/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.vis_arrays_vsa16a_p3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 09:56:32,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 09:56:33,065 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 09:56:33,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 09:56:33,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 09:56:33,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 09:56:33,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 09:56:33,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 09:56:33,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 09:56:33,119 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 09:56:33,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 09:56:33,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 09:56:33,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 09:56:33,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 09:56:33,122 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 09:56:33,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 09:56:33,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 09:56:33,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 09:56:33,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 09:56:33,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 09:56:33,125 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 09:56:33,128 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 09:56:33,129 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 09:56:33,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 09:56:33,129 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 09:56:33,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 09:56:33,130 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 09:56:33,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 09:56:33,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 09:56:33,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 09:56:33,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 09:56:33,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 09:56:33,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 09:56:33,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 09:56:33,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 09:56:33,132 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 09:56:33,132 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 09:56:33,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 09:56:33,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 09:56:33,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 09:56:33,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 09:56:33,134 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 09:56:33,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-01 09:56:33,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 09:56:33,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 09:56:33,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 09:56:33,492 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 09:56:33,492 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 09:56:33,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c [2024-11-01 09:56:34,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 09:56:35,095 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 09:56:35,096 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c [2024-11-01 09:56:35,103 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14076d750/13e9b896bf154ad5abc05d20fbeee841/FLAG8a6ca47d8 [2024-11-01 09:56:35,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14076d750/13e9b896bf154ad5abc05d20fbeee841 [2024-11-01 09:56:35,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 09:56:35,444 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 09:56:35,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 09:56:35,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 09:56:35,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 09:56:35,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cdaf67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35, skipping insertion in model container [2024-11-01 09:56:35,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,474 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 09:56:35,652 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.vis_arrays_vsa16a_p3.c[1260,1273] [2024-11-01 09:56:35,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 09:56:35,717 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 09:56:35,728 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.vis_arrays_vsa16a_p3.c[1260,1273] [2024-11-01 09:56:35,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 09:56:35,784 INFO L204 MainTranslator]: Completed translation [2024-11-01 09:56:35,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35 WrapperNode [2024-11-01 09:56:35,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 09:56:35,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 09:56:35,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 09:56:35,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 09:56:35,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,830 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 133 [2024-11-01 09:56:35,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 09:56:35,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 09:56:35,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 09:56:35,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 09:56:35,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,874 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 09:56:35,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 09:56:35,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 09:56:35,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 09:56:35,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 09:56:35,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (1/1) ... [2024-11-01 09:56:35,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 09:56:35,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 09:56:35,930 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 09:56:35,937 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 09:56:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 09:56:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 09:56:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 09:56:35,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 09:56:36,053 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 09:56:36,055 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 09:56:36,237 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-01 09:56:36,238 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 09:56:36,259 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 09:56:36,259 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 09:56:36,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:56:36 BoogieIcfgContainer [2024-11-01 09:56:36,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 09:56:36,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 09:56:36,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 09:56:36,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 09:56:36,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 09:56:35" (1/3) ... [2024-11-01 09:56:36,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2877974a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:56:36, skipping insertion in model container [2024-11-01 09:56:36,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 09:56:35" (2/3) ... [2024-11-01 09:56:36,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2877974a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 09:56:36, skipping insertion in model container [2024-11-01 09:56:36,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 09:56:36" (3/3) ... [2024-11-01 09:56:36,268 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p3.c [2024-11-01 09:56:36,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 09:56:36,287 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 09:56:36,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 09:56:36,359 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;@66cf419e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 09:56:36,359 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 09:56:36,364 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 09:56:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-01 09:56:36,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:56:36,373 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-01 09:56:36,374 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:56:36,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:56:36,379 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-01 09:56:36,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:56:36,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353362623] [2024-11-01 09:56:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:56:36,393 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:56:36,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:56:36,396 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 09:56:36,397 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 09:56:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:56:36,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-01 09:56:36,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:56:36,847 