/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-86.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:34:22,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:34:22,915 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 01:34:22,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:34:22,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:34:22,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:34:22,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:34:22,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:34:22,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:34:22,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:34:22,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:34:22,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:34:22,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:34:22,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:34:22,948 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:34:22,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:34:22,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:34:22,950 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:34:22,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:34:22,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:34:22,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:34:22,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:34:22,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:34:22,952 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:34:22,953 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:34:22,953 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:34:22,953 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:34:22,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:34:22,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:34:22,953 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:34:22,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:34:22,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:34:22,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:34:22,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:34:22,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:34:22,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:34:22,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:34:22,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:34:22,955 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:34:22,956 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:22,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:34:22,956 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:34:22,956 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:34:22,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:34:22,956 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:23,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:34:23,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:34:23,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:34:23,199 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:34:23,199 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:34:23,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-86.i [2024-11-03 01:34:24,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:34:24,749 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:34:24,750 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-86.i [2024-11-03 01:34:24,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98616101d/0317e88840214e458e324fb5001234cd/FLAG8a452331d [2024-11-03 01:34:24,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98616101d/0317e88840214e458e324fb5001234cd [2024-11-03 01:34:24,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:34:24,770 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:34:24,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:34:24,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:34:24,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:34:24,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:34:24" (1/1) ... [2024-11-03 01:34:24,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@591de8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:24, skipping insertion in model container [2024-11-03 01:34:24,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:34:24" (1/1) ... [2024-11-03 01:34:24,796 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:34:24,972 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_amount25_file-86.i[915,928] [2024-11-03 01:34:25,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:34:25,037 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:34:25,046 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_amount25_file-86.i[915,928] [2024-11-03 01:34:25,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:34:25,083 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:34:25,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25 WrapperNode [2024-11-03 01:34:25,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:34:25,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:34:25,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:34:25,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:34:25,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,122 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2024-11-03 01:34:25,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:34:25,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:34:25,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:34:25,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:34:25,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,139 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,160 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 01:34:25,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:34:25,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:34:25,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:34:25,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:34:25,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (1/1) ... [2024-11-03 01:34:25,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:34:25,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:34:25,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 01:34:25,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 01:34:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:34:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:34:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:34:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:34:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:34:25,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:34:25,324 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:34:25,325 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:34:25,625 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-03 01:34:25,626 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:34:25,643 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:34:25,644 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:34:25,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:34:25 BoogieIcfgContainer [2024-11-03 01:34:25,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:34:25,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:34:25,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:34:25,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:34:25,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:34:24" (1/3) ... [2024-11-03 01:34:25,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ed9343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:34:25, skipping insertion in model container [2024-11-03 01:34:25,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:25" (2/3) ... [2024-11-03 01:34:25,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ed9343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:34:25, skipping insertion in model container [2024-11-03 01:34:25,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:34:25" (3/3) ... [2024-11-03 01:34:25,655 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-86.i [2024-11-03 01:34:25,668 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:34:25,668 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:34:25,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:34:25,749 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;@1c6e4b90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:34:25,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:34:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-03 01:34:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 01:34:25,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:34:25,763 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:34:25,763 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:34:25,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:34:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1174992419, now seen corresponding path program 1 times [2024-11-03 01:34:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:34:25,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242527278] [2024-11-03 01:34:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:34:25,776 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:25,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:34:25,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:34:25,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 01:34:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:34:25,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 01:34:25,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:34:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-03 01:34:25,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:34:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-03 01:34:26,040 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:34:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242527278] [2024-11-03 01:34:26,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1242527278] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:34:26,041 