/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 09:52:57,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 09:52:57,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 09:52:57,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 09:52:57,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 09:52:57,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 09:52:57,815 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 09:52:57,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 09:52:57,816 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 09:52:57,816 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 09:52:57,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 09:52:57,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 09:52:57,817 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 09:52:57,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 09:52:57,817 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 09:52:57,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 09:52:57,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 09:52:57,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 09:52:57,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 09:52:57,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 09:52:57,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 09:52:57,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 09:52:57,823 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 09:52:57,823 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 09:52:57,823 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 09:52:57,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 09:52:57,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 09:52:57,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 09:52:57,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 09:52:57,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 09:52:57,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 09:52:57,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 09:52:57,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 09:52:57,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 09:52:57,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 09:52:57,825 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 09:52:57,825 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 09:52:57,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 09:52:57,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 09:52:57,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 09:52:57,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 09:52:57,827 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 09:52:57,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-01 09:52:58,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 09:52:58,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 09:52:58,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 09:52:58,100 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 09:52:58,101 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 09:52:58,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c [2024-11-01 09:52:59,321 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 09:52:59,516 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 09:52:59,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c [2024-11-01 09:52:59,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7d9ade9/d1176b474fd34d37b1325afbb3a72255/FLAGd14c21832 [2024-11-01 09:52:59,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a7d9ade9/d1176b474fd34d37b1325afbb3a72255 [2024-11-01 09:52:59,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 09:52:59,548 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 09:52:59,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 09:52:59,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 09:52:59,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 09:52:59,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678f5bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59, skipping insertion in model container [2024-11-01 09:52:59,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,581 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 09:52:59,722 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c[1266,1279] [2024-11-01 09:52:59,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 09:52:59,777 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 09:52:59,787 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c[1266,1279] [2024-11-01 09:52:59,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 09:52:59,830 INFO L204 MainTranslator]: Completed translation [2024-11-01 09:52:59,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59 WrapperNode [2024-11-01 09:52:59,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 09:52:59,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 09:52:59,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 09:52:59,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 09:52:59,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,863 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 262 [2024-11-01 09:52:59,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 09:52:59,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 09:52:59,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 09:52:59,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 09:52:59,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,891 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-01 09:52:59,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,907 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,913 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 09:52:59,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 09:52:59,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 09:52:59,914 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 09:52:59,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (1/1) ... [2024-11-01 09:52:59,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 09:52:59,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 09:52:59,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-01 09:52:59,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-01 09:52:59,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 09:52:59,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 09:52:59,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 09:52:59,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 09:53:00,057 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 09:53:00,059 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 09:53:00,257 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-01 09:53:00,257 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 09:53:00,271 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 09:53:00,271 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 09:53:00,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:53:00 BoogieIcfgContainer [2024-11-01 09:53:00,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 09:53:00,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 09:53:00,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 09:53:00,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 09:53:00,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 09:52:59" (1/3) ... [2024-11-01 09:53:00,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b06c9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:53:00, skipping insertion in model container [2024-11-01 09:53:00,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:52:59" (2/3) ... [2024-11-01 09:53:00,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b06c9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:53:00, skipping insertion in model container [2024-11-01 09:53:00,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:53:00" (3/3) ... [2024-11-01 09:53:00,280 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c [2024-11-01 09:53:00,294 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 09:53:00,294 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 09:53:00,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 09:53:00,377 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;@1d984cc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 09:53:00,377 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 09:53:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2024-11-01 09:53:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-01 09:53:00,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:53:00,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-01 09:53:00,387 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:53:00,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:53:00,391 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-01 09:53:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:53:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54837518] [2024-11-01 09:53:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:53:00,400 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:53:00,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:53:00,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 09:53:00,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-01 09:53:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:53:00,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-01 09:53:00,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:53:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:53:00,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:53:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:53:00,791 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:53:00,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54837518] [2024-11-01 09:53:00,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [54837518] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 09:53:00,792 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 09:53:00,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 09:53:00,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862881083] [2024-11-01 09:53:00,794 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 09:53:00,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 09:53:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:53:00,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 09:53:00,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 09:53:00,815 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2024-11-01 09:53:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:53:00,863 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-01 09:53:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 09:53:00,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 5 [2024-11-01 09:53:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:53:00,870 INFO L225 Difference]: With dead ends: 18 [2024-11-01 09:53:00,870 INFO L226 Difference]: Without dead ends: 10 [2024-11-01 09:53:00,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-01 09:53:00,874 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 09:53:00,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 09:53:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-01 09:53:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-01 09:53:00,896 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) [2024-11-01 09:53:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-01 09:53:00,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-01 09:53:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:53:00,898 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-01 09:53:00,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2024-11-01 09:53:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-01 09:53:00,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-01 09:53:00,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:53:00,899 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-01 09:53:00,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-01 09:53:01,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 09:53:01,102 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:53:01,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:53:01,102 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-01 09:53:01,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:53:01,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348144501] [2024-11-01 09:53:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:53:01,103 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:53:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:53:01,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 09:53:01,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-01 09:53:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:53:01,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-01 09:53:01,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:53:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:53:01,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:53:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:53:01,706 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:53:01,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348144501] [2024-11-01 09:53:01,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1348144501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 09:53:01,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 09:53:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 09:53:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886009248] [2024-11-01 09:53:01,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 09:53:01,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 09:53:01,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:53:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 09:53:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-01 09:53:01,708 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2024-11-01 09:53:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:53:01,777 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-11-01 09:53:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 09:53:01,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 [2024-11-01 09:53:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:53:01,778 INFO L225 Difference]: With dead ends: 15 [2024-11-01 09:53:01,778 INFO L226 Difference]: Without dead ends: 13 [2024-11-01 09:53:01,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-01 09:53:01,779 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 09:53:01,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 09:53:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-01 09:53:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-01 09:53:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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) [2024-11-01 09:53:01,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-01 09:53:01,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-11-01 09:53:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:53:01,782 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-01 09:53:01,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2024-11-01 09:53:01,783 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-01 09:53:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-01 09:53:01,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:53:01,784 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-01 09:53:01,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-01 09:53:01,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 09:53:01,986 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:53:01,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:53:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2024-11-01 09:53:01,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:53:01,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770412238] [2024-11-01 09:53:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:53:01,987 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:53:01,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:53:01,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 09:53:01,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-01 09:53:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:53:02,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-01 09:53:02,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:53:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:53:02,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:53:03,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:53:03,896 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:53:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770412238] [2024-11-01 09:53:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [770412238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 09:53:03,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 09:53:03,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-01 09:53:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805174567] [2024-11-01 09:53:03,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 09:53:03,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-01 09:53:03,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:53:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-01 09:53:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-01 09:53:03,899 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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) [2024-11-01 09:53:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:53:04,112 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2024-11-01 09:53:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-01 09:53:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 11 [2024-11-01 09:53:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:53:04,113 INFO L225 Difference]: With dead ends: 21 [2024-11-01 09:53:04,113 INFO L226 Difference]: Without dead ends: 19 [2024-11-01 09:53:04,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-01 09:53:04,114 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 09:53:04,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 09:53:04,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-01 09:53:04,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2024-11-01 09:53:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2024-11-01 09:53:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-11-01 09:53:04,118 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2024-11-01 09:53:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:53:04,118 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-11-01 09:53:04,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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) [2024-11-01 09:53:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-11-01 09:53:04,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-01 09:53:04,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:53:04,119 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-11-01 09:53:04,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-01 09:53:04,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 09:53:04,320 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:53:04,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:53:04,320 INFO L85 PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 3 times [2024-11-01 09:53:04,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:53:04,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143744599] [2024-11-01 09:53:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:53:04,321 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:53:04,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:53:04,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 09:53:04,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-01 09:53:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:53:04,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-01 09:53:04,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:53:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:53:04,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:53:31,989 WARN L286 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 490 DAG size of output: 487 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-01 09:53:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:53:52,338 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:53:52,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143744599] [2024-11-01 09:53:52,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1143744599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 09:53:52,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 09:53:52,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-01 09:53:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479597770] [2024-11-01 09:53:52,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 09:53:52,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-01 09:53:52,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:53:52,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-01 09:53:52,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-01 09:53:52,340 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-11-01 09:53:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:53:52,587 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2024-11-01 09:53:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-01 09:53:52,588 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 17 [2024-11-01 09:53:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:53:52,588 INFO L225 Difference]: With dead ends: 18 [2024-11-01 09:53:52,588 INFO L226 Difference]: Without dead ends: 0 [2024-11-01 09:53:52,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2024-11-01 09:53:52,589 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 09:53:52,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 09:53:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-01 09:53:52,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-01 09:53:52,590 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) [2024-11-01 09:53:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-01 09:53:52,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2024-11-01 09:53:52,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:53:52,590 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-01 09:53:52,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-11-01 09:53:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-01 09:53:52,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-01 09:53:52,596 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-01 09:53:52,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-01 09:53:52,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 09:53:52,799 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-01 09:53:52,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-01 09:53:52,848 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-01 09:53:52,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.11 09:53:52 BoogieIcfgContainer [2024-11-01 09:53:52,859 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-01 09:53:52,860 INFO L158 Benchmark]: Toolchain (without parser) took 53311.45ms. Allocated memory was 199.2MB in the beginning and 857.7MB in the end (delta: 658.5MB). Free memory was 175.3MB in the beginning and 760.5MB in the end (delta: -585.2MB). Peak memory consumption was 74.3MB. Max. memory is 8.0GB. [2024-11-01 09:53:52,860 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory was 175.1MB in the beginning and 175.0MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 8.0GB. [2024-11-01 09:53:52,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.57ms. Allocated memory is still 199.2MB. Free memory was 175.3MB in the beginning and 158.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2024-11-01 09:53:52,860 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.82ms. Allocated memory is still 199.2MB. Free memory was 158.1MB in the beginning and 155.4MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-01 09:53:52,860 INFO L158 Benchmark]: Boogie Preprocessor took 49.01ms. Allocated memory is still 199.2MB. Free memory was 155.4MB in the beginning and 152.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-01 09:53:52,861 INFO L158 Benchmark]: RCFGBuilder took 359.11ms. Allocated memory is still 199.2MB. Free memory was 152.2MB in the beginning and 131.7MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2024-11-01 09:53:52,861 INFO L158 Benchmark]: TraceAbstraction took 52584.50ms. Allocated memory was 199.2MB in the beginning and 857.7MB in the end (delta: 658.5MB). Free memory was 130.8MB in the beginning and 760.5MB in the end (delta: -629.6MB). Peak memory consumption was 30.3MB. Max. memory is 8.0GB. [2024-11-01 09:53:52,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory was 175.1MB in the beginning and 175.0MB in the end (delta: 71.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 281.57ms. Allocated memory is still 199.2MB. Free memory was 175.3MB in the beginning and 158.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.82ms. Allocated memory is still 199.2MB. Free memory was 158.1MB in the beginning and 155.4MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.01ms. Allocated memory is still 199.2MB. Free memory was 155.4MB in the beginning and 152.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 359.11ms. Allocated memory is still 199.2MB. Free memory was 152.2MB in the beginning and 131.7MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 52584.50ms. Allocated memory was 199.2MB in the beginning and 857.7MB in the end (delta: 658.5MB). Free memory was 130.8MB in the beginning and 760.5MB in the end (delta: -629.6MB). Peak memory consumption was 30.3MB. 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: 21]: 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, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.4s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 14 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 50.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 74 ConstructedInterpolants, 25 QuantifiedInterpolants, 70786 SizeOfPredicates, 29 NumberOfNonLiveVariables, 451 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/70 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: 92]: Loop Invariant Derived loop invariant: ((((((((((0 == var_7) && (0 == state_27)) && (0 == state_8)) && (0 == state_14)) && (0 == var_12)) && (1 == mask_SORT_1)) && (0 == state_61)) && (0 == state_57)) && (0 == state_40)) && (1 == var_21)) RESULT: Ultimate proved your program to be correct! [2024-11-01 09:53:52,924 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...