/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 Internal_SMTInterpol -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 00:39:24,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 00:39:24,486 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 00:39:24,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 00:39:24,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 00:39:24,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 00:39:24,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 00:39:24,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 00:39:24,522 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 00:39:24,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 00:39:24,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 00:39:24,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 00:39:24,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 00:39:24,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 00:39:24,524 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 00:39:24,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 00:39:24,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 00:39:24,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 00:39:24,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 00:39:24,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 00:39:24,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 00:39:24,530 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 00:39:24,530 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 00:39:24,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 00:39:24,531 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 00:39:24,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 00:39:24,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 00:39:24,531 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 00:39:24,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 00:39:24,531 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 00:39:24,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 00:39:24,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 00:39:24,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 00:39:24,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 00:39:24,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 00:39:24,533 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 00:39:24,533 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 00:39:24,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 00:39:24,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 00:39:24,533 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 00:39:24,533 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 00:39:24,534 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 00:39:24,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol [2024-11-01 00:39:24,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 00:39:24,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 00:39:24,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 00:39:24,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 00:39:24,849 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 00:39:24,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2024-11-01 00:39:26,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 00:39:26,259 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 00:39:26,260 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2024-11-01 00:39:26,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b648a77/c19bc179e8b04877827247b7280be558/FLAGa1227c32f [2024-11-01 00:39:26,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b648a77/c19bc179e8b04877827247b7280be558 [2024-11-01 00:39:26,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 00:39:26,608 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 00:39:26,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 00:39:26,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 00:39:26,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 00:39:26,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 12:39:26" (1/1) ... [2024-11-01 00:39:26,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d1b317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:26, skipping insertion in model container [2024-11-01 00:39:26,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 12:39:26" (1/1) ... [2024-11-01 00:39:26,649 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 00:39:26,857 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c[1279,1292] [2024-11-01 00:39:27,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 00:39:27,088 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 00:39:27,107 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c[1279,1292] [2024-11-01 00:39:27,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 00:39:27,209 INFO L204 MainTranslator]: Completed translation [2024-11-01 00:39:27,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27 WrapperNode [2024-11-01 00:39:27,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 00:39:27,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 00:39:27,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 00:39:27,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 00:39:27,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,273 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 639 [2024-11-01 00:39:27,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 00:39:27,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 00:39:27,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 00:39:27,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 00:39:27,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,304 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-01 00:39:27,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 00:39:27,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 00:39:27,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 00:39:27,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 00:39:27,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (1/1) ... [2024-11-01 00:39:27,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 00:39:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 00:39:27,366 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) [2024-11-01 00:39:27,374 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 [2024-11-01 00:39:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 00:39:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 00:39:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 00:39:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 00:39:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 00:39:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 00:39:27,563 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 00:39:27,569 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 00:39:28,055 INFO L? ?]: Removed 198 outVars from TransFormulas that were not future-live. [2024-11-01 00:39:28,056 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 00:39:28,064 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 00:39:28,065 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 00:39:28,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 12:39:28 BoogieIcfgContainer [2024-11-01 00:39:28,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 00:39:28,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 00:39:28,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 00:39:28,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 00:39:28,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 12:39:26" (1/3) ... [2024-11-01 00:39:28,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f85583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 12:39:28, skipping insertion in model container [2024-11-01 00:39:28,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 12:39:27" (2/3) ... [2024-11-01 00:39:28,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f85583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 12:39:28, skipping insertion in model container [2024-11-01 00:39:28,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 12:39:28" (3/3) ... [2024-11-01 00:39:28,071 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2024-11-01 00:39:28,082 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 00:39:28,082 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 00:39:28,121 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 00:39:28,125 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;@5134e224, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 00:39:28,126 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 00:39:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-01 00:39:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 00:39:28,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 00:39:28,135 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 00:39:28,135 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 00:39:28,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 00:39:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-01 00:39:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 00:39:28,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352015580] [2024-11-01 00:39:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 00:39:28,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-01 00:39:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 00:39:28,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 00:39:28,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 00:39:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 00:39:28,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 00:39:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-01 00:39:28,715 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 00:39:28,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352015580] [2024-11-01 00:39:28,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [352015580] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-01 00:39:28,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-01 00:39:28,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-01 00:39:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804042640] [2024-11-01 00:39:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-01 00:39:28,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 00:39:28,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 00:39:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 00:39:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 00:39:28,739 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-01 00:39:28,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 00:39:28,750 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-01 00:39:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 00:39:28,751 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-01 00:39:28,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 00:39:28,755 INFO L225 Difference]: With dead ends: 35 [2024-11-01 00:39:28,755 INFO L226 Difference]: Without dead ends: 17 [2024-11-01 00:39:28,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 00:39:28,759 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 00:39:28,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 00:39:28,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-01 00:39:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-01 00:39:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-01 00:39:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-01 00:39:28,784 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-01 00:39:28,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 00:39:28,785 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-01 00:39:28,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-01 00:39:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-01 00:39:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 00:39:28,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 00:39:28,786 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 00:39:28,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-01 00:39:28,787 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 00:39:28,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 00:39:28,787 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-01 00:39:28,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 00:39:28,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926049262] [2024-11-01 00:39:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 00:39:28,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms