./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:45:05,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:45:06,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:45:06,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:45:06,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:45:06,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:45:06,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:45:06,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:45:06,087 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:45:06,087 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:45:06,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:45:06,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:45:06,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:45:06,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:45:06,088 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:45:06,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:45:06,089 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:45:06,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:45:06,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:45:06,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:45:06,092 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:45:06,092 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:45:06,093 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:45:06,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:45:06,093 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:45:06,093 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:45:06,093 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:45:06,093 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:45:06,094 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:45:06,094 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:45:06,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:45:06,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:45:06,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:45:06,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:45:06,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:45:06,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:45:06,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:45:06,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:45:06,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:45:06,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:45:06,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:45:06,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:45:06,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-17 03:45:06,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:45:06,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:45:06,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:45:06,312 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:45:06,313 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:45:06,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-17 03:45:07,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:45:07,725 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:45:07,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-17 03:45:07,736 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7363f7a3/ab38206e226e4f739d5442b82e275a81/FLAG11f597904 [2024-11-17 03:45:07,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7363f7a3/ab38206e226e4f739d5442b82e275a81 [2024-11-17 03:45:07,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:45:07,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:45:07,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:45:07,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:45:07,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:45:07,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:45:07" (1/1) ... [2024-11-17 03:45:07,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc9352e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:07, skipping insertion in model container [2024-11-17 03:45:07,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:45:07" (1/1) ... [2024-11-17 03:45:07,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:45:08,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:45:08,078 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:45:08,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:45:08,204 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:45:08,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08 WrapperNode [2024-11-17 03:45:08,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:45:08,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:45:08,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:45:08,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:45:08,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,246 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 86 [2024-11-17 03:45:08,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:45:08,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:45:08,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:45:08,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:45:08,256 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,273 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]. [2024-11-17 03:45:08,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,280 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:45:08,285 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:45:08,285 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:45:08,285 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:45:08,286 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (1/1) ... [2024-11-17 03:45:08,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:45:08,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:45:08,312 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) [2024-11-17 03:45:08,314 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 [2024-11-17 03:45:08,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:45:08,351 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-17 03:45:08,351 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-17 03:45:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-17 03:45:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-17 03:45:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:45:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:45:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:45:08,353 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:45:08,464 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:45:08,465 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:45:08,575 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:45:08,576 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:45:08,649 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:45:08,650 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:45:08,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:45:08 BoogieIcfgContainer [2024-11-17 03:45:08,650 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:45:08,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:45:08,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:45:08,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:45:08,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:45:07" (1/3) ... [2024-11-17 03:45:08,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de6e5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:45:08, skipping insertion in model container [2024-11-17 03:45:08,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:08" (2/3) ... [2024-11-17 03:45:08,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de6e5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:45:08, skipping insertion in model container [2024-11-17 03:45:08,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:45:08" (3/3) ... [2024-11-17 03:45:08,658 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-17 03:45:08,670 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:45:08,671 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-17 03:45:08,671 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:45:08,712 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:45:08,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 44 transitions, 102 flow [2024-11-17 03:45:08,765 INFO L124 PetriNetUnfolderBase]: 8/42 cut-off events. [2024-11-17 03:45:08,765 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:45:08,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 8/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-17 03:45:08,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 44 transitions, 102 flow [2024-11-17 03:45:08,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 94 flow [2024-11-17 03:45:08,789 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:45:08,797 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=None, 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;@31208992, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:45:08,797 