/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 00:27:58,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 00:27:58,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 00:27:58,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 00:27:58,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 00:27:58,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 00:27:58,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 00:27:58,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 00:27:58,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 00:27:58,224 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 00:27:58,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 00:27:58,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 00:27:58,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 00:27:58,225 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 00:27:58,225 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 00:27:58,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 00:27:58,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 00:27:58,225 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 00:27:58,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 00:27:58,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 00:27:58,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 00:27:58,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 00:27:58,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 00:27:58,231 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 00:27:58,231 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 00:27:58,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 00:27:58,231 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 00:27:58,231 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 00:27:58,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 00:27:58,231 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 00:27:58,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 00:27:58,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 00:27:58,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 00:27:58,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 00:27:58,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:27:58,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 00:27:58,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 00:27:58,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 00:27:58,233 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 00:27:58,233 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 00:27:58,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 00:27:58,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 00:27:58,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 00:27:58,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 00:27:58,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:27:58,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 00:27:58,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 00:27:58,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 00:27:58,453 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 00:27:58,453 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 00:27:58,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c [2024-11-03 00:27:59,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 00:27:59,838 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 00:27:59,838 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c [2024-11-03 00:27:59,844 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3f55fac6/768bd02c04bb46fbbbdfa4d654cc8642/FLAG55bdb18bb [2024-11-03 00:28:00,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3f55fac6/768bd02c04bb46fbbbdfa4d654cc8642 [2024-11-03 00:28:00,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 00:28:00,262 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 00:28:00,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 00:28:00,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 00:28:00,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 00:28:00,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e841561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00, skipping insertion in model container [2024-11-03 00:28:00,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,290 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 00:28:00,422 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c[613,626] [2024-11-03 00:28:00,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:28:00,446 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 00:28:00,455 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-nonlinear/color-magicseries1.c[613,626] [2024-11-03 00:28:00,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:28:00,476 INFO L204 MainTranslator]: Completed translation [2024-11-03 00:28:00,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00 WrapperNode [2024-11-03 00:28:00,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 00:28:00,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 00:28:00,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 00:28:00,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 00:28:00,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,504 INFO L138 Inliner]: procedures = 20, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2024-11-03 00:28:00,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 00:28:00,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 00:28:00,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 00:28:00,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 00:28:00,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,524 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2024-11-03 00:28:00,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 00:28:00,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 00:28:00,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 00:28:00,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 00:28:00,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (1/1) ... [2024-11-03 00:28:00,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:28:00,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:00,574 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) [2024-11-03 00:28:00,586 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 [2024-11-03 00:28:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 00:28:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 00:28:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-03 00:28:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-03 00:28:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-03 00:28:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-03 00:28:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-03 00:28:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-03 00:28:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-03 00:28:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-03 00:28:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 00:28:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 00:28:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-03 00:28:00,711 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 00:28:00,715 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 00:28:00,937 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-03 00:28:00,937 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 00:28:00,952 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 00:28:00,952 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 00:28:00,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:28:00 BoogieIcfgContainer [2024-11-03 00:28:00,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 00:28:00,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 00:28:00,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 00:28:00,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 00:28:00,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:28:00" (1/3) ... [2024-11-03 00:28:00,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2a11bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:28:00, skipping insertion in model container [2024-11-03 00:28:00,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:28:00" (2/3) ... [2024-11-03 00:28:00,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2a11bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:28:00, skipping insertion in model container [2024-11-03 00:28:00,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:28:00" (3/3) ... [2024-11-03 00:28:00,964 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries1.c [2024-11-03 00:28:00,977 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 00:28:00,977 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 00:28:01,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 00:28:01,031 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;@c39625f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 00:28:01,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 00:28:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 00:28:01,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:01,041 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:01,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:01,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:01,045 INFO L85 PathProgramCache]: Analyzing trace with hash -173200605, now seen corresponding path program 1 times [2024-11-03 00:28:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:01,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862665726] [2024-11-03 00:28:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:01,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:01,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:01,055 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) [2024-11-03 00:28:01,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-03 00:28:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:01,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 00:28:01,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 00:28:01,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 00:28:01,279 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862665726] [2024-11-03 00:28:01,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [862665726] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:01,279 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:01,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-03 00:28:01,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56662167] [2024-11-03 00:28:01,283 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:01,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 00:28:01,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:01,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 00:28:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 00:28:01,308 INFO L87 Difference]: Start difference. First operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 00:28:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:01,372 INFO L93 Difference]: Finished difference Result 73 states and 104 transitions. [2024-11-03 00:28:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 00:28:01,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-03 00:28:01,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:01,381 INFO L225 Difference]: With dead ends: 73 [2024-11-03 00:28:01,381 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 00:28:01,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-03 00:28:01,389 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:01,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 00:28:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 00:28:01,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 00:28:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2024-11-03 00:28:01,431 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 17 [2024-11-03 00:28:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:01,431 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2024-11-03 00:28:01,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-03 00:28:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2024-11-03 00:28:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-03 00:28:01,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:01,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:01,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-03 