 Difference]: Without dead ends: 367 [2024-11-08 10:24:12,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2024-11-08 10:24:12,668 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 21 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:24:12,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 865 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 10:24:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-08 10:24:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 352. [2024-11-08 10:24:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 327 states have (on average 1.4097859327217126) internal successors, (461), 328 states have internal predecessors, (461), 15 states have call successors, (15), 3 states have call predecessors, (15), 9 states have return successors, (86), 20 states have call predecessors, (86), 14 states have call successors, (86) [2024-11-08 10:24:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 562 transitions. [2024-11-08 10:24:12,708 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 562 transitions. Word has length 121 [2024-11-08 10:24:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:24:12,708 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 562 transitions. [2024-11-08 10:24:12,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 10:24:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 562 transitions. [2024-11-08 10:24:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-08 10:24:12,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:24:12,710 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 10:24:12,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-08 10:24:12,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:24:12,910 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:24:12,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:24:12,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2072620124, now seen corresponding path program 1 times [2024-11-08 10:24:12,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:24:12,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441899162] [2024-11-08 10:24:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:12,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:24:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:13,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 10:24:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:13,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 10:24:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:13,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 10:24:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:13,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-08 10:24:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 4 proven. 382 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 10:24:13,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:24:13,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441899162] [2024-11-08 10:24:13,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441899162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:24:13,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833790546] [2024-11-08 10:24:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:13,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:24:13,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:24:13,451 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:24:13,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-08 10:24:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:13,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-08 10:24:13,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:24:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 12 proven. 378 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 10:24:16,213 INFO L311 TraceCheckSpWp]: Computing backward predicates...