/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-20.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:50:41,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:50:41,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 21:50:41,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:50:41,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:50:41,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:50:41,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:50:41,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:50:41,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:50:41,149 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:50:41,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:50:41,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:50:41,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:50:41,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:50:41,150 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:50:41,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:50:41,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:50:41,155 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:50:41,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:50:41,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:50:41,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:50:41,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:50:41,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:50:41,157 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:50:41,157 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:50:41,157 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:50:41,158 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:50:41,158 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:50:41,160 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:50:41,160 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:50:41,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:50:41,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:50:41,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:50:41,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:50:41,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:50:41,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:50:41,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:50:41,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:50:41,162 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:50:41,162 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:50:41,162 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:50:41,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:50:41,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:50:41,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:50:41,164 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:50:41,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:50:41,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:50:41,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:50:41,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:50:41,437 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:50:41,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-20.i [2024-11-02 21:50:42,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:50:43,153 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:50:43,153 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-20.i [2024-11-02 21:50:43,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30f20e07/67122f99a2ff400994d9c860ab430940/FLAGc12b361d6 [2024-11-02 21:50:43,504 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30f20e07/67122f99a2ff400994d9c860ab430940 [2024-11-02 21:50:43,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:50:43,508 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:50:43,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:50:43,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:50:43,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:50:43,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:50:43" (1/1) ... [2024-11-02 21:50:43,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6457a373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:43, skipping insertion in model container [2024-11-02 21:50:43,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:50:43" (1/1) ... [2024-11-02 21:50:43,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:50:43,741 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-20.i[916,929] [2024-11-02 21:50:43,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:50:43,922 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:50:43,933 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-20.i[916,929] [2024-11-02 21:50:44,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:50:44,036 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:50:44,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44 WrapperNode [2024-11-02 21:50:44,039 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:50:44,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:50:44,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:50:44,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:50:44,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,103 INFO L138 Inliner]: procedures = 27, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 360 [2024-11-02 21:50:44,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:50:44,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:50:44,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:50:44,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:50:44,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,148 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]. [2024-11-02 21:50:44,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,174 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:50:44,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:50:44,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:50:44,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:50:44,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (1/1) ... [2024-11-02 21:50:44,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:50:44,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:50:44,229 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) [2024-11-02 21:50:44,232 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 [2024-11-02 21:50:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:50:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:50:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 21:50:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 21:50:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:50:44,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:50:44,396 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:50:44,398 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:50:56,548 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2024-11-02 21:50:56,549 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:50:56,572 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:50:56,573 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 21:50:56,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:50:56 BoogieIcfgContainer [2024-11-02 21:50:56,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:50:56,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:50:56,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:50:56,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:50:56,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:50:43" (1/3) ... [2024-11-02 21:50:56,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658105ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:50:56, skipping insertion in model container [2024-11-02 21:50:56,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:50:44" (2/3) ... [2024-11-02 21:50:56,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@658105ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:50:56, skipping insertion in model container [2024-11-02 21:50:56,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:50:56" (3/3) ... [2024-11-02 21:50:56,585 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-20.i [2024-11-02 21:50:56,602 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:50:56,602 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:50:56,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:50:56,681 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;@4bf67f9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:50:56,681 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:50:56,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 103 states have (on average 1.4854368932038835) internal successors, (153), 104 states have internal predecessors, (153), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-02 21:50:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-02 21:50:56,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:50:56,713 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:50:56,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:50:56,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:50:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -873228041, now seen corresponding path program 1 times [2024-11-02 21:50:56,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:50:56,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245851763] [2024-11-02 21:50:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:50:56,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:50:56,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:50:56,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:50:56,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 21:50:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:50:57,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 21:50:57,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:50:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2024-11-02 21:50:57,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:51:00,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2024-11-02 21:51:00,160 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:51:00,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245851763] [2024-11-02 21:51:00,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1245851763] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 21:51:00,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 21:51:00,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 21:51:00,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308201158] [2024-11-02 21:51:00,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 21:51:00,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 21:51:00,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:51:00,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 21:51:00,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:51:00,195 INFO L87 Difference]: Start difference. First operand has 155 states, 103 states have (on average 1.4854368932038835) internal successors, (153), 104 states have internal predecessors, (153), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-02 21:51:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:51:00,246 INFO L93 Difference]: Finished difference Result 302 states and 543 transitions. [2024-11-02 21:51:00,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 21:51:00,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 318 [2024-11-02 21:51:00,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:51:00,258 INFO L225 Difference]: With dead ends: 302 [2024-11-02 21:51:00,258 INFO L226 Difference]: Without dead ends: 150 [2024-11-02 21:51:00,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:51:00,266 INFO L432 NwaCegarLoop]: 241 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, 241 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 [2024-11-02 21:51:00,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:51:00,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-02 21:51:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-02 21:51:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 99 states have (on average 1.4444444444444444) internal