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:45:08,806 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:45:08,806 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-17 03:45:08,806 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:45:08,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:08,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:08,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:08,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1907529051, now seen corresponding path program 1 times [2024-11-17 03:45:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:08,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802431748] [2024-11-17 03:45:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:08,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:08,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:08,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802431748] [2024-11-17 03:45:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802431748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:08,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:45:08,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816627632] [2024-11-17 03:45:08,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:08,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:45:08,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:09,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:45:09,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:45:09,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-17 03:45:09,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-17 03:45:09,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:09,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-17 03:45:09,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:09,125 INFO L124 PetriNetUnfolderBase]: 169/393 cut-off events. [2024-11-17 03:45:09,126 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-17 03:45:09,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 393 events. 169/393 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1787 event pairs, 138 based on Foata normal form. 93/473 useless extension candidates. Maximal degree in co-relation 661. Up to 292 conditions per place. [2024-11-17 03:45:09,130 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 22 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2024-11-17 03:45:09,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 122 flow [2024-11-17 03:45:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:45:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:45:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-17 03:45:09,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-17 03:45:09,142 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 94 flow. Second operand 2 states and 54 transitions. [2024-11-17 03:45:09,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 122 flow [2024-11-17 03:45:09,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:45:09,147 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 70 flow [2024-11-17 03:45:09,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-17 03:45:09,152 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-17 03:45:09,152 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 70 flow [2024-11-17 03:45:09,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-17 03:45:09,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:09,153 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:09,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:45:09,153 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:09,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1026680078, now seen corresponding path program 1 times [2024-11-17 03:45:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58809750] [2024-11-17 03:45:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:09,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:09,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58809750] [2024-11-17 03:45:09,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58809750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:09,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:09,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 03:45:09,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408040697] [2024-11-17 03:45:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:09,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 03:45:09,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:09,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 03:45:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 03:45:09,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-17 03:45:09,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 70 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2024-11-17 03:45:09,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:09,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-17 03:45:09,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:09,848 INFO L124 PetriNetUnfolderBase]: 527/1093 cut-off events. [2024-11-17 03:45:09,849 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-17 03:45:09,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2015 conditions, 1093 events. 527/1093 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6348 event pairs, 50 based on Foata normal form. 0/1011 useless extension candidates. Maximal degree in co-relation 2012. Up to 253 conditions per place. [2024-11-17 03:45:09,855 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 113 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2024-11-17 03:45:09,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 143 transitions, 570 flow [2024-11-17 03:45:09,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 03:45:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 03:45:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 279 transitions. [2024-11-17 03:45:09,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48776223776223776 [2024-11-17 03:45:09,858 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 70 flow. Second operand 13 states and 279 transitions. [2024-11-17 03:45:09,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 143 transitions, 570 flow [2024-11-17 03:45:09,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 143 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:45:09,863 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 207 flow [2024-11-17 03:45:09,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=207, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-17 03:45:09,863 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2024-11-17 03:45:09,863 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 207 flow [2024-11-17 03:45:09,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2024-11-17 03:45:09,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:09,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:09,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:45:09,864 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:09,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1972068853, now seen corresponding path program 1 times [2024-11-17 03:45:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:09,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379530528] [2024-11-17 03:45:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:09,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379530528] [2024-11-17 03:45:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379530528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:45:09,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047164102] [2024-11-17 03:45:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:09,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:45:09,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:45:09,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:45:10,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:45:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:10,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:45:10,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:10,118 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:45:10,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047164102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:10,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:45:10,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2024-11-17 03:45:10,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84480488] [2024-11-17 03:45:10,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:10,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:45:10,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:10,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:45:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-17 03:45:10,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-17 03:45:10,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 207 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2024-11-17 03:45:10,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:10,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-17 03:45:10,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:10,446 INFO L124 PetriNetUnfolderBase]: 502/1113 cut-off events. [2024-11-17 03:45:10,446 INFO L125 PetriNetUnfolderBase]: For 642/642 co-relation queries the response was YES. [2024-11-17 03:45:10,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 1113 events. 