/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-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-51.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:16:54,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:16:54,665 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 01:16:54,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:16:54,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:16:54,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:16:54,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:16:54,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:16:54,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:16:54,696 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:16:54,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:16:54,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:16:54,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:16:54,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:16:54,698 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:16:54,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:16:54,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:16:54,699 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:16:54,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:16:54,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:16:54,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:16:54,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:16:54,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:16:54,701 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:16:54,701 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:16:54,701 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:16:54,701 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:16:54,702 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:16:54,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:16:54,702 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:16:54,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:16:54,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:16:54,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:16:54,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:16:54,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:16:54,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:16:54,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:16:54,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:16:54,709 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:16:54,709 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:16:54,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:16:54,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:16:54,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:16:54,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:16:54,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:16:54,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:16:54,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:16:54,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:16:54,971 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:16:54,972 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:16:54,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-51.i [2024-11-03 01:16:56,328 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:16:56,560 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:16:56,561 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-51.i [2024-11-03 01:16:56,571 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa69826f7/6a62257b1b29497080074567c7f90532/FLAGba9d24841 [2024-11-03 01:16:56,582 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa69826f7/6a62257b1b29497080074567c7f90532 [2024-11-03 01:16:56,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:16:56,585 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:16:56,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:16:56,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:16:56,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:16:56,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:16:56" (1/1) ... [2024-11-03 01:16:56,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b44e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:56, skipping insertion in model container [2024-11-03 01:16:56,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:16:56" (1/1) ... [2024-11-03 01:16:56,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:16:56,790 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-51.i[916,929] [2024-11-03 01:16:56,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:16:56,986 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:16:57,000 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-51.i[916,929] [2024-11-03 01:16:57,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:16:57,092 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:16:57,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57 WrapperNode [2024-11-03 01:16:57,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:16:57,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:16:57,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:16:57,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:16:57,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,184 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 384 [2024-11-03 01:16:57,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:16:57,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:16:57,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:16:57,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:16:57,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,209 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,246 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]. [2024-11-03 01:16:57,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,310 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:16:57,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:16:57,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:16:57,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:16:57,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (1/1) ... [2024-11-03 01:16:57,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:16:57,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:16:57,364 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) [2024-11-03 01:16:57,370 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 [2024-11-03 01:16:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:16:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:16:57,395 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:16:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:16:57,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:16:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:16:57,514 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:16:57,516 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:17:07,997 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-03 01:17:07,998 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:17:08,018 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:17:08,019 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:17:08,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:17:08 BoogieIcfgContainer [2024-11-03 01:17:08,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:17:08,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:17:08,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:17:08,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:17:08,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:16:56" (1/3) ... [2024-11-03 01:17:08,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d38bab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:17:08, skipping insertion in model container [2024-11-03 01:17:08,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:16:57" (2/3) ... [2024-11-03 01:17:08,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d38bab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:17:08, skipping insertion in model container [2024-11-03 01:17:08,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:17:08" (3/3) ... [2024-11-03 01:17:08,028 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-51.i [2024-11-03 01:17:08,044 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:17:08,044 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:17:08,128 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:17:08,136 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;@465d2f6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:17:08,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:17:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 103 states have (on average 1.4563106796116505) internal successors, (150), 104 states have internal predecessors, (150), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-03 01:17:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-03 01:17:08,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:17:08,172 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:17:08,172 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:17:08,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:17:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1686381084, now seen corresponding path program 1 times [2024-11-03 01:17:08,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:17:08,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211806252] [2024-11-03 01:17:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:17:08,189 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:17:08,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:17:08,192 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) [2024-11-03 01:17:08,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 01:17:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:17:08,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 01:17:08,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:17:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-03 01:17:08,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:17:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-03 01:17:11,458 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:17:11,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211806252] [2024-11-03 01:17:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1211806252] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:17:11,459 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:17:11,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 01:17:11,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256887572] [2024-11-03 01:17:11,462 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:17:11,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 01:17:11,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:17:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 01:17:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:17:11,487 INFO L87 Difference]: Start difference. First operand has 173 states, 103 states have (on average 1.4563106796116505) internal successors, (150), 104 states have internal predecessors, (150), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (67), 1 states have call predecessors, (67), 2 states have return successors, (67), 2 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-03 01:17:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:17:11,535 INFO L93 Difference]: Finished difference Result 338 states and 627 transitions. [2024-11-03 01:17:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 01:17:11,537 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (67), 1 states have call predecessors, (67), 2 states have return successors, (67), 2 states have call predecessors, (67), 1 states have call successors, (67) Word has length 412 [2024-11-03 01:17:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:17:11,546 INFO L225 Difference]: With dead ends: 338 [2024-11-03 01:17:11,546 INFO L226 Difference]: Without dead ends: 168 [2024-11-03 01:17:11,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:17:11,554 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:17:11,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:17:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-03 01:17:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-03 01:17:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 99 states have (on average 1.404040404040404) internal successors, (139), 99 