/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_amount100_file-54.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 00:59:38,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 00:59:38,249 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 00:59:38,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 00:59:38,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 00:59:38,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 00:59:38,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 00:59:38,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 00:59:38,274 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 00:59:38,276 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 00:59:38,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 00:59:38,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 00:59:38,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 00:59:38,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 00:59:38,277 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 00:59:38,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 00:59:38,277 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 00:59:38,278 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 00:59:38,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 00:59:38,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 00:59:38,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 00:59:38,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 00:59:38,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 00:59:38,279 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 00:59:38,279 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 00:59:38,279 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 00:59:38,279 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 00:59:38,279 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 00:59:38,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 00:59:38,280 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 00:59:38,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 00:59:38,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 00:59:38,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 00:59:38,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 00:59:38,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:59:38,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 00:59:38,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 00:59:38,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 00:59:38,281 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 00:59:38,281 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 00:59:38,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 00:59:38,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 00:59:38,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 00:59:38,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 00:59:38,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 00:59:38,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 00:59:38,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 00:59:38,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 00:59:38,480 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 00:59:38,480 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 00:59:38,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-54.i [2024-11-03 00:59:39,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 00:59:39,842 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 00:59:39,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-54.i [2024-11-03 00:59:39,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d3be485/88f062d994614896b06e2ee63e389cc8/FLAGbed6d7334 [2024-11-03 00:59:40,258 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3d3be485/88f062d994614896b06e2ee63e389cc8 [2024-11-03 00:59:40,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 00:59:40,260 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 00:59:40,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 00:59:40,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 00:59:40,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 00:59:40,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fcf9379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40, skipping insertion in model container [2024-11-03 00:59:40,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,297 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 00:59:40,409 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-54.i[916,929] [2024-11-03 00:59:40,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:59:40,479 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 00:59:40,487 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-54.i[916,929] [2024-11-03 00:59:40,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:59:40,530 INFO L204 MainTranslator]: Completed translation [2024-11-03 00:59:40,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40 WrapperNode [2024-11-03 00:59:40,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 00:59:40,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 00:59:40,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 00:59:40,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 00:59:40,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,570 INFO L138 Inliner]: procedures = 27, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 246 [2024-11-03 00:59:40,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 00:59:40,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 00:59:40,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 00:59:40,577 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 00:59:40,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,612 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 00:59:40,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,633 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 00:59:40,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 00:59:40,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 00:59:40,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 00:59:40,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (1/1) ... [2024-11-03 00:59:40,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:59:40,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:59:40,673 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 00:59:40,693 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 00:59:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 00:59:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 00:59:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 00:59:40,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 00:59:40,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 00:59:40,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 00:59:40,799 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 00:59:40,800 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 00:59:41,872 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-03 00:59:41,873 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 00:59:41,886 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 00:59:41,886 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 00:59:41,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:59:41 BoogieIcfgContainer [2024-11-03 00:59:41,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 00:59:41,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 00:59:41,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 00:59:41,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 00:59:41,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:59:40" (1/3) ... [2024-11-03 00:59:41,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390a70b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:59:41, skipping insertion in model container [2024-11-03 00:59:41,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:59:40" (2/3) ... [2024-11-03 00:59:41,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390a70b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:59:41, skipping insertion in model container [2024-11-03 00:59:41,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:59:41" (3/3) ... [2024-11-03 00:59:41,895 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-54.i [2024-11-03 00:59:41,907 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 00:59:41,907 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 00:59:41,961 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 00:59:41,966 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;@6b09e06f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 00:59:41,966 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 00:59:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 66 states have (on average 1.393939393939394) internal successors, (92), 67 states have internal predecessors, (92), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-03 00:59:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-03 00:59:41,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:59:41,990 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:41,990 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:59:41,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:59:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1763384431, now seen corresponding path program 1 times [2024-11-03 00:59:42,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:59:42,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690152643] [2024-11-03 00:59:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:59:42,005 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:59:42,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:59:42,008 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 00:59:42,010 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 00:59:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:59:42,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 00:59:42,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:59:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-03 00:59:42,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:59:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-03 