00:28:01,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:01,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:01,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:01,637 INFO L85 PathProgramCache]: Analyzing trace with hash -466603612, now seen corresponding path program 1 times [2024-11-03 00:28:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21945702] [2024-11-03 00:28:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:01,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:01,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:01,640 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) [2024-11-03 00:28:01,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-03 00:28:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:01,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 00:28:01,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 00:28:01,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 00:28:01,737 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:01,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21945702] [2024-11-03 00:28:01,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [21945702] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:01,738 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:01,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 00:28:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368015137] [2024-11-03 00:28:01,740 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:01,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 00:28:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 00:28:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 00:28:01,743 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 00:28:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:01,764 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2024-11-03 00:28:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-03 00:28:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:01,766 INFO L225 Difference]: With dead ends: 42 [2024-11-03 00:28:01,766 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 00:28:01,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-03 00:28:01,768 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:01,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:01,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 00:28:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 00:28:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 00:28:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2024-11-03 00:28:01,774 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 17 [2024-11-03 00:28:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:01,774 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2024-11-03 00:28:01,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 00:28:01,774 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2024-11-03 00:28:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-03 00:28:01,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:01,775 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:01,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-03 00:28:01,976 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 [2024-11-03 00:28:01,977 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:01,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -97449680, now seen corresponding path program 1 times [2024-11-03 00:28:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:01,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960459158] [2024-11-03 00:28:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:01,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:01,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:01,980 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) [2024-11-03 00:28:01,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-03 00:28:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:02,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 00:28:02,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 00:28:02,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 00:28:02,049 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:02,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960459158] [2024-11-03 00:28:02,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [960459158] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:02,049 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:02,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 00:28:02,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919384603] [2024-11-03 00:28:02,050 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:02,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 00:28:02,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:02,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 00:28:02,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 00:28:02,051 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 00:28:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:02,069 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2024-11-03 00:28:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 00:28:02,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-03 00:28:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:02,071 INFO L225 Difference]: With dead ends: 53 [2024-11-03 00:28:02,071 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 00:28:02,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 00:28:02,074 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 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 [2024-11-03 00:28:02,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 00:28:02,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 00:28:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 00:28:02,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2024-11-03 00:28:02,085 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 21 [2024-11-03 00:28:02,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:02,086 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2024-11-03 00:28:02,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-03 00:28:02,086 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2024-11-03 00:28:02,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-03 00:28:02,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:02,087 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:02,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-03 00:28:02,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:02,288 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:02,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1606193460, now seen corresponding path program 1 times [2024-11-03 00:28:02,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:02,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257482308] [2024-11-03 00:28:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:02,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:02,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:02,291 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) [2024-11-03 00:28:02,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-03 00:28:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:02,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:02,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 00:28:02,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 00:28:02,389 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:02,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257482308] [2024-11-03 00:28:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [257482308] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:02,389 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607563750] [2024-11-03 00:28:02,389 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:02,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:02,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:02,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:02,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:02,391 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 00:28:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:02,415 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2024-11-03 00:28:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:02,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-11-03 00:28:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:02,417 INFO L225 Difference]: With dead ends: 63 [2024-11-03 00:28:02,417 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 00:28:02,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:02,418 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:02,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:02,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 00:28:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-03 00:28:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 00:28:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-11-03 00:28:02,427 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 27 [2024-11-03 00:28:02,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:02,429 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-11-03 00:28:02,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-03 00:28:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-11-03 00:28:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-03 00:28:02,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:02,430 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:02,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-03 00:28:02,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:02,631 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:02,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1389600499, now seen corresponding path program 1 times [2024-11-03 00:28:02,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538623704] [2024-11-03 00:28:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:02,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:02,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:02,633 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) [2024-11-03 00:28:02,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-03 00:28:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:02,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:02,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 00:28:02,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-03 00:28:02,738 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:02,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538623704] [2024-11-03 00:28:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [538623704] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:02,738 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360588446] [2024-11-03 00:28:02,738 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:02,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:02,740 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 00:28:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:02,763 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2024-11-03 00:28:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-11-03 00:28:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:02,764 INFO L225 Difference]: With dead ends: 67 [2024-11-03 00:28:02,764 INFO L226 Difference]: Without dead ends: 38 [2024-11-03 00:28:02,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:02,765 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:02,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-03 00:28:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2024-11-03 00:28:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-03 00:28:02,768 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 33 [2024-11-03 00:28:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:02,769 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-03 00:28:02,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-03 00:28:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-03 00:28:02,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-03 00:28:02,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:02,770 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-03 