/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-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d16_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 21:05:26,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 21:05:26,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 21:05:26,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 21:05:26,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 21:05:26,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 21:05:26,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 21:05:26,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 21:05:26,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 21:05:26,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 21:05:26,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 21:05:26,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 21:05:26,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 21:05:26,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 21:05:26,246 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 21:05:26,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 21:05:26,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 21:05:26,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 21:05:26,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 21:05:26,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 21:05:26,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 21:05:26,248 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 21:05:26,248 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 21:05:26,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 21:05:26,249 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 21:05:26,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 21:05:26,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 21:05:26,250 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 21:05:26,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 21:05:26,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 21:05:26,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 21:05:26,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 21:05:26,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 21:05:26,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 21:05:26,252 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 21:05:26,252 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 21:05:26,252 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 21:05:26,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 21:05:26,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 21:05:26,253 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 21:05:26,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 21:05:26,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-04 21:05:26,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 21:05:26,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 21:05:26,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 21:05:26,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 21:05:26,517 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 21:05:26,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d16_e0.c [2024-11-04 21:05:28,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 21:05:28,366 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 21:05:28,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d16_e0.c [2024-11-04 21:05:28,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49148391/5a1b3d0836ed47688b932f8f0a5ff16b/FLAG7a20d5425 [2024-11-04 21:05:28,403 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e49148391/5a1b3d0836ed47688b932f8f0a5ff16b [2024-11-04 21:05:28,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 21:05:28,408 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 21:05:28,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 21:05:28,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 21:05:28,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 21:05:28,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:05:28" (1/1) ... [2024-11-04 21:05:28,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78401a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:28, skipping insertion in model container [2024-11-04 21:05:28,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:05:28" (1/1) ... [2024-11-04 21:05:28,500 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 21:05:28,751 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d16_e0.c[1271,1284] [2024-11-04 21:05:29,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 21:05:29,200 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 21:05:29,208 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n4_w16_d16_e0.c[1271,1284] [2024-11-04 21:05:29,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 21:05:29,425 INFO L204 MainTranslator]: Completed translation [2024-11-04 21:05:29,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29 WrapperNode [2024-11-04 21:05:29,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 21:05:29,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 21:05:29,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 21:05:29,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 21:05:29,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,638 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3132 [2024-11-04 21:05:29,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 21:05:29,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 21:05:29,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 21:05:29,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 21:05:29,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,675 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,741 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]. [2024-11-04 21:05:29,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 21:05:29,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 21:05:29,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 21:05:29,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 21:05:29,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (1/1) ... [2024-11-04 21:05:29,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 21:05:29,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 21:05:29,897 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) [2024-11-04 21:05:29,904 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 [2024-11-04 21:05:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 21:05:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 21:05:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 21:05:29,927 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 21:05:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 21:05:29,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 21:05:30,473 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 21:05:30,475 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 21:05:32,828 INFO L? ?]: Removed 1026 outVars from TransFormulas that were not future-live. [2024-11-04 21:05:32,829 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 21:05:32,842 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 21:05:32,842 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-04 21:05:32,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:05:32 BoogieIcfgContainer [2024-11-04 21:05:32,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 21:05:32,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 21:05:32,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 21:05:32,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 21:05:32,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 09:05:28" (1/3) ... [2024-11-04 21:05:32,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a61b75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:05:32, skipping insertion in model container [2024-11-04 21:05:32,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:05:29" (2/3) ... [2024-11-04 21:05:32,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a61b75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:05:32, skipping insertion in model container [2024-11-04 21:05:32,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:05:32" (3/3) ... [2024-11-04 21:05:32,850 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n4_w16_d16_e0.c [2024-11-04 21:05:32,865 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 21:05:32,866 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 21:05:32,924 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 21:05:32,930 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;@300f1767, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 21:05:32,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 21:05:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-04 21:05:32,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-04 21:05:32,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 21:05:32,945 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 21:05:32,946 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 21:05:32,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 21:05:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1644883339, now seen corresponding path program 1 times [2024-11-04 21:05:32,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 21:05:32,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107318086] [2024-11-04 21:05:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 21:05:32,961 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 21:05:32,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 21:05:32,964 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) [2024-11-04 21:05:32,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-04 21:05:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 21:05:34,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 21:05:34,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 21:05:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-04 21:05:34,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 21:05:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-04 21:05:34,561 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 21:05:34,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107318086] [2024-11-04 21:05:34,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2107318086] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 21:05:34,562 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 21:05:34,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-04 21:05:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282733383] [2024-11-04 21:05:34,565 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 21:05:34,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 21:05:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 21:05:34,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 21:05:34,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 21:05:34,591 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-04 21:05:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 21:05:34,611 INFO L93 Difference]: Finished difference Result 75 states and 117 transitions. [2024-11-04 21:05:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 21:05:34,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 83 [2024-11-04 21:05:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 21:05:34,619 INFO L225 Difference]: With dead ends: 75 [2024-11-04 21:05:34,619 INFO L226 Difference]: Without dead ends: 37 [2024-11-04 21:05:34,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 21:05:34,625 INFO L432 NwaCegarLoop]: 49 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, 49 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 [2024-11-04 21:05:34,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 21:05:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-04 21:05:34,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-04 21:05:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-04 21:05:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2024-11-04 21:05:34,673 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 83 [2024-11-04 21:05:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 21:05:34,673 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2024-11-04 21:05:34,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-04 21:05:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2024-11-04 21:05:34,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-04 21:05:34,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 21:05:34,677 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 21:05:34,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-04 21:05:34,882 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 [2024-11-04 21:05:34,883 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 21:05:34,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 21:05:34,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1385434447, now seen corresponding path program 1 times [2024-11-04 21:05:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 21:05:34,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100944054] [2024-11-04 21:05:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 21:05:34,884 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 21:05:34,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 21:05:34,888 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) [2024-11-04 21:05:34,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-04 21:05:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 21:05:36,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-04 21:05:36,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 21:05:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-04 21:05:37,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 21:05:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-04 21:05:37,638 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 21:05:37,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100944054] [2024-11-04 21:05:37,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [100944054] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 21:05:37,639 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 21:05:37,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-04 21:05:37,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595103904] [2024-11-04 21:05:37,640 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 21:05:37,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-04 21:05:37,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 21:05:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-04 21:05:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-04 21:05:37,643 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-04 21:05:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 21:05:38,271 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2024-11-04 21:05:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 21:05:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 83 [2024-11-04 21:05:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 21:05:38,276 INFO L225 Difference]: With dead ends: 67 [2024-11-04 21:05:38,276 INFO L226 Difference]: Without dead ends: 65 [2024-11-04 21:05:38,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-04 21:05:38,278 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-04 21:05:38,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-04 21:05:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-04 21:05:38,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-04 21:05:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-04 21:05:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2024-11-04 21:05:38,293 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 83 [2024-11-04 21:05:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 21:05:38,294 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2024-11-04 21:05:38,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-04 21:05:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2024-11-04 21:05:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-04 21:05:38,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 21:05:38,299 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-04 21:05:38,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-04 21:05:38,499 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 [2024-11-04 21:05:38,500 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 21:05:38,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 21:05:38,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2082684701, now seen corresponding path program 1 times [2024-11-04 21:05:38,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 21:05:38,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149331128] [2024-11-04 21:05:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 21:05:38,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 21:05:38,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 21:05:38,504 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) [2024-11-04 21:05:38,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-04 21:05:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 21:05:41,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-04 21:05:41,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 21:05:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-04 21:05:42,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 21:05:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-04 21:05:54,899 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 21:05:54,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149331128] [2024-11-04 21:05:54,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1149331128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 21:05:54,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 21:05:54,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-04 21:05:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286682157] [2024-11-04 21:05:54,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 21:05:54,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-04 21:05:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 21:05:54,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-04 21:05:54,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=172, Unknown=2, NotChecked=0, Total=210 [2024-11-04 21:05:54,904 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 15 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 15 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) [2024-11-04 21:05:56,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 21:05:56,128 INFO L93 Difference]: Finished difference Result 96 states and 134 transitions. [2024-11-04 21:05:56,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-04 21:05:56,129 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 15 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) Word has length 164 [2024-11-04 21:05:56,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 21:05:56,131 INFO L225 Difference]: With dead ends: 96 [2024-11-04 21:05:56,131 INFO L226 Difference]: Without dead ends: 94 [2024-11-04 21:05:56,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=67, Invalid=273, Unknown=2, NotChecked=0, Total=342 [2024-11-04 21:05:56,133 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 16 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-04 21:05:56,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 165 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-04 21:05:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-04 21:05:56,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-04 21:05:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-04 21:05:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2024-11-04 21:05:56,150 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 164 [2024-11-04 21:05:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 21:05:56,151 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2024-11-04 21:05:56,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 15 states have internal predecessors, (74), 8 states have call successors, (52), 1 states have call predecessors, (52), 2 states have return successors, (52), 6 states have call predecessors, (52), 8 states have call successors, (52) [2024-11-04 21:05:56,152 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2024-11-04 21:05:56,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-04 21:05:56,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 21:05:56,157 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-04 21:05:56,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-04 21:05:56,357 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 [2024-11-04 21:05:56,358 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 21:05:56,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 21:05:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1116181263, now seen corresponding path program 2 times [2024-11-04 21:05:56,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 21:05:56,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230459547] [2024-11-04 21:05:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 21:05:56,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 21:05:56,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 21:05:56,362 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) [2024-11-04 21:05:56,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-04 21:06:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 21:06:00,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 3637 conjuncts, 156 conjuncts are in the unsatisfiable core [2024-11-04 21:06:00,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 21:06:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 315 proven. 280 refuted. 0 times theorem prover too weak. 2454 trivial. 0 not checked. [2024-11-04 21:06:05,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 21:06:09,976 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-04 21:06:09,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-04 21:06:09,978 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 21:06:09,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230459547] [2024-11-04 21:06:09,979 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-04 21:06:10,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-04 21:06:10,180 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 [2024-11-04 21:06:10,180 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:842) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:553) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2024-11-04 21:06:10,185 INFO L158 Benchmark]: Toolchain (without parser) took 41777.00ms. Allocated memory was 345.0MB in the beginning and 915.4MB in the end (delta: 570.4MB). Free memory was 279.4MB in the beginning and 812.4MB in the end (delta: -533.1MB). Peak memory consumption was 38.4MB. Max. memory is 8.0GB. [2024-11-04 21:06:10,185 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 206.6MB. Free memory is still 158.3MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-04 21:06:10,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1017.13ms. Allocated memory is still 345.0MB. Free memory was 279.4MB in the beginning and 183.4MB in the end (delta: 95.9MB). Peak memory consumption was 95.4MB. Max. memory is 8.0GB. [2024-11-04 21:06:10,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 210.56ms. Allocated memory is still 345.0MB. Free memory was 183.4MB in the beginning and 160.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2024-11-04 21:06:10,186 INFO L158 Benchmark]: Boogie Preprocessor took 222.89ms. Allocated memory is still 345.0MB. Free memory was 160.4MB in the beginning and 133.6MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2024-11-04 21:06:10,187 INFO L158 Benchmark]: RCFGBuilder took 2978.87ms. Allocated memory was 345.0MB in the beginning and 509.6MB in the end (delta: 164.6MB). Free memory was 133.6MB in the beginning and 416.2MB in the end (delta: -282.6MB). Peak memory consumption was 70.8MB. Max. memory is 8.0GB. [2024-11-04 21:06:10,187 INFO L158 Benchmark]: TraceAbstraction took 37339.44ms. Allocated memory was 509.6MB in the beginning and 915.4MB in the end (delta: 405.8MB). Free memory was 415.7MB in the beginning and 812.4MB in the end (delta: -396.7MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2024-11-04 21:06:10,192 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 206.6MB. Free memory is still 158.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1017.13ms. Allocated memory is still 345.0MB. Free memory was 279.4MB in the beginning and 183.4MB in the end (delta: 95.9MB). Peak memory consumption was 95.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 210.56ms. Allocated memory is still 345.0MB. Free memory was 183.4MB in the beginning and 160.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 222.89ms. Allocated memory is still 345.0MB. Free memory was 160.4MB in the beginning and 133.6MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * RCFGBuilder took 2978.87ms. Allocated memory was 345.0MB in the beginning and 509.6MB in the end (delta: 164.6MB). Free memory was 133.6MB in the beginning and 416.2MB in the end (delta: -282.6MB). Peak memory consumption was 70.8MB. Max. memory is 8.0GB. * TraceAbstraction took 37339.44ms. Allocated memory was 509.6MB in the beginning and 915.4MB in the end (delta: 405.8MB). Free memory was 415.7MB in the beginning and 812.4MB in the end (delta: -396.7MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...