/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/interleave_bits.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-10-31 17:23:28,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 17:23:28,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 17:23:28,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 17:23:28,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 17:23:28,142 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 17:23:28,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 17:23:28,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 17:23:28,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 17:23:28,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 17:23:28,145 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 17:23:28,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 17:23:28,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 17:23:28,146 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 17:23:28,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 17:23:28,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 17:23:28,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 17:23:28,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 17:23:28,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 17:23:28,147 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 17:23:28,147 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 17:23:28,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 17:23:28,149 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 17:23:28,149 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 17:23:28,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 17:23:28,149 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 17:23:28,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 17:23:28,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 17:23:28,150 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 17:23:28,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 17:23:28,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 17:23:28,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 17:23:28,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 17:23:28,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 17:23:28,151 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 17:23:28,151 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 17:23:28,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 17:23:28,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 17:23:28,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 17:23:28,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 17:23:28,152 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 17:23:28,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:28,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 17:23:28,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 17:23:28,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 17:23:28,402 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 17:23:28,402 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 17:23:28,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/interleave_bits.i [2024-10-31 17:23:29,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 17:23:29,914 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 17:23:29,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i [2024-10-31 17:23:29,919 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadc95eea/b797a8ce6fa84cb8abb6ef99c4a0f212/FLAG1609441c5 [2024-10-31 17:23:29,932 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadc95eea/b797a8ce6fa84cb8abb6ef99c4a0f212 [2024-10-31 17:23:29,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 17:23:29,935 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-31 17:23:29,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 17:23:29,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 17:23:29,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 17:23:29,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 05:23:29" (1/1) ... [2024-10-31 17:23:29,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9ea7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:29, skipping insertion in model container [2024-10-31 17:23:29,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 05:23:29" (1/1) ... [2024-10-31 17:23:29,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 17:23:30,099 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i[1175,1188] [2024-10-31 17:23:30,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 17:23:30,128 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 17:23:30,139 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i[1175,1188] [2024-10-31 17:23:30,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 17:23:30,161 INFO L204 MainTranslator]: Completed translation [2024-10-31 17:23:30,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30 WrapperNode [2024-10-31 17:23:30,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 17:23:30,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 17:23:30,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 17:23:30,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 17:23:30,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,185 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2024-10-31 17:23:30,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 17:23:30,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 17:23:30,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 17:23:30,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 17:23:30,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,201 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]. [2024-10-31 17:23:30,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 17:23:30,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 17:23:30,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 17:23:30,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 17:23:30,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (1/1) ... [2024-10-31 17:23:30,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 17:23:30,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:30,241 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) [2024-10-31 17:23:30,244 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 [2024-10-31 17:23:30,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 17:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 17:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 17:23:30,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 17:23:30,309 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 17:23:30,310 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 17:23:30,387 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-31 17:23:30,388 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 17:23:30,396 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 17:23:30,397 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 17:23:30,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 05:23:30 BoogieIcfgContainer [2024-10-31 17:23:30,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 17:23:30,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 17:23:30,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 17:23:30,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 17:23:30,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 05:23:29" (1/3) ... [2024-10-31 17:23:30,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704423c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 05:23:30, skipping insertion in model container [2024-10-31 17:23:30,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:23:30" (2/3) ... [2024-10-31 17:23:30,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704423c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 05:23:30, skipping insertion in model container [2024-10-31 17:23:30,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 05:23:30" (3/3) ... [2024-10-31 17:23:30,402 INFO L112 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2024-10-31 17:23:30,413 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 17:23:30,413 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 17:23:30,457 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 17:23:30,462 