00:28:02,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-03 00:28:02,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:02,971 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:02,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1645112148, now seen corresponding path program 1 times [2024-11-03 00:28:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:02,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235285496] [2024-11-03 00:28:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:02,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:02,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:02,973 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) [2024-11-03 00:28:02,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-03 00:28:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:03,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 00:28:03,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 00:28:03,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 00:28:03,076 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:03,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235285496] [2024-11-03 00:28:03,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1235285496] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:03,076 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:03,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 00:28:03,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328765860] [2024-11-03 00:28:03,076 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:03,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:03,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:03,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:03,078 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:03,103 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-11-03 00:28:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:03,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2024-11-03 00:28:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:03,104 INFO L225 Difference]: With dead ends: 51 [2024-11-03 00:28:03,104 INFO L226 Difference]: Without dead ends: 44 [2024-11-03 00:28:03,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:03,105 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:03,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 68 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-03 00:28:03,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-11-03 00:28:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-03 00:28:03,115 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 39 [2024-11-03 00:28:03,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:03,115 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-03 00:28:03,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-03 00:28:03,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-03 00:28:03,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:03,116 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-03 00:28:03,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-03 00:28:03,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:03,323 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:03,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1930899933, now seen corresponding path program 1 times [2024-11-03 00:28:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564705657] [2024-11-03 00:28:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:03,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:03,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:03,325 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) [2024-11-03 00:28:03,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-03 00:28:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:03,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:28:03,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 00:28:03,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 00:28:03,419 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:03,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564705657] [2024-11-03 00:28:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1564705657] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:03,419 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:03,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2024-11-03 00:28:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312822330] [2024-11-03 00:28:03,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:03,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:03,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:03,421 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:03,433 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-11-03 00:28:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:03,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-11-03 00:28:03,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:03,434 INFO L225 Difference]: With dead ends: 48 [2024-11-03 00:28:03,434 INFO L226 Difference]: Without dead ends: 42 [2024-11-03 00:28:03,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:03,435 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:03,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-03 00:28:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-03 00:28:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-03 00:28:03,438 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 41 [2024-11-03 00:28:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:03,439 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-03 00:28:03,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-03 00:28:03,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 00:28:03,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:03,440 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-03 00:28:03,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:03,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:03,644 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:03,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash 439812012, now seen corresponding path program 1 times [2024-11-03 00:28:03,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:03,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794735426] [2024-11-03 00:28:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:03,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:03,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:03,647 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) [2024-11-03 00:28:03,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-03 00:28:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:03,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 00:28:03,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 00:28:03,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:03,729 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 00:28:03,730 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:03,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794735426] [2024-11-03 00:28:03,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [794735426] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:28:03,730 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:28:03,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 00:28:03,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084464261] [2024-11-03 00:28:03,730 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:28:03,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:28:03,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:03,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:28:03,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:03,731 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:03,749 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2024-11-03 00:28:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:28:03,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2024-11-03 00:28:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:03,751 INFO L225 Difference]: With dead ends: 68 [2024-11-03 00:28:03,751 INFO L226 Difference]: Without dead ends: 50 [2024-11-03 00:28:03,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:28:03,754 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 9 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:03,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:28:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-03 00:28:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-03 00:28:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-03 00:28:03,758 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 49 [2024-11-03 00:28:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:03,758 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-03 00:28:03,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-03 00:28:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-03 00:28:03,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:03,759 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2024-11-03 00:28:03,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:03,963 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 [2024-11-03 00:28:03,964 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:03,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash 49769900, now seen corresponding path program 1 times [2024-11-03 00:28:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:03,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980729656] [2024-11-03 00:28:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:03,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:03,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:03,966 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) [2024-11-03 00:28:03,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-03 00:28:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:04,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 00:28:04,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 00:28:04,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:04,373 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-03 00:28:04,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2024-11-03 00:28:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 00:28:04,402 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980729656] [2024-11-03 00:28:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1980729656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:04,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:04,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2024-11-03 00:28:04,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039580644] [2024-11-03 00:28:04,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:04,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 00:28:04,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:04,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 00:28:04,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-03 00:28:04,404 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:04,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:04,766 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2024-11-03 00:28:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-03 00:28:04,767 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-03 00:28:04,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:04,768 INFO L225 Difference]: With dead ends: 117 [2024-11-03 00:28:04,768 INFO L226 Difference]: Without dead ends: 99 [2024-11-03 00:28:04,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2024-11-03 00:28:04,769 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 84 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:04,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 198 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-03 00:28:04,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 83. [2024-11-03 00:28:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 77 states have internal predecessors, (93), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2024-11-03 00:28:04,782 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 61 [2024-11-03 00:28:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:04,782 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2024-11-03 00:28:04,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2024-11-03 