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 09:56:36,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:56:36,950 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 09:56:36,951 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:56:36,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353362623] [2024-11-01 09:56:36,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [353362623] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 09:56:36,952 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 09:56:36,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 09:56:36,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589343816] [2024-11-01 09:56:36,956 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 09:56:36,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 09:56:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:56:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 09:56:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 09:56:36,984 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 09:56:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:56:37,034 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-01 09:56:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 09:56:37,037 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 09:56:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:56:37,044 INFO L225 Difference]: With dead ends: 18 [2024-11-01 09:56:37,044 INFO L226 Difference]: Without dead ends: 10 [2024-11-01 09:56:37,047 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 09:56:37,050 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 09:56:37,052 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 09:56:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-01 09:56:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-01 09:56:37,072 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 09:56:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-01 09:56:37,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-01 09:56:37,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:56:37,074 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-01 09:56:37,074 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 09:56:37,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-01 09:56:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-01 09:56:37,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:56:37,075 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-01 09:56:37,079 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 09:56:37,277 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 09:56:37,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:56:37,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:56:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-01 09:56:37,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:56:37,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606359986] [2024-11-01 09:56:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:56:37,280 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:56:37,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:56:37,281 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 09:56:37,282 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 09:56:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:56:37,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-01 09:56:37,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:56:37,639 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 09:56:37,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:56:37,878 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 09:56:37,879 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:56:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606359986] [2024-11-01 09:56:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [606359986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 09:56:37,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 09:56:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-01 09:56:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641759372] [2024-11-01 09:56:37,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 09:56:37,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-01 09:56:37,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:56:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-01 09:56:37,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-01 09:56:37,883 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 09:56:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:56:38,084 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-11-01 09:56:38,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-01 09:56:38,085 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 09:56:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:56:38,086 INFO L225 Difference]: With dead ends: 18 [2024-11-01 09:56:38,086 INFO L226 Difference]: Without dead ends: 16 [2024-11-01 09:56:38,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-01 09:56:38,088 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 09:56:38,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 09:56:38,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-01 09:56:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-01 09:56:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 09:56:38,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-01 09:56:38,095 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2024-11-01 09:56:38,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:56:38,095 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-01 09:56:38,095 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 09:56:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-01 09:56:38,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-01 09:56:38,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:56:38,096 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2024-11-01 09:56:38,101 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 09:56:38,300 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 09:56:38,300 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:56:38,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:56:38,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 2 times [2024-11-01 09:56:38,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:56:38,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226328455] [2024-11-01 09:56:38,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:56:38,302 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:56:38,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:56:38,305 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 09:56:38,306 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 09:56:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:56:38,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-01 09:56:38,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:56:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:56:38,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:56:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-01 09:56:39,791 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:56:39,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226328455] [2024-11-01 09:56:39,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1226328455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 09:56:39,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 09:56:39,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-01 09:56:39,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468079984] [2024-11-01 09:56:39,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 09:56:39,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-01 09:56:39,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:56:39,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-01 09:56:39,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-01 09:56:39,794 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 09:56:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:56:40,783 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2024-11-01 09:56:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-01 09:56:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 14 [2024-11-01 09:56:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:56:40,784 INFO L225 Difference]: With dead ends: 32 [2024-11-01 09:56:40,784 INFO L226 Difference]: Without dead ends: 30 [2024-11-01 09:56:40,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-01 09:56:40,789 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-01 09:56:40,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-01 09:56:40,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-01 09:56:40,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-01 09:56:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 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 09:56:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-01 09:56:40,804 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 14 [2024-11-01 09:56:40,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:56:40,805 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-01 09:56:40,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 09:56:40,805 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-01 09:56:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-01 