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;@7b8b5940, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 17:23:30,462 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 17:23:30,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 17:23:30,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:23:30,470 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 17:23:30,472 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:23:30,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:23:30,477 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2024-10-31 17:23:30,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:23:30,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269485439] [2024-10-31 17:23:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:23:30,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:30,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:30,512 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) [2024-10-31 17:23:30,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 17:23:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:23:30,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:23:30,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:23:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:30,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:23:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:30,642 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:23:30,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269485439] [2024-10-31 17:23:30,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [269485439] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:23:30,642 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:23:30,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 17:23:30,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582151743] [2024-10-31 17:23:30,644 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:23:30,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 17:23:30,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:23:30,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 17:23:30,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:23:30,675 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:23:30,701 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2024-10-31 17:23:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 17:23:30,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-31 17:23:30,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:23:30,709 INFO L225 Difference]: With dead ends: 21 [2024-10-31 17:23:30,709 INFO L226 Difference]: Without dead ends: 9 [2024-10-31 17:23:30,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:23:30,713 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:23:30,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:23:30,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-31 17:23:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-10-31 17:23:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-10-31 17:23:30,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2024-10-31 17:23:30,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:23:30,738 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-10-31 17:23:30,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-10-31 17:23:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 17:23:30,739 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:23:30,739 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-31 17:23:30,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 17:23:30,939 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 [2024-10-31 17:23:30,940 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:23:30,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:23:30,940 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2024-10-31 17:23:30,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:23:30,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487310440] [2024-10-31 17:23:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:23:30,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:30,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:30,943 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) [2024-10-31 17:23:30,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 17:23:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:23:30,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 17:23:30,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:23:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:31,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:23:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:31,103 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:23:31,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487310440] [2024-10-31 17:23:31,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1487310440] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:23:31,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:23:31,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-31 17:23:31,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132248413] [2024-10-31 17:23:31,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:23:31,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 17:23:31,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:23:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 17:23:31,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 17:23:31,107 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:31,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:23:31,167 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2024-10-31 17:23:31,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 17:23:31,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-31 17:23:31,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:23:31,168 INFO L225 Difference]: With dead ends: 17 [2024-10-31 17:23:31,168 INFO L226 Difference]: Without dead ends: 13 [2024-10-31 17:23:31,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-10-31 17:23:31,169 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:23:31,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:23:31,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-31 17:23:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-31 17:23:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:31,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-10-31 17:23:31,175 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2024-10-31 17:23:31,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:23:31,176 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-10-31 17:23:31,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:31,176 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-10-31 17:23:31,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 17:23:31,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:23:31,176 INFO L215 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2024-10-31 17:23:31,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 17:23:31,380 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 [2024-10-31 17:23:31,381 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:23:31,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:23:31,381 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 2 times [2024-10-31 17:23:31,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:23:31,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523189668] [2024-10-31 17:23:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:23:31,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:31,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:31,383 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) [2024-10-31 17:23:31,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 17:23:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:23:31,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 17:23:31,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:23:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:31,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:23:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:31,631 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:23:31,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523189668] [2024-10-31 