/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_amount100_file-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:34:18,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:34:18,097 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 21:34:18,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:34:18,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:34:18,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:34:18,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:34:18,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:34:18,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:34:18,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:34:18,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:34:18,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:34:18,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:34:18,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:34:18,118 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:34:18,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:34:18,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:34:18,119 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:34:18,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:34:18,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:34:18,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:34:18,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:34:18,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:34:18,123 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:34:18,123 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:34:18,123 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:34:18,124 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:34:18,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:34:18,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:34:18,124 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:34:18,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:34:18,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:34:18,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:34:18,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:34:18,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:34:18,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:34:18,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:34:18,126 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:34:18,126 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:34:18,126 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:34:18,126 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:34:18,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:34:18,127 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:34:18,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:34:18,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:34:18,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:34:18,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:34:18,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:34:18,272 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:34:18,272 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:34:18,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-3.i [2024-11-02 21:34:19,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:34:19,913 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:34:19,913 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-3.i [2024-11-02 21:34:19,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31b97b75/b4bc3c4691594dff8fed38a5d5a90b0f/FLAGa485ee8ce [2024-11-02 21:34:20,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e31b97b75/b4bc3c4691594dff8fed38a5d5a90b0f [2024-11-02 21:34:20,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:34:20,324 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:34:20,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:34:20,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:34:20,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:34:20,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8f2a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20, skipping insertion in model container [2024-11-02 21:34:20,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,353 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:34:20,488 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_amount100_file-3.i[915,928] [2024-11-02 21:34:20,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:34:20,563 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:34:20,573 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_amount100_file-3.i[915,928] [2024-11-02 21:34:20,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:34:20,620 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:34:20,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20 WrapperNode [2024-11-02 21:34:20,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:34:20,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:34:20,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:34:20,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:34:20,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,667 INFO L138 Inliner]: procedures = 27, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 210 [2024-11-02 21:34:20,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:34:20,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:34:20,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:34:20,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:34:20,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,714 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 21:34:20,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:34:20,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:34:20,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:34:20,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:34:20,746 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (1/1) ... [2024-11-02 21:34:20,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:34:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:34:20,775 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 21:34:20,779 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 21:34:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:34:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:34:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 21:34:20,798 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 21:34:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:34:20,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:34:20,878 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:34:20,880 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:34:27,764 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-02 21:34:27,764 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:34:27,781 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:34:27,781 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 21:34:27,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:34:27 BoogieIcfgContainer [2024-11-02 21:34:27,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:34:27,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:34:27,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:34:27,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:34:27,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:34:20" (1/3) ... [2024-11-02 21:34:27,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f43e59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:34:27, skipping insertion in model container [2024-11-02 21:34:27,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:34:20" (2/3) ... [2024-11-02 21:34:27,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f43e59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:34:27, skipping insertion in model container [2024-11-02 21:34:27,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:34:27" (3/3) ... [2024-11-02 21:34:27,789 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-3.i [2024-11-02 21:34:27,800 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:34:27,801 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:34:27,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:34:27,860 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;@50668dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:34:27,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:34:27,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 62 states have internal predecessors, (88), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-02 21:34:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-02 21:34:27,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:34:27,884 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:27,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:34:27,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:34:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1577606440, now seen corresponding path program 1 times [2024-11-02 21:34:27,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:34:27,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031740220] [2024-11-02 21:34:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:34:27,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:34:27,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:34:27,902 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 21:34:27,906 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 21:34:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:34:28,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 21:34:28,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:34:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-02 21:34:30,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:34:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-02 21:34:32,678 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:34:32,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031740220] [2024-11-02 21:34:32,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2031740220] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:34:32,679 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:34:32,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 9 [2024-11-02 21:34:32,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755009927] [2024-11-02 21:34:32,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:34:32,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 21:34:32,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:34:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 21:34:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-02 21:34:32,706 INFO L87 Difference]: Start difference. First operand has 94 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 62 states