09:56:40,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:56:40,806 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-11-01 09:56:40,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-01 09:56:41,007 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 09:56:41,008 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:56:41,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:56:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 3 times [2024-11-01 09:56:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:56:41,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804746432] [2024-11-01 09:56:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:56:41,009 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:56:41,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:56:41,012 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 09:56:41,014 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 09:56:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:56:41,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-01 09:56:41,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:56:41,658 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 09:56:41,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:56:45,269 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 09:56:45,270 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 09:56:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804746432] [2024-11-01 09:56:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [804746432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 09:56:45,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 09:56:45,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-01 09:56:45,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501029307] [2024-11-01 09:56:45,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 09:56:45,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-01 09:56:45,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 09:56:45,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-01 09:56:45,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-01 09:56:45,277 INFO L87 Difference]: Start difference. First operand 27 states and 28 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 09:56:51,032 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse9 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_6~0#1|))) (let ((.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_12~0#1|)) (.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_14~0#1|)) (.cse34 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_7~0#1|))))))) (.cse13 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_51~0#1|)) (.cse33 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_8~0#1|)) (.cse11 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_49~0#1|))) (let ((.cse30 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse33 .cse11))))))))) (.cse14 (= .cse34 .cse13)) (.cse1 (let ((.cse35 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse34 (_ bv2 32)))))))) (.cse36 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse34)) .cse6))) .cse8))) (and (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse35))))))))))))) .cse36) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse35))))))))))))) (not .cse36)))))) (let ((.cse15 (or (not .cse14) .cse1)) (.cse10 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse34 .cse11))))))))) (.cse19 (= .cse30 .cse13)) (.cse21 (= .cse33 .cse13))) (let ((.cse0 (not .cse21)) (.cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse33 (_ bv2 32)))))))) (.cse23 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse33)) .cse6))) .cse8)) (.cse18 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse30 .cse11))))))))) (.cse20 (not .cse19)) (.cse2 (and .cse15 (or .cse14 (let ((.cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse10 (_ bv2 32)))))))) (.cse32 (= .cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) .cse10)))))))) (and (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse31 (_ bv0 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|)))) .cse3)))) .cse32) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse31 (_ bv1 32)))))))))))))) (not .cse32)))))))) (and (or .cse0 .cse1) (or .cse2 .cse0) (or (and (or (let ((.cse12 (= .cse10 .cse13))) (and (or (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse10 .cse11)))))))))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse7 (_ bv2 32)))))))) (.cse5 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) .cse7))))) .cse8))) (and (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse4))))))))))))) (not .cse5)) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse4))))))))))))) .cse5)))) .cse12) (or (not .cse12) .cse1))) .cse14) .cse15) .cse0) (or (and (or (let ((.cse16 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) .cse18))))) .cse8)) (.cse17 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse18 (_ bv2 32))))))))) (and (or .cse16 (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse17))))))))) .cse3))))) (or (not .cse16) (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse17)))))))))))))))) .cse19) (or .cse20 .cse1)) .cse21) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse22 (_ bv1 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|)))))) (_ bv0 8))) (not .cse23)) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse22 (_ bv0 32)))))))))))))) .cse23) (or .cse21 (and (or .cse19 (let ((.cse27 (= .cse18 .cse13))) (and (or (let ((.cse26 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse18 .cse11)))))))))) (let ((.cse24 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) .cse26))))) .cse8)) (.cse25 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse26 (_ bv2 32))))))))) (and (or .cse24 (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse25)))))))))))))) (or (not .cse24) (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse25))))))))))) (_ bv0 8))))))) .cse27) (or (not .cse27) .cse1)))) (or .cse20 .cse2))) (or .cse21 (let ((.cse28 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse30)) .cse6))) .cse8)) (.cse29 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse30 (_ bv2 32))))))))) (and (or .cse28 (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse29)))))))))))))) (or (not .cse28) (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse29)))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|)))))) (_ bv0 8))))))))))))) is different from false [2024-11-01 09:56:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 09:56:58,910 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-11-01 09:56:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-01 09:56:58,911 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 09:56:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 09:56:58,912 INFO L225 Difference]: With dead ends: 36 [2024-11-01 09:56:58,912 INFO L226 Difference]: Without dead ends: 34 [2024-11-01 09:56:58,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=204, Invalid=501, Unknown=1, NotChecked=50, Total=756 [2024-11-01 09:56:58,914 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-01 09:56:58,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 25 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 9 Unchecked, 0.9s Time] [2024-11-01 09:56:58,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-01 09:56:58,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-11-01 09:56:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 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 09:56:58,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2024-11-01 09:56:58,925 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 17 [2024-11-01 09:56:58,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 09:56:58,926 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2024-11-01 09:56:58,926 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 09:56:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2024-11-01 09:56:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-01 09:56:58,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 09:56:58,927 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1] [2024-11-01 09:56:58,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-01 09:56:59,127 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 09:56:59,128 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 09:56:59,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 09:56:59,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1946645219, now seen corresponding path program 4 times [2024-11-01 09:56:59,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 09:56:59,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392981375] [2024-11-01 09:56:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 09:56:59,129 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 09:56:59,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 09:56:59,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 09:56:59,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-01 09:56:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 09:56:59,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-01 09:56:59,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 09:57:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-01 09:57:04,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 09:57:56,622 WARN L286 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 488 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)