17:23:31,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1523189668] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:23:31,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:23:31,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-10-31 17:23:31,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898761530] [2024-10-31 17:23:31,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:23:31,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-31 17:23:31,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:23:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-31 17:23:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-10-31 17:23:31,633 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:31,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:23:31,865 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2024-10-31 17:23:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 17:23:31,866 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-31 17:23:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:23:31,866 INFO L225 Difference]: With dead ends: 25 [2024-10-31 17:23:31,867 INFO L226 Difference]: Without dead ends: 21 [2024-10-31 17:23:31,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2024-10-31 17:23:31,868 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:23:31,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:23:31,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-31 17:23:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-31 17:23:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-10-31 17:23:31,876 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2024-10-31 17:23:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:23:31,877 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-10-31 17:23:31,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-10-31 17:23:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-31 17:23:31,878 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:23:31,878 INFO L215 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1] [2024-10-31 17:23:31,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 17:23:32,079 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 [2024-10-31 17:23:32,079 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:23:32,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:23:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2078182539, now seen corresponding path program 3 times [2024-10-31 17:23:32,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:23:32,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334584114] [2024-10-31 17:23:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:23:32,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:32,084 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) [2024-10-31 17:23:32,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 17:23:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:23:32,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-31 17:23:32,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:23:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:32,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:23:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:32,732 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:23:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334584114] [2024-10-31 17:23:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1334584114] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:23:32,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:23:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2024-10-31 17:23:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480789125] [2024-10-31 17:23:32,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:23:32,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-31 17:23:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:23:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-31 17:23:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2024-10-31 17:23:32,735 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 32 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:33,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:23:33,621 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2024-10-31 17:23:33,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-31 17:23:33,621 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-31 17:23:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:23:33,622 INFO L225 Difference]: With dead ends: 41 [2024-10-31 17:23:33,622 INFO L226 Difference]: Without dead ends: 37 [2024-10-31 17:23:33,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=603, Invalid=1467, Unknown=0, NotChecked=0, Total=2070 [2024-10-31 17:23:33,623 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:23:33,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:23:33,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-31 17:23:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-31 17:23:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-10-31 17:23:33,634 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 20 [2024-10-31 17:23:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:23:33,634 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-10-31 17:23:33,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-10-31 17:23:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-31 17:23:33,634 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:23:33,635 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1] [2024-10-31 17:23:33,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 17:23:33,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:33,835 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:23:33,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:23:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash 26919211, now seen corresponding path program 4 times [2024-10-31 17:23:33,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:23:33,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356601714] [2024-10-31 17:23:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:23:33,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:33,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:23:33,838 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:23:33,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 17:23:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:23:33,919 WARN L253 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-31 17:23:33,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:23:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:34,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:23:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:23:55,388 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:23:55,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356601714] [2024-10-31 17:23:55,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1356601714] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:23:55,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:23:55,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2024-10-31 17:23:55,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495973590] [2024-10-31 17:23:55,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:23:55,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-31 17:23:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:23:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-31 17:23:55,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2024-10-31 17:23:55,391 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:58,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:23:58,014 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-10-31 17:23:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-31 17:23:58,027 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-31 17:23:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:23:58,027 INFO L225 Difference]: With dead ends: 37 [2024-10-31 17:23:58,027 INFO L226 Difference]: Without dead ends: 0 [2024-10-31 17:23:58,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2024-10-31 17:23:58,029 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:23:58,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 17:23:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-31 