502/1113 cut-off events. For 642/642 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6786 event pairs, 99 based on Foata normal form. 26/1099 useless extension candidates. Maximal degree in co-relation 2696. Up to 229 conditions per place. [2024-11-17 03:45:10,454 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 112 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2024-11-17 03:45:10,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 142 transitions, 701 flow [2024-11-17 03:45:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:45:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:45:10,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-11-17 03:45:10,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5371900826446281 [2024-11-17 03:45:10,456 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 207 flow. Second operand 11 states and 260 transitions. [2024-11-17 03:45:10,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 142 transitions, 701 flow [2024-11-17 03:45:10,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:10,465 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 307 flow [2024-11-17 03:45:10,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=307, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-17 03:45:10,466 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2024-11-17 03:45:10,466 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 307 flow [2024-11-17 03:45:10,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 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) [2024-11-17 03:45:10,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:10,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:10,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:45:10,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:45:10,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:10,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:10,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1501674421, now seen corresponding path program 1 times [2024-11-17 03:45:10,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:10,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797336007] [2024-11-17 03:45:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:10,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:10,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797336007] [2024-11-17 03:45:10,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797336007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:10,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:10,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:45:10,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612532447] [2024-11-17 03:45:10,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:10,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:45:10,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:10,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:45:10,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:45:10,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-17 03:45:10,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-11-17 03:45:10,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:10,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-17 03:45:10,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:10,918 INFO L124 PetriNetUnfolderBase]: 565/1290 cut-off events. [2024-11-17 03:45:10,918 INFO L125 PetriNetUnfolderBase]: For 1630/1672 co-relation queries the response was YES. [2024-11-17 03:45:10,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 1290 events. 565/1290 cut-off events. For 1630/1672 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8196 event pairs, 124 based on Foata normal form. 14/1241 useless extension candidates. Maximal degree in co-relation 3288. Up to 500 conditions per place. [2024-11-17 03:45:10,925 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 75 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-11-17 03:45:10,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 751 flow [2024-11-17 03:45:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:45:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:45:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-11-17 03:45:10,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2024-11-17 03:45:10,927 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 307 flow. Second operand 7 states and 150 transitions. [2024-11-17 03:45:10,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 751 flow [2024-11-17 03:45:10,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 108 transitions, 695 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-17 03:45:10,938 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 366 flow [2024-11-17 03:45:10,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-11-17 03:45:10,939 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-11-17 03:45:10,940 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 366 flow [2024-11-17 03:45:10,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-11-17 03:45:10,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:10,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:10,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:45:10,941 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:10,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1301228896, now seen corresponding path program 1 times [2024-11-17 03:45:10,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:10,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631175853] [2024-11-17 03:45:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:10,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:11,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:11,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631175853] [2024-11-17 03:45:11,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631175853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:11,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:11,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:45:11,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493044903] [2024-11-17 03:45:11,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:11,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:45:11,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:11,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:45:11,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:45:11,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-17 03:45:11,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-17 03:45:11,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:11,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-17 03:45:11,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:11,181 INFO L124 PetriNetUnfolderBase]: 601/1373 cut-off events. [2024-11-17 03:45:11,182 INFO L125 PetriNetUnfolderBase]: For 1817/1870 co-relation queries the response was YES. [2024-11-17 03:45:11,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 1373 events. 601/1373 cut-off events. For 1817/1870 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8923 event pairs, 157 based on Foata normal form. 14/1379 useless extension candidates. Maximal degree in co-relation 3853. Up to 554 conditions per place. [2024-11-17 03:45:11,191 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 67 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-11-17 03:45:11,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 675 flow [2024-11-17 03:45:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:45:11,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:45:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-11-17 03:45:11,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-17 03:45:11,193 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 366 flow. Second operand 6 states and 128 transitions. [2024-11-17 03:45:11,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 675 flow [2024-11-17 03:45:11,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 95 transitions, 659 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:45:11,201 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 394 flow [2024-11-17 03:45:11,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-17 03:45:11,203 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 34 predicate places. [2024-11-17 03:45:11,203 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 394 flow [2024-11-17 03:45:11,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-17 03:45:11,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:11,203 