/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-88.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:04:21,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:04:21,653 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 01:04:21,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:04:21,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:04:21,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:04:21,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:04:21,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:04:21,691 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:04:21,692 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:04:21,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:04:21,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:04:21,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:04:21,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:04:21,694 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:04:21,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:04:21,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:04:21,698 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:04:21,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:04:21,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:04:21,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:04:21,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:04:21,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:04:21,702 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:04:21,702 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:04:21,702 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:04:21,702 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:04:21,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:04:21,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:04:21,703 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:04:21,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:04:21,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:04:21,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:04:21,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:04:21,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:04:21,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:04:21,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:04:21,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:04:21,705 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:04:21,705 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:04:21,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:04:21,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:04:21,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:04:21,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:04:21,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:04:21,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:04:21,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:04:21,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:04:21,972 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:04:21,973 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:04:21,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-88.i [2024-11-03 01:04:23,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:04:23,615 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:04:23,616 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-88.i [2024-11-03 01:04:23,627 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0cbd44c/092e00a150974cde80d0b51f56e169a4/FLAGded6ecd9b [2024-11-03 01:04:23,649 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0cbd44c/092e00a150974cde80d0b51f56e169a4 [2024-11-03 01:04:23,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:04:23,654 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:04:23,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:04:23,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:04:23,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:04:23,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:04:23" (1/1) ... [2024-11-03 01:04:23,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15da9194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:23, skipping insertion in model container [2024-11-03 01:04:23,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:04:23" (1/1) ... [2024-11-03 01:04:23,706 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:04:23,880 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-88.i[916,929] [2024-11-03 01:04:23,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:04:23,984 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:04:23,995 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-88.i[916,929] [2024-11-03 01:04:24,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:04:24,080 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:04:24,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24 WrapperNode [2024-11-03 01:04:24,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:04:24,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:04:24,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:04:24,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:04:24,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,144 INFO L138 Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 208 [2024-11-03 01:04:24,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:04:24,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:04:24,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:04:24,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:04:24,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,164 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,181 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 01:04:24,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:04:24,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:04:24,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:04:24,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:04:24,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (1/1) ... [2024-11-03 01:04:24,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:04:24,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:04:24,254 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 01:04:24,258 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 01:04:24,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:04:24,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:04:24,286 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:04:24,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:04:24,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:04:24,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:04:24,423 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:04:24,426 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:04:27,278 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-03 01:04:27,278 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:04:27,303 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:04:27,303 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:04:27,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:04:27 BoogieIcfgContainer [2024-11-03 01:04:27,304 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:04:27,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:04:27,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:04:27,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:04:27,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:04:23" (1/3) ... [2024-11-03 01:04:27,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3045de94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:04:27, skipping insertion in model container [2024-11-03 01:04:27,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:04:24" (2/3) ... [2024-11-03 01:04:27,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3045de94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:04:27, skipping insertion in model container [2024-11-03 01:04:27,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:04:27" (3/3) ... [2024-11-03 01:04:27,316 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-88.i [2024-11-03 01:04:27,333 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:04:27,333 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:04:27,400 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:04:27,407 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;@62f48c93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:04:27,408 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:04:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 60 states have internal predecessors, (83), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-03 01:04:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-03 01:04:27,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:04:27,427 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:27,427 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:04:27,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:04:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2142022509, now seen corresponding path program 1 times [2024-11-03 01:04:27,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:04:27,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450934753] [2024-11-03 01:04:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:04:27,440 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:04:27,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:04:27,442 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 01:04:27,443 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 01:04:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:04:28,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:04:28,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:04:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 01:04:29,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:04:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 01:04:30,822 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:04:30,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450934753] [2024-11-03 01:04:30,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1450934753] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:04:30,824 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:04:30,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-03 01:04:30,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921088266] [2024-11-03 01:04:30,826 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:04:30,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-03 01:04:30,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:04:30,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-03 01:04:30,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 01:04:30,866 INFO L87 Difference]: Start difference. First operand has 90 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 60 states have internal predecessors, (83), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 01:04:33,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:33,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:04:33,896 INFO L93 Difference]: Finished difference Result 285 states and 506 transitions. [2024-11-03 01:04:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 01:04:33,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 183 [2024-11-03 01:04:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:04:33,912 INFO L225 Difference]: With dead ends: 285 [2024-11-03 01:04:33,912 INFO L226 Difference]: Without dead ends: 198 [2024-11-03 01:04:33,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 01:04:33,923 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 217 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-03 01:04:33,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 321 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-03 01:04:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-03 01:04:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 162. [2024-11-03 01:04:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 103 states have internal predecessors, (135), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-03 01:04:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 247 transitions. [2024-11-03 01:04:34,023 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 247 transitions. Word has length 183 [2024-11-03 01:04:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:04:34,024 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 247 transitions. [2024-11-03 01:04:34,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 01:04:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 247 transitions. [2024-11-03 01:04:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-03 01:04:34,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:04:34,034 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:34,042 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 01:04:34,234 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 01:04:34,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:04:34,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:04:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1834821879, now seen corresponding path program 1 times [2024-11-03 01:04:34,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:04:34,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342283210] [2024-11-03 01:04:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:04:34,237 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:04:34,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:04:34,240 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 01:04:34,241 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 01:04:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:04:35,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 01:04:35,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:04:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 01:04:41,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:04:42,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 01:04:42,291 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:04:42,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342283210] [2024-11-03 01:04:42,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1342283210] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:04:42,292 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:04:42,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2024-11-03 01:04:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120819080] [2024-11-03 01:04:42,293 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:04:42,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 01:04:42,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:04:42,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 01:04:42,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-03 01:04:42,300 INFO L87 Difference]: Start difference. First operand 162 states and 247 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 01:04:45,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:47,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:04:48,035 INFO L93 Difference]: Finished difference Result 431 states and 659 transitions. [2024-11-03 01:04:48,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 01:04:48,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 184 [2024-11-03 01:04:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:04:48,069 INFO L225 Difference]: With dead ends: 431 [2024-11-03 01:04:48,069 INFO L226 Difference]: Without dead ends: 272 [2024-11-03 01:04:48,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-03 01:04:48,072 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 84 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-03 01:04:48,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 635 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-03 01:04:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-03 01:04:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 216. [2024-11-03 01:04:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 128 states have (on average 1.265625) internal successors, (162), 128 states have internal predecessors, (162), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-03 01:04:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 330 transitions. [2024-11-03 01:04:48,127 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 330 transitions. Word has length 184 [2024-11-03 01:04:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:04:48,128 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 330 transitions. [2024-11-03 01:04:48,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 01:04:48,130 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 330 transitions. [2024-11-03 01:04:48,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-03 01:04:48,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:04:48,135 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:48,158 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 01:04:48,335 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 01:04:48,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:04:48,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:04:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2037443591, now seen corresponding path program 1 times [2024-11-03 01:04:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:04:48,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903243148] [2024-11-03 01:04:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:04:48,337 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:04:48,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:04:48,339 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 01:04:48,340 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 01:04:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:04:49,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 01:04:49,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:04:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 01:04:51,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:04:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 01:04:52,581 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:04:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903243148] [2024-11-03 01:04:52,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [903243148] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:04:52,582 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:04:52,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2024-11-03 01:04:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030798628] [2024-11-03 01:04:52,582 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:04:52,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 01:04:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:04:52,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 01:04:52,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-03 01:04:52,587 INFO L87 Difference]: Start difference. First operand 216 states and 330 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 01:04:56,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:04:59,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:05:00,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:05:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:05:01,059 INFO L93 Difference]: Finished difference Result 871 states and 1334 transitions. [2024-11-03 01:05:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 01:05:01,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 184 [2024-11-03 01:05:01,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:05:01,071 INFO L225 Difference]: With dead ends: 871 [2024-11-03 01:05:01,071 INFO L226 Difference]: Without dead ends: 712 [2024-11-03 01:05:01,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2024-11-03 01:05:01,074 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 603 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-03 01:05:01,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1164 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-03 01:05:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-11-03 01:05:01,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 389. [2024-11-03 01:05:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 243 states have (on average 1.2962962962962963) internal successors, (315), 243 states have internal predecessors, (315), 140 states have call successors, (140), 5 states have call predecessors, (140), 5 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-03 01:05:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 595 transitions. [2024-11-03 01:05:01,197 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 595 transitions. Word has length 184 [2024-11-03 01:05:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:05:01,200 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 595 transitions. [2024-11-03 01:05:01,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-03 01:05:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 595 transitions. [2024-11-03 01:05:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-03 01:05:01,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:05:01,205 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:01,226 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 01:05:01,406 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 01:05:01,407 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:05:01,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:05:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash -932588406, now seen corresponding path program 1 times [2024-11-03 01:05:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:05:01,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976862320] [2024-11-03 01:05:01,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:05:01,408 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:05:01,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:05:01,409 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 01:05:01,411 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 01:05:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:05:01,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:05:01,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:05:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 01:05:03,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:05:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 01:05:04,297 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:05:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976862320] [2024-11-03 01:05:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1976862320] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:05:04,297 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:05:04,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2024-11-03 01:05:04,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445460034] [2024-11-03 01:05:04,298 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:05:04,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 01:05:04,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:05:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 01:05:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 01:05:04,299 INFO L87 Difference]: Start difference. First operand 389 states and 595 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-03 01:05:06,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:05:09,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:05:09,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:05:09,167 INFO L93 Difference]: Finished difference Result 798 states and 1215 transitions. [2024-11-03 01:05:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 01:05:09,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 184 [2024-11-03 01:05:09,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:05:09,205 INFO L225 Difference]: With dead ends: 798 [2024-11-03 01:05:09,206 INFO L226 Difference]: Without dead ends: 466 [2024-11-03 01:05:09,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 01:05:09,208 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 145 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-03 01:05:09,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 366 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-03 01:05:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-03 01:05:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 396. [2024-11-03 01:05:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 250 states have (on average 1.272) internal successors, (318), 250 states have internal predecessors, (318), 140 states have call successors, (140), 5 states have call predecessors, (140), 5 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-03 01:05:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 598 transitions. [2024-11-03 01:05:09,279 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 598 transitions. Word has length 184 [2024-11-03 01:05:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:05:09,279 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 598 transitions. [2024-11-03 01:05:09,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-03 01:05:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 598 transitions. [2024-11-03 01:05:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-03 01:05:09,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:05:09,283 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:09,294 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 01:05:09,484 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 01:05:09,484 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:05:09,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:05:09,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1886656226, now seen corresponding path program 1 times [2024-11-03 01:05:09,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:05:09,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422546803] [2024-11-03 01:05:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:05:09,486 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:05:09,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:05:09,487 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 01:05:09,488 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 01:05:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:05:12,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-03 01:05:12,388 INFO L278 TraceCheckSpWp]: Computing forward predicates...