/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/parallel-misc-2-unrolled-atomic.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:52:35,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:52:35,210 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 00:52:35,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:52:35,213 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:52:35,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:52:35,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:52:35,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:52:35,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:52:35,234 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:52:35,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:52:35,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:52:35,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:52:35,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:52:35,234 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:52:35,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:52:35,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:52:35,235 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:52:35,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:52:35,235 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:52:35,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:52:35,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:52:35,236 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 00:52:35,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:52:35,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:52:35,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:52:35,468 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:52:35,468 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:52:35,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2025-04-14 00:52:36,858 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f6bf0fa2/2f2e28f2539e47488bf4458c6946d3a6/FLAGe4b0c6520 [2025-04-14 00:52:37,103 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:52:37,106 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2025-04-14 00:52:37,115 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f6bf0fa2/2f2e28f2539e47488bf4458c6946d3a6/FLAGe4b0c6520 [2025-04-14 00:52:37,909 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f6bf0fa2/2f2e28f2539e47488bf4458c6946d3a6 [2025-04-14 00:52:37,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:52:37,913 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:52:37,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:52:37,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:52:37,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:52:37,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:52:37" (1/1) ... [2025-04-14 00:52:37,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49732e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:37, skipping insertion in model container [2025-04-14 00:52:37,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:52:37" (1/1) ... [2025-04-14 00:52:37,932 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:52:38,102 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/parallel-misc-2-unrolled-atomic.wvr.c[2278,2291] [2025-04-14 00:52:38,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:52:38,114 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:52:38,143 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/parallel-misc-2-unrolled-atomic.wvr.c[2278,2291] [2025-04-14 00:52:38,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:52:38,154 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:52:38,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38 WrapperNode [2025-04-14 00:52:38,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:52:38,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:52:38,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:52:38,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:52:38,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,179 INFO L138 Inliner]: procedures = 19, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2025-04-14 00:52:38,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:52:38,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:52:38,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:52:38,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:52:38,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,186 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,194 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 00:52:38,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,196 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:52:38,202 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:52:38,202 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:52:38,202 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:52:38,203 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (1/1) ... [2025-04-14 00:52:38,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:52:38,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:52:38,225 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 00:52:38,227 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 00:52:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:52:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 00:52:38,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 00:52:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 00:52:38,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 00:52:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:52:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:52:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:52:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:52:38,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:52:38,244 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 00:52:38,314 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:52:38,316 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:52:38,481 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:52:38,481 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:52:38,481 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:52:38,629 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:52:38,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:52:38 BoogieIcfgContainer [2025-04-14 00:52:38,630 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:52:38,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:52:38,635 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:52:38,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:52:38,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:52:37" (1/3) ... [2025-04-14 00:52:38,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24963e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:52:38, skipping insertion in model container [2025-04-14 00:52:38,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:52:38" (2/3) ... [2025-04-14 00:52:38,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24963e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:52:38, skipping insertion in model container [2025-04-14 00:52:38,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:52:38" (3/3) ... [2025-04-14 00:52:38,641 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled-atomic.wvr.c [2025-04-14 00:52:38,652 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:52:38,653 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-2-unrolled-atomic.wvr.c that has 3 procedures, 18 locations, 17 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-14 00:52:38,653 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:52:38,687 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-14 00:52:38,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 52 flow [2025-04-14 00:52:38,731 INFO L116 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-04-14 00:52:38,733 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-14 00:52:38,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 17 events. 2/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2025-04-14 00:52:38,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 52 flow [2025-04-14 00:52:38,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 16 transitions, 44 flow [2025-04-14 00:52:38,742 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:52:38,753 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;@27935f83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:52:38,753 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-14 00:52:38,765 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:52:38,766 INFO L116 PetriNetUnfolderBase]: 2/15 cut-off events. [2025-04-14 00:52:38,766 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-14 00:52:38,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:52:38,766 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:52:38,768 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 00:52:38,772 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:52:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1457173626, now seen corresponding path program 1 times [2025-04-14 00:52:38,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:52:38,779 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749596348] [2025-04-14 00:52:38,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:52:38,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:52:38,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-14 00:52:38,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-14 00:52:38,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:52:38,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:52:38,972 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 00:52:38,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:52:38,973 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749596348] [2025-04-14 00:52:38,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749596348] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:52:38,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:52:38,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-14 00:52:38,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640448574] [2025-04-14 00:52:38,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:52:38,979 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:52:38,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:52:38,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:52:38,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:52:38,997 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 19 [2025-04-14 00:52:38,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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 00:52:38,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:52:38,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 19 [2025-04-14 00:52:39,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:52:39,040 INFO L116 PetriNetUnfolderBase]: 40/77 cut-off events. [2025-04-14 00:52:39,040 INFO L117 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-04-14 00:52:39,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 77 events. 40/77 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 215 event pairs, 16 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 128. Up to 65 conditions per place. [2025-04-14 00:52:39,041 INFO L140 encePairwiseOnDemand]: 17/19 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2025-04-14 00:52:39,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 64 flow [2025-04-14 00:52:39,042 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:52:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:52:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2025-04-14 00:52:39,050 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2025-04-14 00:52:39,051 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 44 flow. Second operand 3 states and 30 transitions. [2025-04-14 00:52:39,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 64 flow [2025-04-14 00:52:39,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 56 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-14 00:52:39,056 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2025-04-14 00:52:39,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2025-04-14 00:52:39,062 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, -3 predicate places. [2025-04-14 00:52:39,062 INFO L485 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2025-04-14 00:52:39,062 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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 00:52:39,064 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-14 00:52:39,064 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-14 00:52:39,064 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-14 00:52:39,065 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:52:39,065 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-14 00:52:39,067 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:52:39,067 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:52:39,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:52:39 BasicIcfg [2025-04-14 00:52:39,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:52:39,071 INFO L158 Benchmark]: Toolchain (without parser) took 1158.63ms. Allocated memory is still 155.2MB. Free memory was 108.0MB in the beginning and 27.1MB in the end (delta: 80.9MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2025-04-14 00:52:39,071 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:52:39,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.84ms. Allocated memory is still 155.2MB. Free memory was 108.0MB in the beginning and 93.6MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2025-04-14 00:52:39,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.35ms. Allocated memory is still 155.2MB. Free memory was 93.6MB in the beginning and 91.9MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:52:39,072 INFO L158 Benchmark]: Boogie Preprocessor took 20.15ms. Allocated memory is still 155.2MB. Free memory was 91.9MB in the beginning and 90.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:52:39,072 INFO L158 Benchmark]: IcfgBuilder took 427.90ms. Allocated memory is still 155.2MB. Free memory was 90.6MB in the beginning and 57.1MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2025-04-14 00:52:39,072 INFO L158 Benchmark]: TraceAbstraction took 436.27ms. Allocated memory is still 155.2MB. Free memory was 56.5MB in the beginning and 27.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2025-04-14 00:52:39,073 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.84ms. Allocated memory is still 155.2MB. Free memory was 108.0MB in the beginning and 93.6MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.35ms. Allocated memory is still 155.2MB. Free memory was 93.6MB in the beginning and 91.9MB in the end (delta: 1.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.15ms. Allocated memory is still 155.2MB. Free memory was 91.9MB in the beginning and 90.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 427.90ms. Allocated memory is still 155.2MB. Free memory was 90.6MB in the beginning and 57.1MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 436.27ms. Allocated memory is still 155.2MB. Free memory was 56.5MB in the beginning and 27.1MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 84]: 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, 31 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 00:52:39,084 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 0 Received shutdown request...