17:23:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-31 17:23:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-31 17:23:58,030 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2024-10-31 17:23:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:23:58,030 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 17:23:58,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 17:23:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-31 17:23:58,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-31 17:23:58,036 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 17:23:58,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 17:23:58,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:23:58,239 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1] [2024-10-31 17:23:58,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-31 17:24:19,584 WARN L286 SmtUtils]: Spent 21.27s on a formula simplification. DAG size of input: 469 DAG size of output: 187 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-31 17:24:19,599 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 17:24:19,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 05:24:19 BoogieIcfgContainer [2024-10-31 17:24:19,681 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 17:24:19,682 INFO L158 Benchmark]: Toolchain (without parser) took 49746.85ms. Allocated memory was 202.4MB in the beginning and 313.5MB in the end (delta: 111.1MB). Free memory was 178.2MB in the beginning and 240.7MB in the end (delta: -62.5MB). Peak memory consumption was 183.9MB. Max. memory is 8.0GB. [2024-10-31 17:24:19,682 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 202.4MB. Free memory is still 178.2MB. There was no memory consumed. Max. memory is 8.0GB. [2024-10-31 17:24:19,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.37ms. Allocated memory is still 202.4MB. Free memory was 177.8MB in the beginning and 164.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2024-10-31 17:24:19,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.85ms. Allocated memory is still 202.4MB. Free memory was 164.8MB in the beginning and 163.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-10-31 17:24:19,683 INFO L158 Benchmark]: Boogie Preprocessor took 22.53ms. Allocated memory is still 202.4MB. Free memory was 163.1MB in the beginning and 161.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2024-10-31 17:24:19,683 INFO L158 Benchmark]: RCFGBuilder took 188.26ms. Allocated memory is still 202.4MB. Free memory was 161.4MB in the beginning and 151.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2024-10-31 17:24:19,683 INFO L158 Benchmark]: TraceAbstraction took 49282.95ms. Allocated memory was 202.4MB in the beginning and 313.5MB in the end (delta: 111.1MB). Free memory was 150.2MB in the beginning and 240.7MB in the end (delta: -90.5MB). Peak memory consumption was 155.6MB. Max. memory is 8.0GB. [2024-10-31 17:24:19,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 202.4MB. Free memory is still 178.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.37ms. Allocated memory is still 202.4MB. Free memory was 177.8MB in the beginning and 164.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.85ms. Allocated memory is still 202.4MB. Free memory was 164.8MB in the beginning and 163.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.53ms. Allocated memory is still 202.4MB. Free memory was 163.1MB in the beginning and 161.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 188.26ms. Allocated memory is still 202.4MB. Free memory was 161.4MB in the beginning and 151.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 49282.95ms. Allocated memory was 202.4MB in the beginning and 313.5MB in the end (delta: 111.1MB). Free memory was 150.2MB in the beginning and 240.7MB in the end (delta: -90.5MB). Peak memory consumption was 155.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.8s, OverallIterations: 5, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 544 IncrementalHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 29 mSDtfsCounter, 544 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 23.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 22.5s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 126 ConstructedInterpolants, 1 QuantifiedInterpolants, 10334 SizeOfPredicates, 2 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 120/530 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((((((((i == 9) && (z == (((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) | (((y & 256) << 9) | ((x & 256) << 8))))) || ((z == ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) && (i == 7))) || ((((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) == z) && (i == 2))) || ((i == 1) && (z == (0 | (((y & 1) << 1) | ((x & 1) << 0)))))) || (!(i < 16) && (z == ((((y & 32768) << 16) | ((x & 32768) << 15)) | ((((y & 16384) << 15) | ((x & 16384) << 14)) | ((((((x & 2048) << 11) | ((y & 2048) << 12)) | (((((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) | (((y & 256) << 9) | ((x & 256) << 8))) | (((y & 512) << 10) | ((x & 512) << 9))) | (((x & 1024) << 10) | ((y & 1024) << 11)))) | (((x & 4096) << 12) | ((y & 4096) << 13))) | (((y & 8192) << 14) | ((x & 8192) << 13)))))))) || ((i == 8) && (z == ((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4))))))))) || ((i == 10) && (z == ((((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) | (((y & 256) << 9) | ((x & 256) << 8))) | (((y & 512) << 10) | ((x & 512) << 9)))))) || ((z == ((((y & 32768) << 16) | ((x & 32768) << 15)) | ((((y & 16384) << 15) | ((x & 16384) << 14)) | ((((((x & 2048) << 11) | ((y & 2048) << 12)) | (((((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) | (((y & 256) << 9) | ((x & 256) << 8))) | (((y & 512) << 10) | ((x & 512) << 9))) | (((x & 1024) << 10) | ((y & 1024) << 11)))) | (((x & 4096) << 12) | ((y & 4096) << 13))) | (((y & 8192) << 14) | ((x & 8192) << 13)))))) && !(((i + 15) % 4294967296) < 16))) || ((i == 6) && (z == ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4))))))) || ((z == (((((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) | (((y & 256) << 9) | ((x & 256) << 8))) | (((y & 512) << 10) | ((x & 512) << 9))) | (((x & 1024) << 10) | ((y & 1024) << 11)))) && (i == 11))) || ((z == (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))) && (i == 5))) || ((z == ((((x & 2048) << 11) | ((y & 2048) << 12)) | (((((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) | (((y & 256) << 9) | ((x & 256) << 8))) | (((y & 512) << 10) | ((x & 512) << 9))) | (((x & 1024) << 10) | ((y & 1024) << 11))))) && (i == 12))) || ((z == ((((((x & 2048) << 11) | ((y & 2048) << 12)) | (((((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) | (((y & 256) << 9) | ((x & 256) << 8))) | (((y & 512) << 10) | ((x & 512) << 9))) | (((x & 1024) << 10) | ((y & 1024) << 11)))) | (((x & 4096) << 12) | ((y & 4096) << 13))) | (((y & 8192) << 14) | ((x & 8192) << 13)))) && (i == 14))) || (((((((x & 2048) << 11) | ((y & 2048) << 12)) | (((((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) | (((y & 256) << 9) | ((x & 256) << 8))) | (((y & 512) << 10) | ((x & 512) << 9))) | (((x & 1024) << 10) | ((y & 1024) << 11)))) | (((x & 4096) << 12) | ((y & 4096) << 13))) == z) && (i == 13))) || ((z == ((((y & 16384) << 15) | ((x & 16384) << 14)) | ((((((x & 2048) << 11) | ((y & 2048) << 12)) | (((((((x & 128) << 7) | ((y & 128) << 8)) | ((((x & 64) << 6) | ((y & 64) << 7)) | ((((x & 32) << 5) | ((y & 32) << 6)) | (((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))) | (((y & 16) << 5) | ((x & 16) << 4)))))) | (((y & 256) << 9) | ((x & 256) << 8))) | (((y & 512) << 10) | ((x & 512) << 9))) | (((x & 1024) << 10) | ((y & 1024) << 11)))) | (((x & 4096) << 12) | ((y & 4096) << 13))) | (((y & 8192) << 14) | ((x & 8192) << 13))))) && (i == 15))) || ((i == 0) && (z == 0))) || ((z == ((((y & 8) << 4) | ((x & 8) << 3)) | (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2))))) && (i == 4))) || ((i == 3) && (z == (((((y & 2) << 2) | ((x & 2) << 1)) | (0 | (((y & 1) << 1) | ((x & 1) << 0)))) | (((y & 4) << 3) | ((x & 4) << 2)))))) RESULT: Ultimate proved your program to be correct! [2024-10-31 17:24:19,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...