00:28:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-03 00:28:04,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:04,786 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2024-11-03 00:28:04,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:04,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:04,987 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:04,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash -971298454, now seen corresponding path program 1 times [2024-11-03 00:28:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363535881] [2024-11-03 00:28:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:04,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:04,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:04,989 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) [2024-11-03 00:28:04,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-03 00:28:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:05,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 00:28:05,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-03 00:28:05,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:05,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 00:28:05,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2024-11-03 00:28:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-03 00:28:05,351 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363535881] [2024-11-03 00:28:05,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [363535881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:05,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-03 00:28:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146980096] [2024-11-03 00:28:05,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:05,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 00:28:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 00:28:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-03 00:28:05,353 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:05,708 INFO L93 Difference]: Finished difference Result 158 states and 196 transitions. [2024-11-03 00:28:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 00:28:05,708 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-03 00:28:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:05,709 INFO L225 Difference]: With dead ends: 158 [2024-11-03 00:28:05,709 INFO L226 Difference]: Without dead ends: 100 [2024-11-03 00:28:05,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2024-11-03 00:28:05,711 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 54 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:05,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 252 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-03 00:28:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2024-11-03 00:28:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 88 states have internal predecessors, (109), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2024-11-03 00:28:05,727 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 61 [2024-11-03 00:28:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:05,727 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2024-11-03 00:28:05,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2024-11-03 00:28:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-03 00:28:05,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:05,728 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2024-11-03 00:28:05,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-03 00:28:05,928 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 [2024-11-03 00:28:05,929 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:05,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1972997934, now seen corresponding path program 2 times [2024-11-03 00:28:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432409274] [2024-11-03 00:28:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:05,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:05,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:05,931 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) [2024-11-03 00:28:05,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-03 00:28:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:06,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-03 00:28:06,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 00:28:06,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:06,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 00:28:06,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2024-11-03 00:28:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 00:28:06,534 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:06,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432409274] [2024-11-03 00:28:06,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [432409274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:06,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:06,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-11-03 00:28:06,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310610747] [2024-11-03 00:28:06,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:06,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-03 00:28:06,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-03 00:28:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-03 00:28:06,536 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:07,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:07,032 INFO L93 Difference]: Finished difference Result 273 states and 353 transitions. [2024-11-03 00:28:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-03 00:28:07,033 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-03 00:28:07,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:07,034 INFO L225 Difference]: With dead ends: 273 [2024-11-03 00:28:07,034 INFO L226 Difference]: Without dead ends: 210 [2024-11-03 00:28:07,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2024-11-03 00:28:07,035 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 145 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:07,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 417 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 00:28:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-03 00:28:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 182. [2024-11-03 00:28:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 176 states have (on average 1.2840909090909092) internal successors, (226), 176 states have internal predecessors, (226), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 234 transitions. [2024-11-03 00:28:07,050 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 234 transitions. Word has length 61 [2024-11-03 00:28:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:07,050 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 234 transitions. [2024-11-03 00:28:07,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 234 transitions. [2024-11-03 00:28:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-03 00:28:07,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:07,051 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2024-11-03 00:28:07,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-03 00:28:07,252 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 [2024-11-03 00:28:07,252 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:07,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash 365123566, now seen corresponding path program 3 times [2024-11-03 00:28:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:07,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637267146] [2024-11-03 00:28:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:07,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:07,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:07,254 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) [2024-11-03 00:28:07,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-03 00:28:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:07,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-03 00:28:07,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 00:28:07,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:07,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 00:28:07,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2024-11-03 00:28:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-03 00:28:07,634 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:07,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637267146] [2024-11-03 00:28:07,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [637267146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:07,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:07,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-03 00:28:07,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882741281] [2024-11-03 00:28:07,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:07,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 00:28:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:07,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 00:28:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-03 00:28:07,636 INFO L87 Difference]: Start difference. First operand 182 states and 234 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:07,810 INFO L93 Difference]: Finished difference Result 273 states and 351 transitions. [2024-11-03 00:28:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 00:28:07,811 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2024-11-03 00:28:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:07,812 INFO L225 Difference]: With dead ends: 273 [2024-11-03 00:28:07,812 INFO L226 Difference]: Without dead ends: 224 [2024-11-03 00:28:07,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-03 00:28:07,813 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 44 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:07,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 282 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:07,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-03 00:28:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 200. [2024-11-03 00:28:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.2783505154639174) internal successors, (248), 194 states have internal predecessors, (248), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 256 transitions. [2024-11-03 00:28:07,835 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 256 transitions. Word has length 61 [2024-11-03 00:28:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:07,835 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 256 transitions. [2024-11-03 00:28:07,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:07,835 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 256 transitions. [2024-11-03 00:28:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-03 00:28:07,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:07,838 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 00:28:07,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-03 00:28:08,039 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 [2024-11-03 00:28:08,039 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:08,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1509712995, now seen corresponding path program 4 times [2024-11-03 00:28:08,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:08,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067561518] [2024-11-03 00:28:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:08,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:08,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:08,041 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) [2024-11-03 00:28:08,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-03 00:28:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:08,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 00:28:08,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-03 00:28:08,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-03 00:28:08,242 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067561518] [2024-11-03 