states have internal predecessors, (139), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-03 01:17:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 273 transitions. [2024-11-03 01:17:11,620 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 273 transitions. Word has length 412 [2024-11-03 01:17:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:17:11,621 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 273 transitions. [2024-11-03 01:17:11,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (67), 1 states have call predecessors, (67), 2 states have return successors, (67), 2 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-03 01:17:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 273 transitions. [2024-11-03 01:17:11,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-03 01:17:11,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:17:11,640 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:17:11,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 01:17:11,841 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 [2024-11-03 01:17:11,841 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:17:11,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:17:11,842 INFO L85 PathProgramCache]: Analyzing trace with hash -735543190, now seen corresponding path program 1 times [2024-11-03 01:17:11,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:17:11,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169682468] [2024-11-03 01:17:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:17:11,843 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:17:11,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:17:11,846 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) [2024-11-03 01:17:11,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 01:17:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:17:12,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 01:17:12,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:17:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-03 01:17:12,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:17:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-03 01:17:15,221 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:17:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169682468] [2024-11-03 01:17:15,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1169682468] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:17:15,222 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:17:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 01:17:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007864225] [2024-11-03 01:17:15,222 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:17:15,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 01:17:15,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:17:15,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 01:17:15,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:17:15,229 INFO L87 Difference]: Start difference. First operand 168 states and 273 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-03 01:17:19,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:17:23,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:17:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:17:23,767 INFO L93 Difference]: Finished difference Result 410 states and 663 transitions. [2024-11-03 01:17:23,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 01:17:23,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 412 [2024-11-03 01:17:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:17:23,777 INFO L225 Difference]: With dead ends: 410 [2024-11-03 01:17:23,777 INFO L226 Difference]: Without dead ends: 245 [2024-11-03 01:17:23,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:17:23,783 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 116 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-03 01:17:23,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 635 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2024-11-03 01:17:23,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-03 01:17:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 242. [2024-11-03 01:17:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 147 states have (on average 1.3945578231292517) internal successors, (205), 148 states have internal predecessors, (205), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-03 01:17:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 389 transitions. [2024-11-03 01:17:23,846 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 389 transitions. Word has length 412 [2024-11-03 01:17:23,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:17:23,847 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 389 transitions. [2024-11-03 01:17:23,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-03 01:17:23,848 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 389 transitions. [2024-11-03 01:17:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-03 01:17:23,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:17:23,858 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:17:23,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-03 01:17:24,058 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 [2024-11-03 01:17:24,059 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:17:24,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:17:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1865051289, now seen corresponding path program 1 times [2024-11-03 01:17:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:17:24,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575803593] [2024-11-03 01:17:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:17:24,060 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:17:24,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:17:24,063 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) [2024-11-03 01:17:24,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 01:17:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:17:24,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:17:24,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:17:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-03 01:17:25,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:17:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-03 01:17:28,896 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:17:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575803593] [2024-11-03 01:17:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1575803593] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:17:28,896 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:17:28,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 01:17:28,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575991765] [2024-11-03 01:17:28,897 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:17:28,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 01:17:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:17:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 01:17:28,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 01:17:28,901 INFO L87 Difference]: Start difference. First operand 242 states and 389 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-03 01:17:34,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:17:38,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:17:42,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:17:46,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:17:50,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:17:54,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:17:58,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:18:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:18:00,461 INFO L93 Difference]: Finished difference Result 1141 states and 1817 transitions. [2024-11-03 01:18:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 01:18:00,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 413 [2024-11-03 01:18:00,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:18:00,472 INFO L225 Difference]: With dead ends: 1141 [2024-11-03 01:18:00,472 INFO L226 Difference]: Without dead ends: 902 [2024-11-03 01:18:00,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 01:18:00,475 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 518 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 72 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2024-11-03 01:18:00,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1098 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 200 Invalid, 7 Unknown, 0 Unchecked, 31.4s Time] [2024-11-03 01:18:00,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2024-11-03 01:18:00,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 467. [2024-11-03 01:18:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 316 states have (on average 1.4430379746835442) internal successors, (456), 319 states have internal predecessors, (456), 146 states have call successors, (146), 4 states have call predecessors, (146), 4 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2024-11-03 01:18:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 748 transitions. [2024-11-03 01:18:00,540 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 748 transitions. Word has length 413 [2024-11-03 01:18:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:18:00,542 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 748 transitions. [2024-11-03 01:18:00,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-03 01:18:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 748 transitions. [2024-11-03 01:18:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-03 01:18:00,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:18:00,551 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:18:00,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 01:18:00,751 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 [2024-11-03 01:18:00,752 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:18:00,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:18:00,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1756982917, now seen corresponding path program 1 times [2024-11-03 01:18:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:18:00,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891632527] [2024-11-03 01:18:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:18:00,753 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:18:00,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:18:00,754 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) [2024-11-03 01:18:00,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 01:18:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:18:01,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:18:01,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:18:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-03 01:18:01,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:18:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-03 01:18:05,117 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:18:05,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891632527] [2024-11-03 01:18:05,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1891632527] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:18:05,117 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:18:05,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 01:18:05,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745364563] [2024-11-03 01:18:05,118 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:18:05,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 01:18:05,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:18:05,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 01:18:05,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 01:18:05,120 INFO L87 Difference]: Start difference. First operand 467 states and 748 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-03 01:18:11,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:18:15,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:18:19,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:18:23,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:18:27,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:18:31,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:18:34,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []