/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-45.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:28:59,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:28:59,136 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 01:28:59,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:28:59,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:28:59,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:28:59,168 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:28:59,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:28:59,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:28:59,170 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:28:59,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:28:59,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:28:59,171 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:28:59,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:28:59,172 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:28:59,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:28:59,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:28:59,173 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:28:59,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:28:59,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:28:59,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:28:59,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:28:59,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:28:59,178 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:28:59,178 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:28:59,178 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:28:59,179 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:28:59,179 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:28:59,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:28:59,179 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:28:59,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:28:59,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:28:59,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:28:59,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:28:59,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:28:59,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:28:59,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:28:59,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:28:59,181 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:28:59,182 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:59,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:28:59,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:28:59,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:28:59,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:28:59,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:28:59,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:28:59,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:28:59,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:28:59,428 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:28:59,429 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:28:59,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-45.i [2024-11-03 01:29:00,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:29:01,030 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:29:01,031 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-45.i [2024-11-03 01:29:01,040 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0f30975/fd1f9202a7db44ecb0e717e92e66eec7/FLAG1cd3781e1 [2024-11-03 01:29:01,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0f30975/fd1f9202a7db44ecb0e717e92e66eec7 [2024-11-03 01:29:01,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:29:01,060 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:29:01,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:29:01,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:29:01,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:29:01,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b72ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01, skipping insertion in model container [2024-11-03 01:29:01,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:29:01,255 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-45.i[915,928] [2024-11-03 01:29:01,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:29:01,308 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:29:01,320 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-45.i[915,928] [2024-11-03 01:29:01,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:29:01,354 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:29:01,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01 WrapperNode [2024-11-03 01:29:01,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:29:01,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:29:01,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:29:01,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:29:01,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,393 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2024-11-03 01:29:01,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:29:01,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:29:01,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:29:01,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:29:01,404 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,422 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 01:29:01,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:29:01,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:29:01,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:29:01,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:29:01,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (1/1) ... [2024-11-03 01:29:01,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:29:01,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:29:01,475 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 01:29:01,478 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 01:29:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:29:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:29:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:29:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:29:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:29:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:29:01,584 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:29:01,586 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:29:02,490 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-03 01:29:02,490 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:29:02,501 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:29:02,501 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:29:02,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:29:02 BoogieIcfgContainer [2024-11-03 01:29:02,501 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:29:02,504 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:29:02,504 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:29:02,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:29:02,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:29:01" (1/3) ... [2024-11-03 01:29:02,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9eea50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:29:02, skipping insertion in model container [2024-11-03 01:29:02,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:29:01" (2/3) ... [2024-11-03 01:29:02,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9eea50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:29:02, skipping insertion in model container [2024-11-03 01:29:02,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:29:02" (3/3) ... [2024-11-03 01:29:02,511 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-45.i [2024-11-03 01:29:02,526 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:29:02,526 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:29:02,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:29:02,581 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;@cfeff5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:29:02,581 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:29:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-03 01:29:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-03 01:29:02,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:29:02,595 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:02,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:29:02,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:29:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2122602353, now seen corresponding path program 1 times [2024-11-03 01:29:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:29:02,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204677925] [2024-11-03 01:29:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:29:02,608 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:02,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:29:02,610 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 01:29:02,611 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 01:29:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:29:03,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-03 01:29:03,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:29:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 348 proven. 90 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-03 01:29:04,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:29:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 54 proven. 99 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2024-11-03 01:29:09,161 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:29:09,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204677925] [2024-11-03 01:29:09,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [204677925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:29:09,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:29:09,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2024-11-03 01:29:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359097942] [2024-11-03 01:29:09,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:29:09,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-03 01:29:09,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:29:09,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-03 01:29:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-03 01:29:09,191 INFO L87 Difference]: Start difference. First operand has 54 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 20 states have internal predecessors, (59), 7 states have call successors, (31), 4 states have call predecessors, (31), 8 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-03 01:29:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:29:16,934 INFO L93 Difference]: Finished difference Result 180 states and 299 transitions. [2024-11-03 01:29:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-03 01:29:16,939 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 20 states have internal predecessors, (59), 7 states have call successors, (31), 4 states have call predecessors, (31), 8 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 119 [2024-11-03 01:29:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:29:16,950 INFO L225 Difference]: With dead ends: 180 [2024-11-03 01:29:16,950 INFO L226 Difference]: Without dead ends: 129 [2024-11-03 01:29:16,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=589, Invalid=1573, Unknown=0, NotChecked=0, Total=2162 [2024-11-03 01:29:16,961 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 211 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-03 01:29:16,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 317 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-03 01:29:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-03 01:29:17,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 119. [2024-11-03 01:29:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 72 states have (on average 1.125) internal successors, (81), 72 states have internal predecessors, (81), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-03 01:29:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2024-11-03 01:29:17,049 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 119 [2024-11-03 01:29:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:29:17,050 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2024-11-03 01:29:17,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 20 states have internal predecessors, (59), 7 states have call successors, (31), 4 states have call predecessors, (31), 8 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-03 01:29:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2024-11-03 01:29:17,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-03 01:29:17,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:29:17,053 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:17,061 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 01:29:17,254 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 01:29:17,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:29:17,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:29:17,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2120755311, now seen corresponding path program 1 times [2024-11-03 01:29:17,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:29:17,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850599095] [2024-11-03 01:29:17,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:29:17,257 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:29:17,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:29:17,258 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 01:29:17,260 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 01:29:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:29:17,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-03 01:29:17,766 INFO L278 TraceCheckSpWp]: Computing forward predicates...