00:59:42,841 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:59:42,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690152643] [2024-11-03 00:59:42,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1690152643] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:59:42,845 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:59:42,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 00:59:42,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498223468] [2024-11-03 00:59:42,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:59:42,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 00:59:42,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:59:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 00:59:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 00:59:42,871 INFO L87 Difference]: Start difference. First operand has 113 states, 66 states have (on average 1.393939393939394) internal successors, (92), 67 states have internal predecessors, (92), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-03 00:59:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:59:42,907 INFO L93 Difference]: Finished difference Result 219 states and 398 transitions. [2024-11-03 00:59:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 00:59:42,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 269 [2024-11-03 00:59:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:59:42,916 INFO L225 Difference]: With dead ends: 219 [2024-11-03 00:59:42,916 INFO L226 Difference]: Without dead ends: 109 [2024-11-03 00:59:42,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 536 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 00:59:42,922 INFO L432 NwaCegarLoop]: 172 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, 172 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 00:59:42,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:59:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-03 00:59:42,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-03 00:59:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-03 00:59:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 172 transitions. [2024-11-03 00:59:42,972 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 172 transitions. Word has length 269 [2024-11-03 00:59:42,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:59:42,974 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 172 transitions. [2024-11-03 00:59:42,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-03 00:59:42,975 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 172 transitions. [2024-11-03 00:59:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-03 00:59:42,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:59:42,978 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:42,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 00:59:43,178 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 00:59:43,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:59:43,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:59:43,180 INFO L85 PathProgramCache]: Analyzing trace with hash 935944368, now seen corresponding path program 1 times [2024-11-03 00:59:43,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:59:43,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495521950] [2024-11-03 00:59:43,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:59:43,180 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:59:43,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:59:43,182 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 00:59:43,188 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 00:59:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:59:44,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 00:59:44,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:59:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2025 proven. 204 refuted. 0 times theorem prover too weak. 1555 trivial. 0 not checked. [2024-11-03 00:59:45,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:59:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 114 proven. 141 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2024-11-03 00:59:45,726 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:59:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495521950] [2024-11-03 00:59:45,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [495521950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:59:45,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:59:45,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2024-11-03 00:59:45,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306913863] [2024-11-03 00:59:45,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:59:45,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 00:59:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:59:45,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 00:59:45,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-03 00:59:45,730 INFO L87 Difference]: Start difference. First operand 109 states and 172 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 5 states have call successors, (69), 4 states have call predecessors, (69), 8 states have return successors, (70), 5 states have call predecessors, (70), 5 states have call successors, (70) [2024-11-03 00:59:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:59:49,101 INFO L93 Difference]: Finished difference Result 510 states and 772 transitions. [2024-11-03 00:59:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-03 00:59:49,102 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 5 states have call successors, (69), 4 states have call predecessors, (69), 8 states have return successors, (70), 5 states have call predecessors, (70), 5 states have call successors, (70) Word has length 270 [2024-11-03 00:59:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:59:49,106 INFO L225 Difference]: With dead ends: 510 [2024-11-03 00:59:49,106 INFO L226 Difference]: Without dead ends: 404 [2024-11-03 00:59:49,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 526 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=847, Invalid=2575, Unknown=0, NotChecked=0, Total=3422 [2024-11-03 00:59:49,109 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 474 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-03 00:59:49,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 779 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-03 00:59:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-03 00:59:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 380. [2024-11-03 00:59:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 217 states have (on average 1.2534562211981566) internal successors, (272), 218 states have internal predecessors, (272), 150 states have call successors, (150), 12 states have call predecessors, (150), 12 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2024-11-03 00:59:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 572 transitions. [2024-11-03 00:59:49,158 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 572 transitions. Word has length 270 [2024-11-03 00:59:49,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:59:49,159 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 572 transitions. [2024-11-03 00:59:49,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 5 states have call successors, (69), 4 states have call predecessors, (69), 8 states have return successors, (70), 5 states have call predecessors, (70), 5 states have call successors, (70) [2024-11-03 00:59:49,159 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 572 transitions. [2024-11-03 00:59:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-03 00:59:49,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:59:49,162 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:49,174 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 00:59:49,362 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 00:59:49,363 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:59:49,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:59:49,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2119472895, now seen corresponding path program 1 times [2024-11-03 00:59:49,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:59:49,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631688809] [2024-11-03 00:59:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:59:49,364 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:59:49,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:59:49,365 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 00:59:49,366 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 00:59:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:59:50,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 00:59:50,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:59:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1929 proven. 60 refuted. 0 times theorem prover too weak. 1795 trivial. 0 not checked. [2024-11-03 00:59:50,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:59:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 69 proven. 