00:28:08,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1067561518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:08,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:08,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2024-11-03 00:28:08,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509065282] [2024-11-03 00:28:08,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:08,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-03 00:28:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:08,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-03 00:28:08,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-03 00:28:08,244 INFO L87 Difference]: Start difference. First operand 200 states and 256 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:08,419 INFO L93 Difference]: Finished difference Result 777 states and 1047 transitions. [2024-11-03 00:28:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 00:28:08,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2024-11-03 00:28:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:08,423 INFO L225 Difference]: With dead ends: 777 [2024-11-03 00:28:08,423 INFO L226 Difference]: Without dead ends: 648 [2024-11-03 00:28:08,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-11-03 00:28:08,425 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 26 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:08,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 251 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:08,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-03 00:28:08,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 485. [2024-11-03 00:28:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 479 states have (on average 1.3215031315240084) internal successors, (633), 479 states have internal predecessors, (633), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:08,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 641 transitions. [2024-11-03 00:28:08,460 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 641 transitions. Word has length 64 [2024-11-03 00:28:08,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:08,460 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 641 transitions. [2024-11-03 00:28:08,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:08,461 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 641 transitions. [2024-11-03 00:28:08,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-03 00:28:08,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:08,462 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 4, 4, 4, 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] [2024-11-03 00:28:08,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:08,662 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 [2024-11-03 00:28:08,663 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:08,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:08,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2083808338, now seen corresponding path program 5 times [2024-11-03 00:28:08,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:08,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370658787] [2024-11-03 00:28:08,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:08,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:08,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:08,665 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) [2024-11-03 00:28:08,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-03 00:28:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:08,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 00:28:08,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 00:28:08,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 00:28:08,864 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:08,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370658787] [2024-11-03 00:28:08,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1370658787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:08,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:08,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 00:28:08,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053265985] [2024-11-03 00:28:08,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:08,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 00:28:08,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:08,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 00:28:08,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 00:28:08,866 INFO L87 Difference]: Start difference. First operand 485 states and 641 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:08,956 INFO L93 Difference]: Finished difference Result 606 states and 803 transitions. [2024-11-03 00:28:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 00:28:08,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 73 [2024-11-03 00:28:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:08,959 INFO L225 Difference]: With dead ends: 606 [2024-11-03 00:28:08,959 INFO L226 Difference]: Without dead ends: 599 [2024-11-03 00:28:08,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-03 00:28:08,960 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 27 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:08,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 148 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 00:28:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-03 00:28:09,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2024-11-03 00:28:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 593 states have (on average 1.3220910623946036) internal successors, (784), 593 states have internal predecessors, (784), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 792 transitions. [2024-11-03 00:28:09,015 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 792 transitions. Word has length 73 [2024-11-03 00:28:09,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:09,015 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 792 transitions. [2024-11-03 00:28:09,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:09,015 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 792 transitions. [2024-11-03 00:28:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:28:09,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:09,017 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 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] [2024-11-03 00:28:09,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-03 00:28:09,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:09,221 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:09,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:09,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1620371308, now seen corresponding path program 6 times [2024-11-03 00:28:09,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:09,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019725835] [2024-11-03 00:28:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:09,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:09,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:09,223 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) [2024-11-03 00:28:09,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-03 00:28:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:09,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 00:28:09,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 101 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-03 00:28:09,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:09,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 00:28:09,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2024-11-03 00:28:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 101 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-03 00:28:09,859 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:09,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019725835] [2024-11-03 00:28:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1019725835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:09,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:09,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-03 00:28:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100490705] [2024-11-03 00:28:09,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:09,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 00:28:09,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:09,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 00:28:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-11-03 00:28:09,861 INFO L87 Difference]: Start difference. First operand 599 states and 792 transitions. Second operand has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:10,756 INFO L93 Difference]: Finished difference Result 1470 states and 1955 transitions. [2024-11-03 00:28:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-03 00:28:10,758 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 00:28:10,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:10,762 INFO L225 Difference]: With dead ends: 1470 [2024-11-03 00:28:10,762 INFO L226 Difference]: Without dead ends: 1277 [2024-11-03 00:28:10,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=282, Invalid=1524, Unknown=0, NotChecked=0, Total=1806 [2024-11-03 00:28:10,765 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 104 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:10,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 606 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 00:28:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2024-11-03 00:28:10,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 863. [2024-11-03 00:28:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 857 states have (on average 1.3313885647607935) internal successors, (1141), 857 states have internal predecessors, (1141), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1149 transitions. [2024-11-03 00:28:10,827 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1149 transitions. Word has length 107 [2024-11-03 00:28:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:10,827 INFO L471 AbstractCegarLoop]: Abstraction has 863 states and 1149 transitions. [2024-11-03 00:28:10,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1149 transitions. [2024-11-03 00:28:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:28:10,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:10,830 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 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] [2024-11-03 00:28:10,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:11,031 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 [2024-11-03 00:28:11,031 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:11,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:11,032 INFO L85 PathProgramCache]: Analyzing trace with hash -443850576, now seen corresponding path program 7 times [2024-11-03 00:28:11,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:11,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789346675] [2024-11-03 00:28:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:11,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:11,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:11,034 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) [2024-11-03 00:28:11,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-03 00:28:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:11,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-03 00:28:11,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 237 proven. 109 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-03 00:28:11,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:11,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 00:28:11,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2024-11-03 00:28:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 237 proven. 