/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_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 16:08:51,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 16:08:52,007 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 16:08:52,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 16:08:52,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 16:08:52,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 16:08:52,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 16:08:52,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 16:08:52,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 16:08:52,042 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 16:08:52,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 16:08:52,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 16:08:52,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 16:08:52,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 16:08:52,047 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 16:08:52,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 16:08:52,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 16:08:52,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 16:08:52,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 16:08:52,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 16:08:52,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 16:08:52,049 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 16:08:52,049 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 16:08:52,050 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 16:08:52,050 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 16:08:52,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 16:08:52,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 16:08:52,051 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 16:08:52,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 16:08:52,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 16:08:52,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 16:08:52,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 16:08:52,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 16:08:52,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 16:08:52,052 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 16:08:52,052 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 16:08:52,053 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 16:08:52,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 16:08:52,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 16:08:52,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 16:08:52,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 16:08:52,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:08:52,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 16:08:52,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 16:08:52,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 16:08:52,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 16:08:52,335 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 16:08:52,336 INFO L431 ainManager$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_d32_e0.c [2024-11-04 16:08:53,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 16:08:54,097 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 16:08:54,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w8_d32_e0.c [2024-11-04 16:08:54,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24aa2397a/b0bcb9a1a75f4019ad88571af07bcd98/FLAG3eb60d2f1 [2024-11-04 16:08:54,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24aa2397a/b0bcb9a1a75f4019ad88571af07bcd98 [2024-11-04 16:08:54,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 16:08:54,135 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 16:08:54,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 16:08:54,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 16:08:54,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 16:08:54,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:54,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69940157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54, skipping insertion in model container [2024-11-04 16:08:54,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:54,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 16:08:54,397 WARN L250 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_d32_e0.c[1279,1292] [2024-11-04 16:08:54,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 16:08:54,718 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 16:08:54,726 WARN L250 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_d32_e0.c[1279,1292] [2024-11-04 16:08:54,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 16:08:54,852 INFO L204 MainTranslator]: Completed translation [2024-11-04 16:08:54,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54 WrapperNode [2024-11-04 16:08:54,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 16:08:54,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 16:08:54,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 16:08:54,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 16:08:54,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:54,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:54,984 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1459 [2024-11-04 16:08:54,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 16:08:54,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 16:08:54,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 16:08:54,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 16:08:54,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:54,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:55,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:55,061 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]. [2024-11-04 16:08:55,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:55,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:55,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:55,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:55,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:55,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:55,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 16:08:55,140 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 16:08:55,140 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 16:08:55,140 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 16:08:55,141 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (1/1) ... [2024-11-04 16:08:55,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 16:08:55,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:08:55,172 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) [2024-11-04 16:08:55,174 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 [2024-11-04 16:08:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 16:08:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 16:08:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 16:08:55,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 16:08:55,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 16:08:55,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 16:08:55,450 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 16:08:55,453 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 16:08:56,561 INFO L? ?]: Removed 416 outVars from TransFormulas that were not future-live. [2024-11-04 16:08:56,563 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 16:08:56,574 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 16:08:56,574 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-04 16:08:56,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:08:56 BoogieIcfgContainer [2024-11-04 16:08:56,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 16:08:56,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 16:08:56,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 16:08:56,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 16:08:56,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:08:54" (1/3) ... [2024-11-04 16:08:56,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a983e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:08:56, skipping insertion in model container [2024-11-04 16:08:56,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:08:54" (2/3) ... [2024-11-04 16:08:56,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a983e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:08:56, skipping insertion in model container [2024-11-04 16:08:56,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:08:56" (3/3) ... [2024-11-04 16:08:56,585 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w8_d32_e0.c [2024-11-04 16:08:56,601 