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:34:26,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 01:34:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065303276] [2024-11-03 01:34:26,044 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:34:26,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 01:34:26,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:34:26,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 01:34:26,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:34:26,068 INFO L87 Difference]: Start difference. First operand has 51 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:34:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:34:26,089 INFO L93 Difference]: Finished difference Result 95 states and 161 transitions. [2024-11-03 01:34:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 01:34:26,091 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108 [2024-11-03 01:34:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:34:26,098 INFO L225 Difference]: With dead ends: 95 [2024-11-03 01:34:26,098 INFO L226 Difference]: Without dead ends: 47 [2024-11-03 01:34:26,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:34:26,106 INFO L432 NwaCegarLoop]: 68 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, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:34:26,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:34:26,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-03 01:34:26,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-03 01:34:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-03 01:34:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2024-11-03 01:34:26,145 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 108 [2024-11-03 01:34:26,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:34:26,146 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2024-11-03 01:34:26,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:34:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2024-11-03 01:34:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 01:34:26,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:34:26,152 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:34:26,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 01:34:26,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:26,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:34:26,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:34:26,354 INFO L85 PathProgramCache]: Analyzing trace with hash 510743009, now seen corresponding path program 1 times [2024-11-03 01:34:26,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:34:26,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910535732] [2024-11-03 01:34:26,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:34:26,354 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:26,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:34:26,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:34:26,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 01:34:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:34:26,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 01:34:26,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:34:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 106 proven. 3 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-03 01:34:26,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:34:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 01:34:26,898 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:34:26,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910535732] [2024-11-03 01:34:26,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1910535732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:34:26,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:34:26,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-03 01:34:26,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416952723] [2024-11-03 01:34:26,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:34:26,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 01:34:26,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:34:26,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 01:34:26,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 01:34:26,902 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-03 01:34:27,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:34:27,414 INFO L93 Difference]: Finished difference Result 173 states and 249 transitions. [2024-11-03 01:34:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 01:34:27,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 108 [2024-11-03 01:34:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:34:27,418 INFO L225 Difference]: With dead ends: 173 [2024-11-03 01:34:27,418 INFO L226 Difference]: Without dead ends: 129 [2024-11-03 01:34:27,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2024-11-03 01:34:27,421 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 141 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 01:34:27,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 241 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 01:34:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-03 01:34:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2024-11-03 01:34:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 67 states have internal predecessors, (76), 49 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-03 01:34:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 174 transitions. [2024-11-03 01:34:27,450 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 174 transitions. Word has length 108 [2024-11-03 01:34:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:34:27,451 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 174 transitions. [2024-11-03 01:34:27,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-03 01:34:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 174 transitions. [2024-11-03 01:34:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 01:34:27,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:34:27,452 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:34:27,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 01:34:27,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:27,656 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:34:27,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:34:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash 512590051, now seen corresponding path program 1 times [2024-11-03 01:34:27,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:34:27,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603013775] [2024-11-03 01:34:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:34:27,658 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:27,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:34:27,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:34:27,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 01:34:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:34:27,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:34:27,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:34:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:34:28,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:34:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:34:28,579 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:34:28,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603013775] [2024-11-03 01:34:28,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [603013775] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:34:28,580 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:34:28,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2024-11-03 01:34:28,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650457251] [2024-11-03 01:34:28,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:34:28,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 01:34:28,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:34:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 01:34:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 01:34:28,582 INFO L87 Difference]: Start difference. First operand 120 states and 174 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 01:34:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:34:28,757 INFO L93 Difference]: Finished difference Result 262 states and 373 transitions. [2024-11-03 01:34:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 01:34:28,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 108 [2024-11-03 01:34:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:34:28,772 INFO L225 Difference]: With dead ends: 262 [2024-11-03 01:34:28,772 INFO L226 Difference]: Without dead ends: 168 [2024-11-03 01:34:28,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 01:34:28,774 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 24 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 01:34:28,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 172 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 01:34:28,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-03 01:34:28,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2024-11-03 01:34:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 92 states have (on average 1.1304347826086956) internal successors, (104), 93 states have internal predecessors, (104), 66 states have call successors, (66), 6 states have call predecessors, (66), 6 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-03 01:34:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 236 transitions. [2024-11-03 01:34:28,813 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 236 transitions. Word has length 108 [2024-11-03 01:34:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:34:28,814 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 236 transitions. [2024-11-03 01:34:28,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 01:34:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 236 transitions. [2024-11-03 01:34:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 01:34:28,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:34:28,819 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:34:28,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 01:34:29,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:29,026 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:34:29,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:34:29,027 INFO L85 PathProgramCache]: Analyzing trace with hash 569848353, now seen corresponding path program 1 times [2024-11-03 01:34:29,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:34:29,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724602990] [2024-11-03 01:34:29,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:34:29,027 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:29,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:34:29,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:34:29,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 01:34:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:34:29,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-03 01:34:29,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:34:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 234 proven. 