109 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-03 00:28:11,597 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:11,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789346675] [2024-11-03 00:28:11,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [789346675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:11,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:11,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2024-11-03 00:28:11,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059627126] [2024-11-03 00:28:11,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:11,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 00:28:11,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:11,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 00:28:11,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-03 00:28:11,599 INFO L87 Difference]: Start difference. First operand 863 states and 1149 transitions. Second operand has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:12,169 INFO L93 Difference]: Finished difference Result 1537 states and 2047 transitions. [2024-11-03 00:28:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-03 00:28:12,170 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 00:28:12,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:12,175 INFO L225 Difference]: With dead ends: 1537 [2024-11-03 00:28:12,175 INFO L226 Difference]: Without dead ends: 1369 [2024-11-03 00:28:12,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-11-03 00:28:12,177 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 78 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:12,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 394 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 00:28:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2024-11-03 00:28:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1254. [2024-11-03 00:28:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1248 states have (on average 1.3221153846153846) internal successors, (1650), 1248 states have internal predecessors, (1650), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 00:28:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1658 transitions. [2024-11-03 00:28:12,280 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1658 transitions. Word has length 107 [2024-11-03 00:28:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:12,282 INFO L471 AbstractCegarLoop]: Abstraction has 1254 states and 1658 transitions. [2024-11-03 00:28:12,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:28:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1658 transitions. [2024-11-03 00:28:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:28:12,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:12,284 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 4, 4, 4, 4, 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] [2024-11-03 00:28:12,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-03 00:28:12,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:12,485 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:12,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:12,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1767806192, now seen corresponding path program 8 times [2024-11-03 00:28:12,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:12,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908106729] [2024-11-03 00:28:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:12,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:12,487 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) [2024-11-03 00:28:12,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-03 00:28:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:12,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-03 00:28:12,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 225 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-03 00:28:13,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 179 proven. 233 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-03 00:28:14,259 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:14,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908106729] [2024-11-03 00:28:14,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [908106729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:14,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:14,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2024-11-03 00:28:14,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917127079] [2024-11-03 00:28:14,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:14,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-03 00:28:14,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:14,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-03 00:28:14,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 00:28:14,261 INFO L87 Difference]: Start difference. First operand 1254 states and 1658 transitions. Second operand has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:28:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:26,753 INFO L93 Difference]: Finished difference Result 7564 states and 10073 transitions. [2024-11-03 00:28:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2024-11-03 00:28:26,754 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2024-11-03 00:28:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:26,774 INFO L225 Difference]: With dead ends: 7564 [2024-11-03 00:28:26,774 INFO L226 Difference]: Without dead ends: 7211 [2024-11-03 00:28:26,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10808 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3344, Invalid=27456, Unknown=0, NotChecked=0, Total=30800 [2024-11-03 00:28:26,783 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 322 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 4860 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 4873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:26,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1436 Invalid, 4873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4860 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-03 00:28:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7211 states. [2024-11-03 00:28:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7211 to 4665. [2024-11-03 00:28:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4665 states, 4655 states have (on average 1.3319011815252417) internal successors, (6200), 4655 states have internal predecessors, (6200), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 00:28:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4665 states to 4665 states and 6221 transitions. [2024-11-03 00:28:27,348 INFO L78 Accepts]: Start accepts. Automaton has 4665 states and 6221 transitions. Word has length 107 [2024-11-03 00:28:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:27,348 INFO L471 AbstractCegarLoop]: Abstraction has 4665 states and 6221 transitions. [2024-11-03 00:28:27,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:28:27,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4665 states and 6221 transitions. [2024-11-03 00:28:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:28:27,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:27,356 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 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] [2024-11-03 00:28:27,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-03 00:28:27,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:27,557 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:27,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2009293164, now seen corresponding path program 9 times [2024-11-03 00:28:27,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:27,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378483985] [2024-11-03 00:28:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:27,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:27,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:27,560 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) [2024-11-03 00:28:27,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-03 00:28:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:27,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-03 00:28:27,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 242 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-03 00:28:28,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 233 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-03 00:28:28,676 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378483985] [2024-11-03 00:28:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1378483985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:28,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:28,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 29 [2024-11-03 00:28:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794136614] [2024-11-03 00:28:28,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:28,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-03 00:28:28,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-03 00:28:28,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2024-11-03 00:28:28,678 INFO L87 Difference]: Start difference. First operand 4665 states and 6221 transitions. Second operand has 29 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 29 states have internal predecessors, (115), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:28:30,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:30,986 INFO L93 Difference]: Finished difference Result 7320 states and 9751 transitions. [2024-11-03 00:28:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-03 00:28:30,987 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 29 states have internal predecessors, (115), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2024-11-03 00:28:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:31,005 INFO L225 Difference]: With dead ends: 7320 [2024-11-03 00:28:31,005 INFO L226 Difference]: Without dead ends: 6062 [2024-11-03 00:28:31,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=1643, Unknown=0, NotChecked=0, Total=1892 [2024-11-03 00:28:31,009 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 109 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:31,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 885 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-03 00:28:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6062 states. [2024-11-03 00:28:31,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6062 to 5061. [2024-11-03 00:28:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5061 states, 5051 states have (on average 1.3320134626806572) internal successors, (6728), 5051 states have internal predecessors, (6728), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 00:28:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 6749 transitions. [2024-11-03 00:28:31,642 INFO L78 Accepts]: Start accepts. Automaton has 5061 states and 6749 transitions. Word has length 107 [2024-11-03 00:28:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:31,643 INFO L471 AbstractCegarLoop]: Abstraction has 5061 states and 6749 transitions. [2024-11-03 00:28:31,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 29 states have internal predecessors, (115), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:28:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5061 states and 6749 transitions. [2024-11-03 00:28:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:28:31,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:31,651 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 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] [2024-11-03 00:28:31,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-03 00:28:31,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:31,852 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:31,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:31,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1718051888, now seen corresponding path program 10 times [2024-11-03 00:28:31,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:31,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876784297] [2024-11-03 00:28:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:31,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:31,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:31,854 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) [2024-11-03 00:28:31,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-03 00:28:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:31,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-03 00:28:31,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 92 proven. 