60 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-03 00:59:50,787 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:59:50,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631688809] [2024-11-03 00:59:50,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [631688809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:59:50,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:59:50,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-03 00:59:50,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735666421] [2024-11-03 00:59:50,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:59:50,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-03 00:59:50,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:59:50,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-03 00:59:50,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 00:59:50,789 INFO L87 Difference]: Start difference. First operand 380 states and 572 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-03 00:59:51,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:59:51,789 INFO L93 Difference]: Finished difference Result 761 states and 1124 transitions. [2024-11-03 00:59:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-03 00:59:51,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 271 [2024-11-03 00:59:51,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:59:51,810 INFO L225 Difference]: With dead ends: 761 [2024-11-03 00:59:51,810 INFO L226 Difference]: Without dead ends: 412 [2024-11-03 00:59:51,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 534 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-03 00:59:51,816 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 124 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-03 00:59:51,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 265 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-03 00:59:51,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-03 00:59:51,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 392. [2024-11-03 00:59:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 226 states have (on average 1.2212389380530972) internal successors, (276), 227 states have internal predecessors, (276), 150 states have call successors, (150), 15 states have call predecessors, (150), 15 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2024-11-03 00:59:51,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 576 transitions. [2024-11-03 00:59:51,868 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 576 transitions. Word has length 271 [2024-11-03 00:59:51,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:59:51,869 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 576 transitions. [2024-11-03 00:59:51,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-03 00:59:51,869 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 576 transitions. [2024-11-03 00:59:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-03 00:59:51,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:59:51,872 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:51,884 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 00:59:52,072 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 00:59:52,073 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:59:52,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:59:52,074 INFO L85 PathProgramCache]: Analyzing trace with hash -684018437, now seen corresponding path program 1 times [2024-11-03 00:59:52,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:59:52,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536547597] [2024-11-03 00:59:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:59:52,074 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:59:52,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:59:52,076 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 00:59:52,076 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 00:59:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:59:52,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:59:52,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:59:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-03 00:59:52,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:59:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-03 00:59:52,658 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:59:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536547597] [2024-11-03 00:59:52,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [536547597] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:59:52,658 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:59:52,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 00:59:52,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377943775] [2024-11-03 00:59:52,658 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:59:52,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 00:59:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:59:52,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 00:59:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 00:59:52,660 INFO L87 Difference]: Start difference. First operand 392 states and 576 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-03 00:59:54,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:59:54,146 INFO L93 Difference]: Finished difference Result 1361 states and 1940 transitions. [2024-11-03 00:59:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 00:59:54,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 271 [2024-11-03 00:59:54,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:59:54,153 INFO L225 Difference]: With dead ends: 1361 [2024-11-03 00:59:54,153 INFO L226 Difference]: Without dead ends: 980 [2024-11-03 00:59:54,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 00:59:54,155 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 296 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-03 00:59:54,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 717 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-03 00:59:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-03 00:59:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 543. [2024-11-03 00:59:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 318 states have (on average 1.2232704402515724) internal successors, (389), 322 states have internal predecessors, (389), 205 states have call successors, (205), 19 states have call predecessors, (205), 19 states have return successors, (205), 201 states have call predecessors, (205), 205 states have call successors, (205) [2024-11-03 00:59:54,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 799 transitions. [2024-11-03 00:59:54,212 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 799 transitions. Word has length 271 [2024-11-03 00:59:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:59:54,213 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 799 transitions. [2024-11-03 00:59:54,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-03 00:59:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 799 transitions. [2024-11-03 00:59:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-03 00:59:54,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:59:54,215 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:54,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 00:59:54,427 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 00:59:54,428 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:59:54,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:59:54,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1998580741, now seen corresponding path program 1 times [2024-11-03 00:59:54,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:59:54,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554142035] [2024-11-03 00:59:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:59:54,429 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:59:54,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:59:54,431 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 00:59:54,432 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 00:59:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:59:55,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 00:59:55,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:59:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-03 00:59:55,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:59:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-03 00:59:55,855 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:59:55,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554142035] [2024-11-03 00:59:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [554142035] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:59:55,856 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:59:55,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2024-11-03 00:59:55,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680049255] [2024-11-03 00:59:55,856 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:59:55,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 00:59:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:59:55,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 00:59:55,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:59:55,857 INFO L87 Difference]: Start difference. First operand 543 states and 799 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2024-11-03 00:59:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:59:56,578 INFO L93 Difference]: Finished difference Result 1055 states and 1549 transitions. [2024-11-03 00:59:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 00:59:56,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 271 [2024-11-03 00:59:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:59:56,597 INFO L225 Difference]: With dead ends: 1055 [2024-11-03 00:59:56,597 INFO L226 Difference]: Without dead ends: 543 [2024-11-03 00:59:56,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 00:59:56,599 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 00:59:56,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 165 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 00:59:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-03 00:59:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2024-11-03 00:59:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 318 states have (on average 1.2138364779874213) internal successors, (386), 322 states have internal predecessors, (386), 205 states have call successors, (205), 19 states have call predecessors, (205), 19 states have return successors, (205), 201 states have call predecessors, (205), 205 states have call successors, (205) [2024-11-03 00:59:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 796 transitions. [2024-11-03 00:59:56,636 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 796 transitions. Word has length 271 [2024-11-03 00:59:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:59:56,637 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 796 transitions. [2024-11-03 00:59:56,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2024-11-03 00:59:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 796 transitions. [2024-11-03 00:59:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-03 00:59:56,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:59:56,638 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:56,652 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 00:59:56,839 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 00:59:56,839 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:59:56,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:59:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 708038653, now seen corresponding path program 1 times [2024-11-03 00:59:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:59:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816334187] [2024-11-03 00:59:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:59:56,840 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:59:56,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:59:56,841 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 00:59:56,842 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 00:59:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:59:58,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-03 00:59:58,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:00:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1005 proven. 