159 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-03 01:34:43,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:01,053 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:01,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724602990] [2024-11-03 01:35:01,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1724602990] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 01:35:01,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 01:35:01,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [24] total 31 [2024-11-03 01:35:01,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780707569] [2024-11-03 01:35:01,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 01:35:01,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-03 01:35:01,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:01,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-03 01:35:01,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2024-11-03 01:35:01,059 INFO L87 Difference]: Start difference. First operand 165 states and 236 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:08,575 INFO L93 Difference]: Finished difference Result 237 states and 313 transitions. [2024-11-03 01:35:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 01:35:08,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108 [2024-11-03 01:35:08,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:08,582 INFO L225 Difference]: With dead ends: 237 [2024-11-03 01:35:08,583 INFO L226 Difference]: Without dead ends: 235 [2024-11-03 01:35:08,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2024-11-03 01:35:08,588 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 103 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-03 01:35:08,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 314 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-03 01:35:08,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-03 01:35:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 214. [2024-11-03 01:35:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 136 states have internal predecessors, (150), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-03 01:35:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 290 transitions. [2024-11-03 01:35:08,630 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 290 transitions. Word has length 108 [2024-11-03 01:35:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:08,630 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 290 transitions. [2024-11-03 01:35:08,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 290 transitions. [2024-11-03 01:35:08,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 01:35:08,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:08,632 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:08,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-03 01:35:08,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:08,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:08,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash 174974301, now seen corresponding path program 1 times [2024-11-03 01:35:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:08,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78150884] [2024-11-03 01:35:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:08,835 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:08,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:08,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:08,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 01:35:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:09,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-03 01:35:09,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:18,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:28,948 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:28,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78150884] [2024-11-03 01:35:28,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [78150884] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:35:28,948 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:35:28,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 12 [2024-11-03 01:35:28,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650496352] [2024-11-03 01:35:28,948 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:35:28,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 01:35:28,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 01:35:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-03 01:35:28,950 INFO L87 Difference]: Start difference. First operand 214 states and 290 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:29,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:29,500 INFO L93 Difference]: Finished difference Result 240 states and 316 transitions. [2024-11-03 01:35:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 01:35:29,501 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108 [2024-11-03 01:35:29,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:29,503 INFO L225 Difference]: With dead ends: 240 [2024-11-03 01:35:29,503 INFO L226 Difference]: Without dead ends: 238 [2024-11-03 01:35:29,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-03 01:35:29,503 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 24 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 01:35:29,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 495 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 01:35:29,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-03 01:35:29,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 214. [2024-11-03 01:35:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 136 states have internal predecessors, (149), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-03 01:35:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 289 transitions. [2024-11-03 01:35:29,545 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 289 transitions. Word has length 108 [2024-11-03 01:35:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:29,546 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 289 transitions. [2024-11-03 01:35:29,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 289 transitions. [2024-11-03 01:35:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 01:35:29,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:29,547 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:29,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 01:35:29,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:29,748 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:29,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:29,748 INFO L85 PathProgramCache]: Analyzing trace with hash 176821343, now seen corresponding path program 1 times [2024-11-03 01:35:29,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:29,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349305609] [2024-11-03 01:35:29,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:29,748 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:29,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:29,750 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:29,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 01:35:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:29,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 01:35:29,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:30,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:30,097 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:30,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349305609] [2024-11-03 01:35:30,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1349305609] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:35:30,097 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:35:30,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2024-11-03 01:35:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659685040] [2024-11-03 01:35:30,097 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:35:30,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 01:35:30,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 01:35:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:35:30,099 INFO L87 Difference]: Start difference. First operand 214 states and 289 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-03 01:35:30,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:30,150 INFO L93 Difference]: Finished difference Result 345 states and 462 transitions. [2024-11-03 01:35:30,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 01:35:30,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 108 [2024-11-03 01:35:30,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:30,162 INFO