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 16:08:56,601 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 16:08:56,657 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 16:08:56,663 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;@40c1a0af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 16:08:56,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 16:08:56,668 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) [2024-11-04 16:08:56,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-04 16:08:56,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 16:08:56,676 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 16:08:56,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 16:08:56,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 16:08:56,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times [2024-11-04 16:08:56,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 16:08:56,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694401910] [2024-11-04 16:08:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 16:08:56,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:08:56,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:08:56,694 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) [2024-11-04 16:08:56,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-04 16:08:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 16:08:57,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 16:08:57,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 16:08:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-04 16:08:57,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 16:08:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-04 16:08:57,305 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 16:08:57,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694401910] [2024-11-04 16:08:57,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1694401910] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 16:08:57,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 16:08:57,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-04 16:08:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919998883] [2024-11-04 16:08:57,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 16:08:57,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 16:08:57,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 16:08:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 16:08:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 16:08:57,337 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) [2024-11-04 16:08:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 16:08:57,350 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-04 16:08:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 16:08:57,351 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 [2024-11-04 16:08:57,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 16:08:57,356 INFO L225 Difference]: With dead ends: 35 [2024-11-04 16:08:57,357 INFO L226 Difference]: Without dead ends: 17 [2024-11-04 16:08:57,359 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 [2024-11-04 16:08:57,362 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 [2024-11-04 16:08:57,362 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] [2024-11-04 16:08:57,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-04 16:08:57,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-04 16:08:57,391 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) [2024-11-04 16:08:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-04 16:08:57,393 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23 [2024-11-04 16:08:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 16:08:57,394 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-04 16:08:57,394 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) [2024-11-04 16:08:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-04 16:08:57,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-04 16:08:57,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 16:08:57,396 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 16:08:57,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-04 16:08:57,600 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 [2024-11-04 16:08:57,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 16:08:57,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 16:08:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times [2024-11-04 16:08:57,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 16:08:57,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265101488] [2024-11-04 16:08:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 16:08:57,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:08:57,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:08:57,604 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) [2024-11-04 16:08:57,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-04 16:08:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 16:08:58,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-04 16:08:58,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 16:08:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-04 16:08:58,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 16:08:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-04 16:08:58,764 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 16:08:58,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265101488] [2024-11-04 16:08:58,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1265101488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 16:08:58,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 16:08:58,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-04 16:08:58,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529777166] [2024-11-04 16:08:58,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 16:08:58,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-04 16:08:58,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 16:08:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-04 16:08:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-04 16:08:58,772 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) [2024-11-04 16:08:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 16:08:59,120 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-04 16:08:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-04 16:08:59,121 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 [2024-11-04 16:08:59,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 16:08:59,122 INFO L225 Difference]: With dead ends: 27 [2024-11-04 16:08:59,122 INFO L226 Difference]: Without dead ends: 25 [2024-11-04 16:08:59,123 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 [2024-11-04 16:08:59,124 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-04 16:08:59,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-04 16:08:59,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-04 16:08:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-04 16:08:59,135 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) [2024-11-04 16:08:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-04 16:08:59,137 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2024-11-04 16:08:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 16:08:59,139 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-04 16:08:59,140 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) [2024-11-04 16:08:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-04 16:08:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-04 16:08:59,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 16:08:59,142 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-04 16:08:59,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-04 16:08:59,345 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 [2024-11-04 16:08:59,346 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 16:08:59,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 16:08:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times [2024-11-04 16:08:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 16:08:59,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240883656] [2024-11-04 16:08:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 16:08:59,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:08:59,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:08:59,354 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) [2024-11-04 16:08:59,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-04 16:09:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 16:09:00,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-04 