successors, (143), 99 states have internal predecessors, (143), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-02 21:51:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 241 transitions. [2024-11-02 21:51:00,328 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 241 transitions. Word has length 318 [2024-11-02 21:51:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:51:00,329 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 241 transitions. [2024-11-02 21:51:00,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-02 21:51:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 241 transitions. [2024-11-02 21:51:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-02 21:51:00,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:51:00,336 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:51:00,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 21:51:00,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:51:00,538 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:51:00,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:51:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash -987053719, now seen corresponding path program 1 times [2024-11-02 21:51:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:51:00,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814508822] [2024-11-02 21:51:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:51:00,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:51:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:51:00,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:51:00,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 21:51:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:51:01,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 21:51:01,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:51:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-11-02 21:51:01,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:51:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-11-02 21:51:03,826 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:51:03,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814508822] [2024-11-02 21:51:03,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1814508822] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:51:03,826 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:51:03,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 21:51:03,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723032978] [2024-11-02 21:51:03,827 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:51:03,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 21:51:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:51:03,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 21:51:03,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:51:03,830 INFO L87 Difference]: Start difference. First operand 150 states and 241 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-02 21:51:08,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:51:12,334 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 [] [2024-11-02 21:51:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:51:12,340 INFO L93 Difference]: Finished difference Result 364 states and 586 transitions. [2024-11-02 21:51:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 21:51:12,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 318 [2024-11-02 21:51:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:51:12,464 INFO L225 Difference]: With dead ends: 364 [2024-11-02 21:51:12,464 INFO L226 Difference]: Without dead ends: 217 [2024-11-02 21:51:12,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:51:12,467 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 106 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:51:12,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 547 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2024-11-02 21:51:12,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-02 21:51:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2024-11-02 21:51:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 160 states have (on average 1.50625) internal successors, (241), 161 states have internal predecessors, (241), 51 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-02 21:51:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 343 transitions. [2024-11-02 21:51:12,494 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 343 transitions. Word has length 318 [2024-11-02 21:51:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:51:12,495 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 343 transitions. [2024-11-02 21:51:12,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-02 21:51:12,496 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 343 transitions. [2024-11-02 21:51:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-02 21:51:12,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:51:12,503 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:51:12,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 21:51:12,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:51:12,704 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:51:12,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:51:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2016413017, now seen corresponding path program 1 times [2024-11-02 21:51:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:51:12,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684904139] [2024-11-02 21:51:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:51:12,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:51:12,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:51:12,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:51:12,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 21:51:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:51:13,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:51:13,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:51:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2394 proven. 75 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2024-11-02 21:51:18,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:51:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 69 proven. 75 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2024-11-02 21:51:23,157 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:51:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684904139] [2024-11-02 21:51:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [684904139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:51:23,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:51:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-02 21:51:23,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059695129] [2024-11-02 21:51:23,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:51:23,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 21:51:23,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:51:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 21:51:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-02 21:51:23,165 INFO L87 Difference]: Start difference. First operand 214 states and 343 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2024-11-02 21:51:32,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:51:36,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:51:40,301 WARN L539 Checker$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 [] [2024-11-02 21:51:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:51:40,306 INFO L93 Difference]: Finished difference Result 433 states and 690 transitions. [2024-11-02 21:51:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 21:51:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 318 [2024-11-02 21:51:40,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:51:40,443 INFO L225 Difference]: With dead ends: 433 [2024-11-02 21:51:40,443 INFO L226 Difference]: Without dead ends: 222 [2024-11-02 21:51:40,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-02 21:51:40,445 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 357 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 103 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2024-11-02 21:51:40,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 456 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 252 Invalid, 3 Unknown, 0 Unchecked, 16.8s Time] [2024-11-02 21:51:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-02 21:51:40,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 218. [2024-11-02 21:51:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 163 states have (on average 1.4846625766871167) internal successors, (242), 164 states have internal predecessors, (242), 51 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-02 21:51:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 344 transitions. [2024-11-02 21:51:40,493 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 344 transitions. Word has length 318 [2024-11-02 21:51:40,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:51:40,494 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 344 transitions. [2024-11-02 21:51:40,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 3 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2024-11-02 21:51:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 344 transitions. [2024-11-02 21:51:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-02 21:51:40,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:51:40,499 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:51:40,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 21:51:40,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:51:40,701 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:51:40,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:51:40,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1956528313, now seen corresponding path program 1 times [2024-11-02 21:51:40,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:51:40,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594096860] [2024-11-02 21:51:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:51:40,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:51:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:51:40,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 21:51:40,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 21:51:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:51:41,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 21:51:41,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:51:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2358 proven. 81 refuted. 0 times theorem prover too weak. 2265 trivial. 0 not checked. [2024-11-02 21:51:47,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:51:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 63 proven. 81 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2024-11-02 21:51:53,103 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:51:53,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594096860] [2024-11-02 21:51:53,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [594096860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:51:53,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:51:53,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-02 21:51:53,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113610981] [2024-11-02 21:51:53,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:51:53,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 21:51:53,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:51:53,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 21:51:53,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-02 21:51:53,106 INFO L87 Difference]: Start difference. First operand 218 states and 344 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 3 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2024-11-02 21:52:07,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:52:11,093 WARN L539 Checker$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 [0] [2024-11-02 21:52:15,098 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 [0]