L225 Difference]: With dead ends: 345 [2024-11-03 01:35:30,162 INFO L226 Difference]: Without dead ends: 214 [2024-11-03 01:35:30,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:35:30,169 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:35:30,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 133 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:35:30,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-03 01:35:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 211. [2024-11-03 01:35:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 130 states have (on average 1.1) internal successors, (143), 133 states have internal predecessors, (143), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-03 01:35:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2024-11-03 01:35:30,200 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 108 [2024-11-03 01:35:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:30,200 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2024-11-03 01:35:30,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-03 01:35:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2024-11-03 01:35:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-03 01:35:30,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:30,201 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:30,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 01:35:30,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:30,406 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:30,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1923067983, now seen corresponding path program 1 times [2024-11-03 01:35:30,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6128689] [2024-11-03 01:35:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:30,407 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:30,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:30,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:30,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 01:35:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:30,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 01:35:30,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 258 proven. 15 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-11-03 01:35:30,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 01:35:30,887 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:30,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6128689] [2024-11-03 01:35:30,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [6128689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:35:30,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:35:30,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-03 01:35:30,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107782760] [2024-11-03 01:35:30,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:35:30,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 01:35:30,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:30,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 01:35:30,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-03 01:35:30,889 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-03 01:35:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:31,150 INFO L93 Difference]: Finished difference Result 300 states and 389 transitions. [2024-11-03 01:35:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 01:35:31,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 109 [2024-11-03 01:35:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:31,157 INFO L225 Difference]: With dead ends: 300 [2024-11-03 01:35:31,157 INFO L226 Difference]: Without dead ends: 231 [2024-11-03 01:35:31,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-03 01:35:31,160 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 72 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 01:35:31,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 127 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 01:35:31,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-03 01:35:31,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 157. [2024-11-03 01:35:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 95 states have (on average 1.063157894736842) internal successors, (101), 97 states have internal predecessors, (101), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-03 01:35:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 203 transitions. [2024-11-03 01:35:31,180 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 203 transitions. Word has length 109 [2024-11-03 01:35:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:31,181 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 203 transitions. [2024-11-03 01:35:31,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-03 01:35:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 203 transitions. [2024-11-03 01:35:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-03 01:35:31,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:31,183 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:31,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-03 01:35:31,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:31,383 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:31,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1865809681, now seen corresponding path program 1 times [2024-11-03 01:35:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:31,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297082333] [2024-11-03 01:35:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:31,386 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:31,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:31,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:31,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 01:35:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:31,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 01:35:31,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:44,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:53,359 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:53,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297082333] [2024-11-03 01:35:53,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1297082333] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:35:53,359 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:35:53,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2024-11-03 01:35:53,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815531323] [2024-11-03 01:35:53,359 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:35:53,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 01:35:53,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:53,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 01:35:53,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-03 01:35:53,360 INFO L87 Difference]: Start difference. First operand 157 states and 203 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:36:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:36:00,728 INFO L93 Difference]: Finished difference Result 234 states and 295 transitions. [2024-11-03 01:36:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 01:36:00,728 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109 [2024-11-03 01:36:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:36:00,732 INFO L225 Difference]: With dead ends: 234 [2024-11-03 01:36:00,732 INFO L226 Difference]: Without dead ends: 232 [2024-11-03 01:36:00,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2024-11-03 01:36:00,732 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 167 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-03 01:36:00,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 538 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-03 01:36:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-03 01:36:00,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 187. [2024-11-03 01:36:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 115 states have (on average 1.0521739130434782) internal successors, (121), 117 states have internal predecessors, (121), 58 states have call successors, (58), 13 states have call predecessors, (58), 13 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-03 01:36:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 237 transitions. [2024-11-03 01:36:00,778 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 237 transitions. Word has length 109 [2024-11-03 01:36:00,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:36:00,778 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 237 transitions. [2024-11-03 01:36:00,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:36:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 237 transitions. [2024-11-03 01:36:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-03 01:36:00,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:36:00,780 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:36:00,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2024-11-03 01:36:00,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:36:00,981 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:36:00,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:36:00,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1800046754, now seen corresponding path program 1 times [2024-11-03 01:36:00,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:36:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757755563] [2024-11-03 01:36:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:36:00,982 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:36:00,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:36:00,984 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:36:00,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-03 01:36:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:36:01,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-03 01:36:01,481 INFO L278 TraceCheckSpWp]: Computing forward predicates...