/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:33:15,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:33:15,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-14 00:33:15,381 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:33:15,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:33:15,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:33:15,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:33:15,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:33:15,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:33:15,404 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:33:15,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:33:15,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:33:15,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:33:15,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:33:15,406 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:33:15,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:33:15,406 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:33:15,406 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:33:15,406 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:33:15,406 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:33:15,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:33:15,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:33:15,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:33:15,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:33:15,407 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:33:15,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:33:15,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:33:15,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:33:15,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:33:15,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:33:15,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:33:15,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:33:15,408 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:33:15,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:33:15,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:33:15,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:33:15,651 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:33:15,651 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:33:15,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c [2025-04-14 00:33:16,922 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcd4f563/05706a8710214d6694d77a117d58aa2a/FLAGc1eac9b5d [2025-04-14 00:33:17,121 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:33:17,124 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c [2025-04-14 00:33:17,130 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcd4f563/05706a8710214d6694d77a117d58aa2a/FLAGc1eac9b5d [2025-04-14 00:33:17,924 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdcd4f563/05706a8710214d6694d77a117d58aa2a [2025-04-14 00:33:17,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:33:17,927 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:33:17,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:33:17,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:33:17,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:33:17,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:33:17" (1/1) ... [2025-04-14 00:33:17,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2c0460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:17, skipping insertion in model container [2025-04-14 00:33:17,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:33:17" (1/1) ... [2025-04-14 00:33:17,942 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:33:18,116 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c[3012,3025] [2025-04-14 00:33:18,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:33:18,137 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:33:18,167 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-symm.wvr.c[3012,3025] [2025-04-14 00:33:18,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:33:18,186 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:33:18,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18 WrapperNode [2025-04-14 00:33:18,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:33:18,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:33:18,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:33:18,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:33:18,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,231 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 15, calls inlined = 29, statements flattened = 251 [2025-04-14 00:33:18,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:33:18,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:33:18,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:33:18,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:33:18,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,265 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]. [2025-04-14 00:33:18,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,272 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:33:18,285 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:33:18,285 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:33:18,285 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:33:18,285 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (1/1) ... [2025-04-14 00:33:18,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:33:18,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:33:18,311 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) [2025-04-14 00:33:18,316 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 [2025-04-14 00:33:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:33:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:33:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:33:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 00:33:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 00:33:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:33:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:33:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:33:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:33:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:33:18,334 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:33:18,408 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:33:18,409 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:33:18,705 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:33:18,706 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:33:18,706 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:33:19,093 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:33:19,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:33:19 BoogieIcfgContainer [2025-04-14 00:33:19,094 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:33:19,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:33:19,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:33:19,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:33:19,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:33:17" (1/3) ... [2025-04-14 00:33:19,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0ce1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:33:19, skipping insertion in model container [2025-04-14 00:33:19,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:33:18" (2/3) ... [2025-04-14 00:33:19,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0ce1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:33:19, skipping insertion in model container [2025-04-14 00:33:19,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:33:19" (3/3) ... [2025-04-14 00:33:19,101 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-collitem-symm.wvr.c [2025-04-14 00:33:19,113 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:33:19,114 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-collitem-symm.wvr.c that has 3 procedures, 18 locations, 15 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-14 00:33:19,114 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:33:19,160 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-14 00:33:19,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 17 transitions, 48 flow [2025-04-14 00:33:19,206 INFO L116 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-04-14 00:33:19,209 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-14 00:33:19,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-14 00:33:19,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 17 transitions, 48 flow [2025-04-14 00:33:19,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 14 transitions, 40 flow [2025-04-14 00:33:19,223 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:33:19,233 INFO L340 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;@77cd7d61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:33:19,233 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-14 00:33:19,241 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:33:19,241 INFO L116 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-04-14 00:33:19,241 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-14 00:33:19,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:33:19,243 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:33:19,243 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 00:33:19,247 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:33:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1574422551, now seen corresponding path program 1 times [2025-04-14 00:33:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:33:19,253 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11470221] [2025-04-14 00:33:19,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:33:19,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:33:19,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:33:19,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:33:19,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:33:19,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:33:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:33:21,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:33:21,034 