/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-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d128_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 04:39:22,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 04:39:22,323 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 04:39:22,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 04:39:22,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 04:39:22,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 04:39:22,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 04:39:22,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 04:39:22,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 04:39:22,365 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 04:39:22,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 04:39:22,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 04:39:22,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 04:39:22,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 04:39:22,368 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 04:39:22,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 04:39:22,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 04:39:22,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 04:39:22,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 04:39:22,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 04:39:22,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 04:39:22,371 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 04:39:22,371 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 04:39:22,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 04:39:22,372 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 04:39:22,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 04:39:22,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 04:39:22,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 04:39:22,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 04:39:22,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 04:39:22,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 04:39:22,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 04:39:22,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 04:39:22,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 04:39:22,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 04:39:22,375 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 04:39:22,375 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 04:39:22,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 04:39:22,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 04:39:22,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 04:39:22,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 04:39:22,377 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 04:39:22,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:39:22,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 04:39:22,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 04:39:22,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 04:39:22,688 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 04:39:22,689 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 04:39:22,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d128_e0.c [2024-11-01 04:39:24,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 04:39:24,605 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 04:39:24,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d128_e0.c [2024-11-01 04:39:24,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa8a4674/be302eccd7574ab8aa316302feb3c09f/FLAGac1d1df04 [2024-11-01 04:39:24,646 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa8a4674/be302eccd7574ab8aa316302feb3c09f [2024-11-01 04:39:24,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 04:39:24,649 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 04:39:24,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 04:39:24,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 04:39:24,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 04:39:24,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 04:39:24" (1/1) ... [2024-11-01 04:39:24,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9833d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:24, skipping insertion in model container [2024-11-01 04:39:24,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 04:39:24" (1/1) ... [2024-11-01 04:39:24,739 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 04:39:25,016 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_w8_d128_e0.c[1280,1293] [2024-11-01 04:39:25,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 04:39:25,671 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 04:39:25,681 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_w8_d128_e0.c[1280,1293] [2024-11-01 04:39:25,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 04:39:25,954 INFO L204 MainTranslator]: Completed translation [2024-11-01 04:39:25,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25 WrapperNode [2024-11-01 04:39:25,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 04:39:25,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 04:39:25,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 04:39:25,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 04:39:25,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,240 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4725 [2024-11-01 04:39:26,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 04:39:26,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 04:39:26,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 04:39:26,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 04:39:26,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,283 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,354 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 04:39:26,355 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 04:39:26,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 04:39:26,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 04:39:26,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 04:39:26,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (1/1) ... [2024-11-01 04:39:26,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 04:39:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:39:26,591 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 04:39:26,600 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 04:39:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 04:39:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 04:39:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 04:39:26,632 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 04:39:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 04:39:26,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 04:39:27,312 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 04:39:27,314 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 04:39:31,883 INFO L? ?]: Removed 1281 outVars from TransFormulas that were not future-live. [2024-11-01 04:39:31,883 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 04:39:31,894 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 04:39:31,894 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 04:39:31,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 04:39:31 BoogieIcfgContainer [2024-11-01 04:39:31,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 04:39:31,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 04:39:31,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 04:39:31,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 04:39:31,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 04:39:24" (1/3) ... [2024-11-01 04:39:31,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d08e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 04:39:31, skipping insertion in model container [2024-11-01 04:39:31,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 04:39:25" (2/3) ... [2024-11-01 04:39:31,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d08e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 04:39:31, skipping insertion in model container [2024-11-01 04:39:31,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 04:39:31" (3/3) ... [2024-11-01 04:39:31,903 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w8_d128_e0.c [2024-11-01 04:39:31,917 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 04:39:31,918 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 04:39:31,971 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 04:39:31,979 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;@65ffe499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 04:39:31,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 04:39:31,984 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 04:39:31,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 04:39:31,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:39:31,993 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 04:39:31,994 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:39:31,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:39:31,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-01 04:39:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:39:32,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385146846] [2024-11-01 04:39:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:39:32,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:39:32,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:39:32,008 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) [2024-11-01 04:39:32,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-01 04:39:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:39:33,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 04:39:33,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:39:33,422 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 04:39:33,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:39:33,459 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 04:39:33,460 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 04:39:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385146846] [2024-11-01 04:39:33,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [385146846] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-01 04:39:33,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-01 04:39:33,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-01 04:39:33,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778424911] [2024-11-01 04:39:33,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-01 04:39:33,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 04:39:33,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 04:39:33,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 04:39:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 04:39:33,494 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 04:39:33,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 04:39:33,515 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-01 04:39:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 04:39:33,518 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 04:39:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 04:39:33,526 INFO L225 Difference]: With dead ends: 35 [2024-11-01 04:39:33,526 INFO L226 Difference]: Without dead ends: 17 [2024-11-01 04:39:33,530 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 04:39:33,535 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 04:39:33,537 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 04:39:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-01 04:39:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-01 04:39:33,567 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 