have internal predecessors, (88), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-02 21:34:37,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:34:41,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-02 21:34:46,004 WARN L539 Checker$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 21:34:48,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:34:52,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:34:56,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:00,828 WARN L539 Checker$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 [1] [2024-11-02 21:35:02,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-02 21:35:07,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-02 21:35:11,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:15,737 WARN L539 Checker$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 [1] [2024-11-02 21:35:19,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-02 21:35:24,078 WARN L539 Checker$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 21:35:27,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-02 21:35:27,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:35:27,517 INFO L93 Difference]: Finished difference Result 350 states and 633 transitions. [2024-11-02 21:35:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 21:35:27,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 193 [2024-11-02 21:35:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:35:27,590 INFO L225 Difference]: With dead ends: 350 [2024-11-02 21:35:27,591 INFO L226 Difference]: Without dead ends: 259 [2024-11-02 21:35:27,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-02 21:35:27,598 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 465 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 199 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.5s IncrementalHoareTripleChecker+Time [2024-11-02 21:35:27,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 721 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 115 Invalid, 11 Unknown, 0 Unchecked, 54.5s Time] [2024-11-02 21:35:27,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-02 21:35:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 237. [2024-11-02 21:35:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.4177215189873418) internal successors, (224), 160 states have internal predecessors, (224), 74 states have call successors, (74), 4 states have call predecessors, (74), 4 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-02 21:35:27,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 372 transitions. [2024-11-02 21:35:27,660 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 372 transitions. Word has length 193 [2024-11-02 21:35:27,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:35:27,661 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 372 transitions. [2024-11-02 21:35:27,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-02 21:35:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 372 transitions. [2024-11-02 21:35:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-02 21:35:27,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:35:27,664 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:27,701 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 21:35:27,867 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 21:35:27,868 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:35:27,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:35:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1184579430, now seen corresponding path program 1 times [2024-11-02 21:35:27,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:35:27,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794884233] [2024-11-02 21:35:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:35:27,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:27,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:35:27,872 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 21:35:27,873 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 21:35:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:35:28,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 21:35:28,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:35:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 663 proven. 24 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2024-11-02 21:35:30,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:35:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 144 proven. 27 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2024-11-02 21:35:33,731 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:35:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794884233] [2024-11-02 21:35:33,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [794884233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:35:33,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:35:33,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-02 21:35:33,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469209801] [2024-11-02 21:35:33,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:35:33,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-02 21:35:33,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:35:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-02 21:35:33,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-02 21:35:33,734 INFO L87 Difference]: Start difference. First operand 237 states and 372 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 5 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2024-11-02 21:35:41,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:45,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:47,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:35:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:35:47,798 INFO L93 Difference]: Finished difference Result 383 states and 578 transitions. [2024-11-02 21:35:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-02 21:35:47,859 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 5 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) Word has length 193 [2024-11-02 21:35:47,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:35:47,863 INFO L225 Difference]: With dead ends: 383 [2024-11-02 21:35:47,864 INFO L226 Difference]: Without dead ends: 269 [2024-11-02 21:35:47,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 370 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2024-11-02 21:35:47,870 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 138 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 73 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2024-11-02 21:35:47,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 386 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 323 Invalid, 2 Unknown, 0 Unchecked, 13.3s Time] [2024-11-02 21:35:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-02 21:35:47,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 253. [2024-11-02 21:35:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 170 states have (on average 1.3647058823529412) internal successors, (232), 172 states have internal predecessors, (232), 74 states have call successors, (74), 8 states have call predecessors, (74), 8 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-02 21:35:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 380 transitions. [2024-11-02 21:35:47,942 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 380 transitions. Word has length 193 [2024-11-02 21:35:47,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:35:47,942 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 380 transitions. [2024-11-02 21:35:47,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 5 states have call successors, (36), 3 states have call predecessors, (36), 7 states have return successors, (37), 5 states have call predecessors, (37), 5 states have call successors, (37) [2024-11-02 21:35:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 380 transitions. [2024-11-02 21:35:47,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-02 21:35:47,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:35:47,945 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:47,990 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 21:35:48,149 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 21:35:48,150 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:35:48,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:35:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1879241438, now seen corresponding path program 1 times [2024-11-02 21:35:48,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:35:48,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442138200] [2024-11-02 21:35:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:35:48,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:35:48,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:35:48,156 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 21:35:48,157 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 21:35:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:35:48,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 21:35:48,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:35:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 545 proven. 138 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2024-11-02 21:35:52,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:35:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 15 proven. 72 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2024-11-02 21:35:54,649 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:35:54,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442138200] [2024-11-02 21:35:54,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [442138200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:35:54,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:35:54,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11 [2024-11-02 21:35:54,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735623533] [2024-11-02 21:35:54,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:35:54,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 21:35:54,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:35:54,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 21:35:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-02 21:35:54,651 INFO L87 Difference]: Start difference. First operand 253 states and 380 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 3 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2024-11-02 21:36:01,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:36:05,765 WARN L539 Checker$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 []