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:11,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:45:11,204 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:11,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2088087918, now seen corresponding path program 1 times [2024-11-17 03:45:11,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:11,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983024850] [2024-11-17 03:45:11,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:11,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:11,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:45:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:11,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:45:11,243 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:45:11,243 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-17 03:45:11,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-17 03:45:11,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-17 03:45:11,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-17 03:45:11,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-17 03:45:11,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-17 03:45:11,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-17 03:45:11,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:45:11,246 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-17 03:45:11,272 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 03:45:11,272 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 03:45:11,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:45:11 BasicIcfg [2024-11-17 03:45:11,276 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 03:45:11,276 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 03:45:11,277 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 03:45:11,277 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 03:45:11,277 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:45:08" (3/4) ... [2024-11-17 03:45:11,278 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-17 03:45:11,279 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 03:45:11,279 INFO L158 Benchmark]: Toolchain (without parser) took 3523.43ms. Allocated memory was 178.3MB in the beginning and 218.1MB in the end (delta: 39.8MB). Free memory was 109.0MB in the beginning and 71.5MB in the end (delta: 37.4MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. [2024-11-17 03:45:11,280 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory was 144.2MB in the beginning and 144.0MB in the end (delta: 182.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:45:11,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.45ms. Allocated memory is still 178.3MB. Free memory was 108.7MB in the beginning and 143.0MB in the end (delta: -34.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-17 03:45:11,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.28ms. Allocated memory is still 178.3MB. Free memory was 143.0MB in the beginning and 141.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 03:45:11,280 INFO L158 Benchmark]: Boogie Preprocessor took 37.46ms. Allocated memory is still 178.3MB. Free memory was 141.0MB in the beginning and 138.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 03:45:11,281 INFO L158 Benchmark]: IcfgBuilder took 365.21ms. Allocated memory is still 178.3MB. Free memory was 138.9MB in the beginning and 116.5MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-17 03:45:11,281 INFO L158 Benchmark]: TraceAbstraction took 2624.42ms. Allocated memory was 178.3MB in the beginning and 218.1MB in the end (delta: 39.8MB). Free memory was 115.8MB in the beginning and 71.5MB in the end (delta: 44.3MB). Peak memory consumption was 85.9MB. Max. memory is 16.1GB. [2024-11-17 03:45:11,281 INFO L158 Benchmark]: Witness Printer took 2.49ms. Allocated memory is still 218.1MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:45:11,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory was 144.2MB in the beginning and 144.0MB in the end (delta: 182.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.45ms. Allocated memory is still 178.3MB. Free memory was 108.7MB in the beginning and 143.0MB in the end (delta: -34.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.28ms. Allocated memory is still 178.3MB. Free memory was 143.0MB in the beginning and 141.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.46ms. Allocated memory is still 178.3MB. Free memory was 141.0MB in the beginning and 138.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 365.21ms. Allocated memory is still 178.3MB. Free memory was 138.9MB in the beginning and 116.5MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2624.42ms. Allocated memory was 178.3MB in the beginning and 218.1MB in the end (delta: 39.8MB). Free memory was 115.8MB in the beginning and 71.5MB in the end (delta: 44.3MB). Peak memory consumption was 85.9MB. Max. memory is 16.1GB. * Witness Printer took 2.49ms. Allocated memory is still 218.1MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = __VERIFIER_nondet_int() [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=0, limit=0, t1=-1] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=0, limit=0, t1=-1, t2=0] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=1] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0] [L770] COND FALSE 2 !(i < bound) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0] [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=0, limit=0] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 65 locations, 7 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: 2.5s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 452 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 447 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 901 IncrementalHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 901 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=394occurred in iteration=5, InterpolantAutomatonStates: 39, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 229 SizeOfPredicates, 5 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 2/4 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-17 03:45:11,302 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:45:13,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:45:13,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-17 03:45:13,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:45:13,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:45:13,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:45:13,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:45:13,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:45:13,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:45:13,242 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:45:13,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:45:13,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:45:13,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:45:13,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:45:13,245 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:45:13,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:45:13,245 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:45:13,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:45:13,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:45:13,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:45:13,246 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:45:13,247 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:45:13,249 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:45:13,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:45:13,249 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:45:13,249 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-17 03:45:13,250 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:45:13,250 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-17 03:45:13,250 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:45:13,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:45:13,250 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:45:13,250 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:45:13,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:45:13,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:45:13,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:45:13,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:45:13,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:45:13,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:45:13,252 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-17 03:45:13,252 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-17 03:45:13,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:45:13,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:45:13,253 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:45:13,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:45:13,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-17 