04:39:33,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-01 04:39:33,570 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-01 04:39:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 04:39:33,571 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-01 04:39:33,571 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 04:39:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-01 04:39:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-01 04:39:33,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:39:33,573 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 04:39:33,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-01 04:39:33,774 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 [2024-11-01 04:39:33,775 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:39:33,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:39:33,776 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-01 04:39:33,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:39:33,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106599691] [2024-11-01 04:39:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:39:33,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:39:33,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:39:33,778 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) [2024-11-01 04:39:33,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-01 04:39:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:39:34,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-01 04:39:34,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:39:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-01 04:39:35,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:39:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-01 04:39:35,719 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 04:39:35,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106599691] [2024-11-01 04:39:35,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1106599691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 04:39:35,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 04:39:35,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-01 04:39:35,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014745614] [2024-11-01 04:39:35,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 04:39:35,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-01 04:39:35,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 04:39:35,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-01 04:39:35,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 04:39:35,727 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-01 04:39:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 04:39:36,615 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-01 04:39:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-01 04:39:36,616 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2024-11-01 04:39:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 04:39:36,617 INFO L225 Difference]: With dead ends: 27 [2024-11-01 04:39:36,617 INFO L226 Difference]: Without dead ends: 25 [2024-11-01 04:39:36,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-01 04:39:36,618 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-01 04:39:36,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-01 04:39:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-01 04:39:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-01 04:39:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-01 04:39:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-01 04:39:36,626 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-01 04:39:36,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 04:39:36,627 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-01 04:39:36,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 11 states have internal predecessors, (22), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-01 04:39:36,627 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-01 04:39:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-01 04:39:36,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:39:36,629 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-01 04:39:36,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-01 04:39:36,830 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 [2024-11-01 04:39:36,830 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:39:36,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:39:36,831 INFO L85 PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times [2024-11-01 04:39:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:39:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356045081] [2024-11-01 04:39:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:39:36,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:39:36,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:39:36,833 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) [2024-11-01 04:39:36,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-01 04:39:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:39:38,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-01 04:39:38,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:39:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 04:39:39,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:39:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-01 04:39:53,458 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 04:39:53,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356045081] [2024-11-01 04:39:53,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [356045081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 04:39:53,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 04:39:53,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-01 04:39:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603596684] [2024-11-01 04:39:53,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 04:39:53,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-01 04:39:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 04:39:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-01 04:39:53,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=223, Unknown=3, NotChecked=0, Total=272 [2024-11-01 04:39:53,462 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 04:39:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 04:39:55,024 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-01 04:39:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 04:39:55,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 44 [2024-11-01 04:39:55,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 04:39:55,026 INFO L225 Difference]: With dead ends: 36 [2024-11-01 04:39:55,026 INFO L226 Difference]: Without dead ends: 34 [2024-11-01 04:39:55,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=81, Invalid=336, Unknown=3, NotChecked=0, Total=420 [2024-11-01 04:39:55,027 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-01 04:39:55,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-01 04:39:55,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-01 04:39:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-01 04:39:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-01 04:39:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-01 04:39:55,037 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44 [2024-11-01 04:39:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 04:39:55,037 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-01 04:39:55,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 17 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-01 04:39:55,038 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-01 04:39:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-01 04:39:55,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 04:39:55,039 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-01 04:39:55,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-01 04:39:55,240 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 [2024-11-01 04:39:55,241 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 04:39:55,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 04:39:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times [2024-11-01 04:39:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 04:39:55,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035997384] [2024-11-01 04:39:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 04:39:55,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-01 04:39:55,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 04:39:55,244 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) [2024-11-01 04:39:55,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-01 04:39:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 04:39:57,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 4436 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-01 04:39:57,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 04:40:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 55 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-01 04:40:01,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 04:40:06,074 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse5 (forall ((|v_ULTIMATE.start_main_~var_713_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_717_arg_0~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_713_arg_1~0#1_17|)))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_717_arg_0~0#1_18|))))))))) (.cse6 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_694~0#1|))) (let ((.cse10 (or .cse5 .cse6)) (.cse11 (not .cse6)) (.cse12 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_671~0#1|))) (let ((.cse4 (and .cse10 (or .cse11 (forall ((|v_ULTIMATE.start_main_~var_674_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_677_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_688_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_717_arg_0~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_717_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_674_arg_1~0#1_17|) .cse12))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_677_arg_1~0#1_17|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_688_arg_1~0#1_17|))))))) (_ bv0 32))))))))))))))))))) (.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_690~0#1|)) (.cse2 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_3~0#1|))) (let ((.cse0 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 16) |c_ULTIMATE.start_main_~state_12~0#1|)))))) (_ bv0 32))) (.cse7 (let ((.cse9 (= .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_658~0#1|))))))))) (and (or .cse9 .cse4) (or (not .cse9) (and .cse10 (or .cse11 (forall ((|v_ULTIMATE.start_main_~var_674_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_677_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_688_arg_1~0#1_17| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_717_arg_0~0#1_18| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_717_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_674_arg_1~0#1_17|) .cse12))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_677_arg_1~0#1_17|)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_688_arg_1~0#1_17|))))))) (_ bv1 32))))))))))))))))))))))) (and (or .cse0 (let ((.cse1 (= ((_ extract 7 0) (bvand .cse8 (_ bv254 32))) (_ bv0 8)))) (and (or (not .cse1) (and (or (forall ((|v_ULTIMATE.start_main_~var_661_arg_2~0#1_16| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_661_arg_2~0#1_16|)))))) .cse3)) .cse4) (or .cse5 (forall ((|v_ULTIMATE.start_main_~var_661_arg_2~0#1_16| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_661_arg_2~0#1_16|)))))) .cse3))) .cse6))) (or .cse1 .cse7)))) (or (= (_ bv0 8) ((_ extract 7 0) (bvand .cse8 (_ bv255 32)))) (not .cse0) .cse7))))))) is different from false