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11470221] [2025-04-14 00:33:21,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11470221] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:33:21,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:33:21,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:33:21,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085390721] [2025-04-14 00:33:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:33:21,042 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:33:21,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:33:21,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:33:21,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:33:21,065 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 17 [2025-04-14 00:33:21,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:33:21,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:33:21,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 17 [2025-04-14 00:33:21,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:33:21,210 INFO L116 PetriNetUnfolderBase]: 27/70 cut-off events. [2025-04-14 00:33:21,210 INFO L117 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-04-14 00:33:21,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 70 events. 27/70 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 187 event pairs, 2 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 118. Up to 36 conditions per place. [2025-04-14 00:33:21,212 INFO L140 encePairwiseOnDemand]: 14/17 looper letters, 13 selfloop transitions, 1 changer transitions 8/24 dead transitions. [2025-04-14 00:33:21,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 24 transitions, 113 flow [2025-04-14 00:33:21,213 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 00:33:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 00:33:21,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 39 transitions. [2025-04-14 00:33:21,221 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2025-04-14 00:33:21,222 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 40 flow. Second operand 4 states and 39 transitions. [2025-04-14 00:33:21,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 24 transitions, 113 flow [2025-04-14 00:33:21,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-14 00:33:21,227 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 39 flow [2025-04-14 00:33:21,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2025-04-14 00:33:21,232 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2025-04-14 00:33:21,232 INFO L485 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 39 flow [2025-04-14 00:33:21,232 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:33:21,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:33:21,232 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:33:21,232 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:33:21,232 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-14 00:33:21,233 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:33:21,233 INFO L85 PathProgramCache]: Analyzing trace with hash 623797635, now seen corresponding path program 2 times [2025-04-14 00:33:21,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:33:21,233 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4041153] [2025-04-14 00:33:21,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 00:33:21,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:33:21,254 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 1 equivalence classes. [2025-04-14 00:33:21,303 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 00:33:21,303 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 00:33:21,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:33:22,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:33:22,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:33:22,377 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4041153] [2025-04-14 00:33:22,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4041153] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:33:22,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:33:22,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 00:33:22,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182552878] [2025-04-14 00:33:22,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:33:22,378 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 00:33:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:33:22,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 00:33:22,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 00:33:22,380 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 17 [2025-04-14 00:33:22,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 39 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:33:22,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:33:22,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 17 [2025-04-14 00:33:22,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:33:22,505 INFO L116 PetriNetUnfolderBase]: 17/49 cut-off events. [2025-04-14 00:33:22,505 INFO L117 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-04-14 00:33:22,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 49 events. 17/49 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 111 event pairs, 6 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 109. Up to 21 conditions per place. [2025-04-14 00:33:22,507 INFO L140 encePairwiseOnDemand]: 14/17 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2025-04-14 00:33:22,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 85 flow [2025-04-14 00:33:22,508 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 00:33:22,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 00:33:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2025-04-14 00:33:22,508 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-04-14 00:33:22,508 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 39 flow. Second operand 4 states and 34 transitions. [2025-04-14 00:33:22,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 85 flow [2025-04-14 00:33:22,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 83 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 00:33:22,509 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2025-04-14 00:33:22,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2025-04-14 00:33:22,509 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2025-04-14 00:33:22,509 INFO L485 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2025-04-14 00:33:22,510 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 00:33:22,512 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-14 00:33:22,512 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-14 00:33:22,512 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-14 00:33:22,513 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:33:22,513 INFO L422 BasicCegarLoop]: Path program histogram: [2] [2025-04-14 00:33:22,515 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:33:22,516 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:33:22,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:33:22 BasicIcfg [2025-04-14 00:33:22,520 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:33:22,521 INFO L158 Benchmark]: Toolchain (without parser) took 4593.76ms. Allocated memory was 142.6MB in the beginning and 390.1MB in the end (delta: 247.5MB). Free memory was 101.2MB in the beginning and 314.0MB in the end (delta: -212.7MB). Peak memory consumption was 34.0MB. Max. memory is 8.0GB. [2025-04-14 00:33:22,521 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:33:22,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.19ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 86.5MB in the end (delta: 14.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-14 00:33:22,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.45ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 83.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:33:22,524 INFO L158 Benchmark]: Boogie Preprocessor took 50.47ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 81.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:33:22,524 INFO L158 Benchmark]: IcfgBuilder took 809.33ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 103.4MB in the end (delta: -21.8MB). Peak memory consumption was 65.8MB. Max. memory is 8.0GB. [2025-04-14 00:33:22,525 INFO L158 Benchmark]: TraceAbstraction took 3425.29ms. Allocated memory was 142.6MB in the beginning and 390.1MB in the end (delta: 247.5MB). Free memory was 103.4MB in the beginning and 314.0MB in the end (delta: -210.6MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2025-04-14 00:33:22,526 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 259.19ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 86.5MB in the end (delta: 14.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.45ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 83.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.47ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 81.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 809.33ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 103.4MB in the end (delta: -21.8MB). Peak memory consumption was 65.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3425.29ms. Allocated memory was 142.6MB in the beginning and 390.1MB in the end (delta: 247.5MB). Free memory was 103.4MB in the beginning and 314.0MB in the end (delta: -210.6MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 27 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 1096 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-14 00:33:22,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...