16:09:00,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 16:09:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-04 16:09:00,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 16:09:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-04 16:09:03,156 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 16:09:03,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240883656] [2024-11-04 16:09:03,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1240883656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 16:09:03,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 16:09:03,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-04 16:09:03,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342945175] [2024-11-04 16:09:03,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 16:09:03,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-04 16:09:03,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 16:09:03,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-04 16:09:03,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-04 16:09:03,159 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) [2024-11-04 16:09:03,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 16:09:03,932 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-04 16:09:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-04 16:09:03,932 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 [2024-11-04 16:09:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 16:09:03,934 INFO L225 Difference]: With dead ends: 36 [2024-11-04 16:09:03,934 INFO L226 Difference]: Without dead ends: 34 [2024-11-04 16:09:03,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-04 16:09:03,935 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-04 16:09:03,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-04 16:09:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-04 16:09:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-04 16:09:03,942 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) [2024-11-04 16:09:03,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-04 16:09:03,943 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44 [2024-11-04 16:09:03,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 16:09:03,944 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-04 16:09:03,944 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) [2024-11-04 16:09:03,944 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-04 16:09:03,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-04 16:09:03,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 16:09:03,946 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-04 16:09:03,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-04 16:09:04,151 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 [2024-11-04 16:09:04,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 16:09:04,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 16:09:04,153 INFO L85 PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times [2024-11-04 16:09:04,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 16:09:04,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703242571] [2024-11-04 16:09:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 16:09:04,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 16:09:04,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 16:09:04,156 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) [2024-11-04 16:09:04,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-04 16:09:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 16:09:05,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-04 16:09:05,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 16:09:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 24 proven. 55 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-04 16:09:09,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 16:09:26,819 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse36 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_173~0#1|))))) (.cse29 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_190~0#1|)) (.cse22 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse35 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_194~0#1|))) (let ((.cse11 (= (_ bv0 32) .cse35)) (.cse18 (forall ((|v_ULTIMATE.start_main_~var_236_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_232_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_arg_0~0#1_18|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_232_arg_1~0#1_17|)))))))))))))) (.cse19 (= (_ bv0 8) |c_ULTIMATE.start_main_~state_213~0#1|)) (.cse30 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_11~0#1|)) (.cse34 ((_ zero_extend 24) ((_ extract 7 0) (bvnot .cse29)))) (.cse32 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_213~0#1|)) (.cse31 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse36))) .cse22))) (_ bv0 32))) (.cse33 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse36)))))) (_ bv0 32)))) (let ((.cse3 (and (or (not (= (_ bv0 32) .cse32)) .cse31) .cse33)) (.cse4 (forall ((|ULTIMATE.start_main_~input_5~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_198_arg_0~0#1_16| (_ BitVec 8))) (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse30 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~input_5~0#1|) .cse22)))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_198_arg_0~0#1_16|) .cse34)))))) .cse35)))))))))))))) (.cse6 (forall ((|ULTIMATE.start_main_~input_5~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_198_arg_0~0#1_16| (_ BitVec 8))) (not (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse30 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvneg ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~input_5~0#1|) .cse22)))) ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_198_arg_0~0#1_16|) .cse34)))))) .cse35))))))))))))))) (.cse8 (and (or .cse31 (forall ((|v_ULTIMATE.start_main_~var_215_arg_0~0#1_18| (_ BitVec 8))) (or (= (_ bv0 8) |v_ULTIMATE.start_main_~var_215_arg_0~0#1_18|) (not (= ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_215_arg_0~0#1_18|) .cse32))))) .cse33)) (.cse9 (forall ((|v_ULTIMATE.start_main_~var_204_arg_1~0#1_16| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse30 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_204_arg_1~0#1_16|)))))) (_ bv0 32))))) (.cse10 (forall ((|v_ULTIMATE.start_main_~var_204_arg_1~0#1_16| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse30 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_204_arg_1~0#1_16|)))))) (_ bv0 32)))) (.cse15 (and (or .cse18 .cse19) (or (not .cse19) (forall ((|v_ULTIMATE.start_main_~var_236_arg_0~0#1_18| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_193_arg_1~0#1_17| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_236_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 (_ bv255 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_193_arg_1~0#1_17|) .cse29))) (_ bv1 32)))))))))) (_ bv0 32)))))))))))) .cse22))))))) (.cse17 (not .cse11)) (.cse20 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_3~0#1|)) (.cse21 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_209~0#1|))) (let ((.cse0 (let ((.cse28 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse20 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_177~0#1|)))))) .cse21))) (let ((.cse27 (or .cse18 (not .cse28) .cse19))) (let ((.cse25 (and .cse27 (or .cse28 .cse18 .cse19)))) (let ((.cse26 (or .cse25 .cse17))) (let ((.cse24 (and (or (and .cse27 (or .cse15 .cse28)) .cse11) .cse26)) (.cse23 (and (or .cse25 .cse11) .cse26))) (and (or .cse3 (and (or .cse4 .cse23) (or .cse6 .cse24))) (or .cse8 (and (or .cse24 .cse9) (or .cse10 .cse23)))))))))) (.cse1 (= (_ bv0 32) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_13~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_12~0#1|))))))))) (and (or .cse0 (not .cse1)) (or (let ((.cse2 (= ((_ extract 7 0) (bvand .cse22 (_ bv254 32))) (_ bv0 8)))) (and (or (not .cse2) (let ((.cse14 (or (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse20 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_180_arg_2~0#1_16|)))))) .cse21))) .cse18 .cse19)) (.cse16 (forall ((|v_ULTIMATE.start_main_~var_180_arg_2~0#1_16| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse20 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_180_arg_2~0#1_16|)))))) .cse21)))) (let ((.cse12 (and .cse14 (or .cse18 .cse19 .cse16)))) (let ((.cse13 (or .cse17 .cse12))) (let ((.cse7 (and .cse13 (or (and .cse14 (or .cse15 .cse16)) .cse11))) (.cse5 (and (or .cse11 .cse12) .cse13))) (and (or .cse3 (and (or .cse4 .cse5) (or .cse6 .cse7))) (or .cse8 (and (or .cse7 .cse9) (or .cse5 .cse10))))))))) (or .cse2 .cse0))) .cse1)))))) is different from false