307 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-03 00:28:32,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 94 proven. 296 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-03 00:28:33,716 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:33,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876784297] [2024-11-03 00:28:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [876784297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:33,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:33,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2024-11-03 00:28:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460456849] [2024-11-03 00:28:33,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:33,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-03 00:28:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-03 00:28:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2024-11-03 00:28:33,718 INFO L87 Difference]: Start difference. First operand 5061 states and 6749 transitions. Second operand has 31 states, 31 states have (on average 3.5483870967741935) internal successors, (110), 31 states have internal predecessors, (110), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:28:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:40,297 INFO L93 Difference]: Finished difference Result 9751 states and 13003 transitions. [2024-11-03 00:28:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-03 00:28:40,298 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.5483870967741935) internal successors, (110), 31 states have internal predecessors, (110), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2024-11-03 00:28:40,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:40,334 INFO L225 Difference]: With dead ends: 9751 [2024-11-03 00:28:40,334 INFO L226 Difference]: Without dead ends: 9260 [2024-11-03 00:28:40,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1345, Invalid=6487, Unknown=0, NotChecked=0, Total=7832 [2024-11-03 00:28:40,338 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 105 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:40,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 764 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-03 00:28:40,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9260 states. [2024-11-03 00:28:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9260 to 7969. [2024-11-03 00:28:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7969 states, 7959 states have (on average 1.3265485613770573) internal successors, (10558), 7959 states have internal predecessors, (10558), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 00:28:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7969 states to 7969 states and 10579 transitions. [2024-11-03 00:28:41,541 INFO L78 Accepts]: Start accepts. Automaton has 7969 states and 10579 transitions. Word has length 107 [2024-11-03 00:28:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:41,541 INFO L471 AbstractCegarLoop]: Abstraction has 7969 states and 10579 transitions. [2024-11-03 00:28:41,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.5483870967741935) internal successors, (110), 31 states have internal predecessors, (110), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:28:41,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7969 states and 10579 transitions. [2024-11-03 00:28:41,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:28:41,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:41,555 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 4, 4, 4, 4, 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] [2024-11-03 00:28:41,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-03 00:28:41,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:41,756 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:41,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:41,756 INFO L85 PathProgramCache]: Analyzing trace with hash 696983534, now seen corresponding path program 11 times [2024-11-03 00:28:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:41,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303473166] [2024-11-03 00:28:41,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:41,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:41,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:41,758 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) [2024-11-03 00:28:41,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-03 00:28:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:41,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-03 00:28:41,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 407 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-03 00:28:42,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 14 proven. 391 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-03 00:28:43,942 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:43,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303473166] [2024-11-03 00:28:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [303473166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:43,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:43,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 35 [2024-11-03 00:28:43,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611743457] [2024-11-03 00:28:43,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:43,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-03 00:28:43,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:43,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-03 00:28:43,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 00:28:43,945 INFO L87 Difference]: Start difference. First operand 7969 states and 10579 transitions. Second operand has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:28:54,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:28:54,679 INFO L93 Difference]: Finished difference Result 20569 states and 27400 transitions. [2024-11-03 00:28:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-03 00:28:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2024-11-03 00:28:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:28:54,720 INFO L225 Difference]: With dead ends: 20569 [2024-11-03 00:28:54,720 INFO L226 Difference]: Without dead ends: 19368 [2024-11-03 00:28:54,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3575 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2305, Invalid=10805, Unknown=0, NotChecked=0, Total=13110 [2024-11-03 00:28:54,728 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 179 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-03 00:28:54,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1208 Invalid, 3365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-03 00:28:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19368 states. [2024-11-03 00:28:57,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19368 to 17187. [2024-11-03 00:28:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17187 states, 17177 states have (on average 1.3302090004075218) internal successors, (22849), 17177 states have internal predecessors, (22849), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 00:28:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17187 states to 17187 states and 22870 transitions. [2024-11-03 00:28:57,719 INFO L78 Accepts]: Start accepts. Automaton has 17187 states and 22870 transitions. Word has length 107 [2024-11-03 00:28:57,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:28:57,719 INFO L471 AbstractCegarLoop]: Abstraction has 17187 states and 22870 transitions. [2024-11-03 00:28:57,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:28:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 17187 states and 22870 transitions. [2024-11-03 00:28:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:28:57,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:28:57,742 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 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] [2024-11-03 00:28:57,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-03 00:28:57,942 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 [2024-11-03 00:28:57,942 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:28:57,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:28:57,943 INFO L85 PathProgramCache]: Analyzing trace with hash -517332118, now seen corresponding path program 12 times [2024-11-03 00:28:57,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:28:57,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74968377] [2024-11-03 00:28:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:28:57,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:28:57,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:28:57,944 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) [2024-11-03 00:28:57,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-03 00:28:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:28:58,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-03 00:28:58,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:28:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 229 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-03 00:28:58,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:28:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 200 proven. 207 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-03 00:28:59,802 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:28:59,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74968377] [2024-11-03 00:28:59,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [74968377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:28:59,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:28:59,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2024-11-03 00:28:59,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049563260] [2024-11-03 00:28:59,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:28:59,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-03 00:28:59,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:28:59,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-03 00:28:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 00:28:59,804 INFO L87 Difference]: Start difference. First operand 17187 states and 22870 transitions. Second operand has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:29:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:29:09,965 INFO L93 Difference]: Finished difference Result 23872 states and 31740 transitions. [2024-11-03 00:29:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-03 00:29:09,966 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2024-11-03 00:29:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:29:10,004 INFO L225 Difference]: With dead ends: 23872 [2024-11-03 00:29:10,004 INFO L226 Difference]: Without dead ends: 21579 [2024-11-03 00:29:10,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3705 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2194, Invalid=10916, Unknown=0, NotChecked=0, Total=13110 [2024-11-03 00:29:10,013 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 182 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-03 00:29:10,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 894 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-03 00:29:10,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21579 states. [2024-11-03 00:29:13,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21579 to 18324. [2024-11-03 00:29:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18324 states, 18314 states have (on average 1.3282734520039314) internal successors, (24326), 18314 states have internal predecessors, (24326), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 00:29:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18324 states to 18324 states and 24347 transitions. [2024-11-03 00:29:13,156 INFO L78 Accepts]: Start accepts. Automaton has 18324 states and 24347 transitions. Word has length 107 [2024-11-03 00:29:13,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:29:13,156 INFO L471 AbstractCegarLoop]: Abstraction has 18324 states and 24347 transitions. [2024-11-03 00:29:13,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.6363636363636362) internal successors, (120), 