/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_amount500_file-82.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:46:40,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:46:40,537 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 01:46:40,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:46:40,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:46:40,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:46:40,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:46:40,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:46:40,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:46:40,560 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:46:40,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:46:40,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:46:40,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:46:40,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:46:40,561 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:46:40,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:46:40,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:46:40,562 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:46:40,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:46:40,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:46:40,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:46:40,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:46:40,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:46:40,566 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:46:40,566 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:46:40,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:46:40,566 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:46:40,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:46:40,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:46:40,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:46:40,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:46:40,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:46:40,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:46:40,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:46:40,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:46:40,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:46:40,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:46:40,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:46:40,568 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:46:40,568 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:46:40,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:46:40,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:46:40,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:46:40,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:46:40,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:46:40,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:46:40,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:46:40,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:46:40,761 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:46:40,761 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:46:40,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-82.i [2024-11-03 01:46:41,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:46:42,181 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:46:42,182 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-82.i [2024-11-03 01:46:42,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e39e908f4/7bfa93d434c84c818be679555fba5cc3/FLAG62233fcf1 [2024-11-03 01:46:42,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e39e908f4/7bfa93d434c84c818be679555fba5cc3 [2024-11-03 01:46:42,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:46:42,543 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:46:42,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:46:42,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:46:42,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:46:42,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:46:42" (1/1) ... [2024-11-03 01:46:42,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd2256e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:42, skipping insertion in model container [2024-11-03 01:46:42,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:46:42" (1/1) ... [2024-11-03 01:46:42,594 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:46:42,720 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_amount500_file-82.i[916,929] [2024-11-03 01:46:42,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:46:42,907 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:46:42,916 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_amount500_file-82.i[916,929] [2024-11-03 01:46:43,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:46:43,036 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:46:43,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43 WrapperNode [2024-11-03 01:46:43,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:46:43,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:46:43,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:46:43,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:46:43,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,063 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,105 INFO L138 Inliner]: procedures = 27, calls = 77, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 546 [2024-11-03 01:46:43,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:46:43,106 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:46:43,106 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:46:43,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:46:43,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,171 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 01:46:43,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:46:43,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:46:43,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:46:43,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:46:43,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (1/1) ... [2024-11-03 01:46:43,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:46:43,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:46:43,264 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 01:46:43,267 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 01:46:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:46:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:46:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:46:43,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:46:43,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:46:43,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:46:43,400 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:46:43,402 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:47:24,400 INFO L? ?]: Removed 70 outVars from TransFormulas that were not future-live. [2024-11-03 01:47:24,400 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:47:24,421 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:47:24,421 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:47:24,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:24 BoogieIcfgContainer [2024-11-03 01:47:24,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:47:24,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:47:24,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:47:24,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:47:24,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:46:42" (1/3) ... [2024-11-03 01:47:24,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c591bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:24, skipping insertion in model container [2024-11-03 01:47:24,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:46:43" (2/3) ... [2024-11-03 01:47:24,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c591bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:24, skipping insertion in model container [2024-11-03 01:47:24,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:24" (3/3) ... [2024-11-03 01:47:24,430 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-82.i [2024-11-03 01:47:24,441 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:47:24,442 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:47:24,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:47:24,509 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;@20e2388, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:47:24,511 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:47:24,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 154 states have (on average 1.5714285714285714) internal successors, (242), 155 states have internal predecessors, (242), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-03 01:47:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-03 01:47:24,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:47:24,539 INFO L215 NwaCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:24,540 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:47:24,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:47:24,545 INFO L85 PathProgramCache]: Analyzing trace with hash 727439836, now seen corresponding path program 1 times [2024-11-03 01:47:24,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:47:24,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196498552] [2024-11-03 01:47:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:47:24,554 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:47:24,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:47:24,556 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 01:47:24,557 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 01:47:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:47:26,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 01:47:26,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:47:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2024-11-03 01:47:26,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:47:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2024-11-03 01:47:36,475 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:47:36,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196498552] [2024-11-03 01:47:36,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1196498552] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:47:36,476 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:47:36,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 01:47:36,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582882076] [2024-11-03 01:47:36,478 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:47:36,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 01:47:36,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:47:36,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 01:47:36,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:47:36,521 INFO L87 Difference]: Start difference. First operand has 221 states, 154 states have (on average 1.5714285714285714) internal successors, (242), 155 states have internal predecessors, (242), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 1 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 1 states have call predecessors, (64), 1 states have call successors, (64) [2024-11-03 01:47:36,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:47:36,567 INFO L93 Difference]: Finished difference Result 434 states and 796 transitions. [2024-11-03 01:47:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 01:47:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 1 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 1 states have call predecessors, (64), 1 states have call successors, (64) Word has length 422 [2024-11-03 01:47:36,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:47:36,582 INFO L225 Difference]: With dead ends: 434 [2024-11-03 01:47:36,582 INFO L226 Difference]: Without dead ends: 216 [2024-11-03 01:47:36,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 842 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:47:36,588 INFO L432 NwaCegarLoop]: 359 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, 359 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:47:36,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:47:36,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-03 01:47:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-11-03 01:47:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 150 states have (on average 1.54) internal successors, (231), 150 states have internal predecessors, (231), 64 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-03 01:47:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 359 transitions. [2024-11-03 01:47:36,647 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 359 transitions. Word has length 422 [2024-11-03 01:47:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:47:36,650 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 359 transitions. [2024-11-03 01:47:36,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 1 states have call successors, (64), 1 states have call predecessors, (64), 1 states have return successors, (64), 1 states have call predecessors, (64), 1 states have call successors, (64) [2024-11-03 01:47:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 359 transitions. [2024-11-03 01:47:36,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-03 01:47:36,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:47:36,662 INFO L215 NwaCegarLoop]: trace histogram [64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:36,682 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 01:47:36,862 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 01:47:36,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:47:36,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:47:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -644367462, now seen corresponding path program 1 times [2024-11-03 01:47:36,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:47:36,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49049550] [2024-11-03 01:47:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:47:36,864 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:47:36,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:47:36,865 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 01:47:36,870 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 01:47:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:47:38,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:47:38,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:48:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2024-11-03 01:48:08,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:48:28,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2024-11-03 01:48:28,239 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:48:28,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49049550] [2024-11-03 01:48:28,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [49049550] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:48:28,240 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:48:28,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2024-11-03 01:48:28,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986415723] [2024-11-03 01:48:28,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:48:28,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 01:48:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:48:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 01:48:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 01:48:28,249 INFO L87 Difference]: Start difference. First operand 216 states and 359 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (128), 1 states have call predecessors, (128), 1 states have call successors, (128)