18 refuted. 0 times theorem prover too weak. 2761 trivial. 0 not checked. [2024-11-03 01:00:00,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:00:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-03 01:00:02,091 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:00:02,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816334187] [2024-11-03 01:00:02,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1816334187] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 01:00:02,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 01:00:02,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2024-11-03 01:00:02,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106313001] [2024-11-03 01:00:02,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 01:00:02,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 01:00:02,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:00:02,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 01:00:02,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-03 01:00:02,093 INFO L87 Difference]: Start difference. First operand 543 states and 796 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-03 01:00:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:00:08,066 INFO L93 Difference]: Finished difference Result 1526 states and 2222 transitions. [2024-11-03 01:00:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 01:00:08,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 271 [2024-11-03 01:00:08,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:00:08,074 INFO L225 Difference]: With dead ends: 1526 [2024-11-03 01:00:08,074 INFO L226 Difference]: Without dead ends: 1014 [2024-11-03 01:00:08,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-03 01:00:08,078 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 305 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-03 01:00:08,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 479 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-03 01:00:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-03 01:00:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 681. [2024-11-03 01:00:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 388 states have (on average 1.1804123711340206) internal successors, (458), 394 states have internal predecessors, (458), 267 states have call successors, (267), 25 states have call predecessors, (267), 25 states have return successors, (267), 261 states have call predecessors, (267), 267 states have call successors, (267) [2024-11-03 01:00:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 992 transitions. [2024-11-03 01:00:08,149 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 992 transitions. Word has length 271 [2024-11-03 01:00:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:00:08,150 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 992 transitions. [2024-11-03 01:00:08,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-03 01:00:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 992 transitions. [2024-11-03 01:00:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-03 01:00:08,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:00:08,152 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:08,167 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 01:00:08,352 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 01:00:08,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:00:08,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:00:08,353 INFO L85 PathProgramCache]: Analyzing trace with hash 706191611, now seen corresponding path program 1 times [2024-11-03 01:00:08,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:00:08,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176878893] [2024-11-03 01:00:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:00:08,353 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:00:08,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:00:08,354 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 01:00:08,355 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 01:00:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:00:09,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 01:00:09,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:00:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2124 proven. 63 refuted. 0 times theorem prover too weak. 1597 trivial. 0 not checked. [2024-11-03 01:00:10,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:00:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 114 proven. 15 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-03 01:00:10,758 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:00:10,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176878893] [2024-11-03 01:00:10,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1176878893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:00:10,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:00:10,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2024-11-03 01:00:10,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851616663] [2024-11-03 01:00:10,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:00:10,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 01:00:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:00:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 01:00:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-03 01:00:10,760 INFO L87 Difference]: Start difference. First operand 681 states and 992 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2024-11-03 01:00:15,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:00:15,597 INFO L93 Difference]: Finished difference Result 1433 states and 2035 transitions. [2024-11-03 01:00:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-03 01:00:15,611 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 271 [2024-11-03 01:00:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:00:15,616 INFO L225 Difference]: With dead ends: 1433 [2024-11-03 01:00:15,616 INFO L226 Difference]: Without dead ends: 783 [2024-11-03 01:00:15,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2024-11-03 01:00:15,619 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 191 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-03 01:00:15,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 387 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-03 01:00:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-11-03 01:00:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 729. [2024-11-03 01:00:15,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 424 states have (on average 1.1603773584905661) internal successors, (492), 430 states have internal predecessors, (492), 267 states have call successors, (267), 37 states have call predecessors, (267), 37 states have return successors, (267), 261 states have call predecessors, (267), 267 states have call successors, (267) [2024-11-03 01:00:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1026 transitions. [2024-11-03 01:00:15,719 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1026 transitions. Word has length 271 [2024-11-03 01:00:15,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:00:15,719 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1026 transitions. [2024-11-03 01:00:15,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2024-11-03 01:00:15,719 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1026 transitions. [2024-11-03 01:00:15,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-03 01:00:15,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:00:15,720 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:15,734 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 01:00:15,921 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 01:00:15,921 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:00:15,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:00:15,922 INFO L85 PathProgramCache]: Analyzing trace with hash 964357049, now seen corresponding path program 1 times [2024-11-03 01:00:15,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:00:15,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460787177] [2024-11-03 01:00:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:00:15,922 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:00:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:00:15,923 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 01:00:15,924 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 01:00:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:00:17,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-03 01:00:17,661 INFO L278 TraceCheckSpWp]: Computing forward predicates...