33 states have internal predecessors, (120), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:29:13,157 INFO L276 IsEmpty]: Start isEmpty. Operand 18324 states and 24347 transitions. [2024-11-03 00:29:13,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:29:13,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:29:13,178 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 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] [2024-11-03 00:29:13,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-03 00:29:13,378 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 [2024-11-03 00:29:13,378 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:29:13,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:29:13,379 INFO L85 PathProgramCache]: Analyzing trace with hash 642590636, now seen corresponding path program 13 times [2024-11-03 00:29:13,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:29:13,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891924524] [2024-11-03 00:29:13,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:29:13,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:29:13,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:29:13,380 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) [2024-11-03 00:29:13,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-03 00:29:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:29:13,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-03 00:29:13,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:29:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 231 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-03 00:29:13,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:29:13,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-03 00:29:13,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2024-11-03 00:29:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 164 proven. 231 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-03 00:29:14,011 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:29:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891924524] [2024-11-03 00:29:14,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [891924524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:29:14,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:29:14,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-03 00:29:14,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351820153] [2024-11-03 00:29:14,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:29:14,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 00:29:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:29:14,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 00:29:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-11-03 00:29:14,013 INFO L87 Difference]: Start difference. First operand 18324 states and 24347 transitions. Second operand has 24 states, 24 states have (on average 4.125) internal successors, (99), 24 states have internal predecessors, (99), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:29:19,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:29:19,750 INFO L93 Difference]: Finished difference Result 33826 states and 45038 transitions. [2024-11-03 00:29:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-03 00:29:19,751 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.125) internal successors, (99), 24 states have internal predecessors, (99), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 107 [2024-11-03 00:29:19,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:29:19,811 INFO L225 Difference]: With dead ends: 33826 [2024-11-03 00:29:19,812 INFO L226 Difference]: Without dead ends: 29119 [2024-11-03 00:29:19,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=316, Invalid=1664, Unknown=0, NotChecked=0, Total=1980 [2024-11-03 00:29:19,823 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 124 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 00:29:19,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 448 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 00:29:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29119 states. [2024-11-03 00:29:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29119 to 19916. [2024-11-03 00:29:23,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19916 states, 19906 states have (on average 1.3282929769918617) internal successors, (26441), 19906 states have internal predecessors, (26441), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 00:29:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19916 states to 19916 states and 26462 transitions. [2024-11-03 00:29:23,653 INFO L78 Accepts]: Start accepts. Automaton has 19916 states and 26462 transitions. Word has length 107 [2024-11-03 00:29:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:29:23,654 INFO L471 AbstractCegarLoop]: Abstraction has 19916 states and 26462 transitions. [2024-11-03 00:29:23,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.125) internal successors, (99), 24 states have internal predecessors, (99), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 00:29:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 19916 states and 26462 transitions. [2024-11-03 00:29:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:29:23,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:29:23,674 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 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] [2024-11-03 00:29:23,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-03 00:29:23,874 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 [2024-11-03 00:29:23,875 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:29:23,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:29:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash 861445354, now seen corresponding path program 14 times [2024-11-03 00:29:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:29:23,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099236202] [2024-11-03 00:29:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:29:23,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:29:23,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:29:23,877 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) [2024-11-03 00:29:23,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-03 00:29:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:29:24,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-03 00:29:24,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:29:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 108 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-03 00:29:24,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:29:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 244 proven. 99 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-03 00:29:24,695 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:29:24,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099236202] [2024-11-03 00:29:24,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2099236202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:29:24,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:29:24,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2024-11-03 00:29:24,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104074007] [2024-11-03 00:29:24,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:29:24,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-03 00:29:24,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:29:24,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-03 00:29:24,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-03 00:29:24,697 INFO L87 Difference]: Start difference. First operand 19916 states and 26462 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:29:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:29:28,866 INFO L93 Difference]: Finished difference Result 20630 states and 27417 transitions. [2024-11-03 00:29:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-03 00:29:28,867 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2024-11-03 00:29:28,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:29:28,899 INFO L225 Difference]: With dead ends: 20630 [2024-11-03 00:29:28,899 INFO L226 Difference]: Without dead ends: 19676 [2024-11-03 00:29:28,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 00:29:28,906 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 81 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 00:29:28,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 689 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 00:29:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19676 states. [2024-11-03 00:29:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19676 to 19469. [2024-11-03 00:29:32,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19469 states, 19459 states have (on average 1.328125802970348) internal successors, (25844), 19459 states have internal predecessors, (25844), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 00:29:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19469 states to 19469 states and 25865 transitions. [2024-11-03 00:29:32,438 INFO L78 Accepts]: Start accepts. Automaton has 19469 states and 25865 transitions. Word has length 107 [2024-11-03 00:29:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:29:32,438 INFO L471 AbstractCegarLoop]: Abstraction has 19469 states and 25865 transitions. [2024-11-03 00:29:32,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-03 00:29:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 19469 states and 25865 transitions. [2024-11-03 00:29:32,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 00:29:32,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:29:32,456 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 9, 7, 4, 4, 4, 4, 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] [2024-11-03 00:29:32,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-03 00:29:32,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:29:32,657 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:29:32,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:29:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1679092946, now seen corresponding path program 15 times [2024-11-03 00:29:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:29:32,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412161186] [2024-11-03 00:29:32,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:29:32,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-03 00:29:32,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:29:32,659 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) [2024-11-03 00:29:32,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-03 00:29:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:29:32,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-03 00:29:32,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:29:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 212 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-03 00:29:33,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:29:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 187 proven. 203 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-03 00:29:34,356 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:29:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412161186] [2024-11-03 00:29:34,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [412161186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:29:34,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:29:34,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 29 [2024-11-03 00:29:34,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225688157] [2024-11-03 00:29:34,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:29:34,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-03 00:29:34,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:29:34,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-03 00:29:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2024-11-03 00:29:34,358 INFO L87 Difference]: Start difference. First operand 19469 states and 25865 transitions. Second operand has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 states have internal predecessors, (110), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)