03:45:13,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:45:13,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:45:13,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:45:13,518 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:45:13,518 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:45:13,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-17 03:45:14,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:45:14,999 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:45:14,999 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-17 03:45:15,013 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5b8f47c/846ac379febd4eee941eaf9884dfd054/FLAGa61a6ea45 [2024-11-17 03:45:15,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f5b8f47c/846ac379febd4eee941eaf9884dfd054 [2024-11-17 03:45:15,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:45:15,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:45:15,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:45:15,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:45:15,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:45:15,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf5cb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15, skipping insertion in model container [2024-11-17 03:45:15,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,066 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:45:15,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:45:15,382 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:45:15,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:45:15,466 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:45:15,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15 WrapperNode [2024-11-17 03:45:15,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:45:15,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:45:15,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:45:15,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:45:15,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,499 INFO L138 Inliner]: procedures = 170, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 86 [2024-11-17 03:45:15,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:45:15,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:45:15,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:45:15,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:45:15,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,544 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]. [2024-11-17 03:45:15,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,567 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:45:15,579 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:45:15,579 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:45:15,579 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:45:15,579 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:45:15,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:45:15,604 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) [2024-11-17 03:45:15,606 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 [2024-11-17 03:45:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:45:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-17 03:45:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-17 03:45:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-17 03:45:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-17 03:45:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-17 03:45:15,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:45:15,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:45:15,638 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:45:15,753 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:45:15,755 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:45:15,891 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:45:15,892 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:45:16,017 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:45:16,018 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:45:16,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:45:16 BoogieIcfgContainer [2024-11-17 03:45:16,018 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:45:16,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:45:16,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:45:16,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:45:16,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:45:15" (1/3) ... [2024-11-17 03:45:16,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea2bb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:45:16, skipping insertion in model container [2024-11-17 03:45:16,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (2/3) ... [2024-11-17 03:45:16,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea2bb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:45:16, skipping insertion in model container [2024-11-17 03:45:16,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:45:16" (3/3) ... [2024-11-17 03:45:16,029 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-17 03:45:16,044 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:45:16,045 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-17 03:45:16,045 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:45:16,093 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:45:16,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 44 transitions, 102 flow [2024-11-17 03:45:16,160 INFO L124 PetriNetUnfolderBase]: 8/42 cut-off events. [2024-11-17 03:45:16,160 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:45:16,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 8/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-17 03:45:16,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 44 transitions, 102 flow [2024-11-17 03:45:16,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 94 flow [2024-11-17 03:45:16,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:45:16,185 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=None, 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;@1a3684af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:45:16,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:45:16,195 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:45:16,196 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-17 03:45:16,196 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:45:16,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:16,197 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:16,197 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:16,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1907529051, now seen corresponding path program 1 times [2024-11-17 03:45:16,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:45:16,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177689743] [2024-11-17 03:45:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:16,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:16,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:45:16,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:45:16,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-17 03:45:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:16,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-17 03:45:16,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:16,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:45:16,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:45:16,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177689743] [2024-11-17 03:45:16,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177689743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:16,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:16,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:45:16,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103737575] [2024-11-17 03:45:16,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:16,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:45:16,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:45:16,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:45:16,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:45:16,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-17 03:45:16,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-17 03:45:16,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:16,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-17 03:45:16,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:16,437 INFO L124 PetriNetUnfolderBase]: 169/393 cut-off events. [2024-11-17 03:45:16,437 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-17 03:45:16,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 393 events. 169/393 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1787 event pairs, 138 based on Foata normal form. 93/473 useless extension candidates. Maximal degree in co-relation 661. Up to 292 conditions per place. [2024-11-17 03:45:16,444 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 22 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2024-11-17 03:45:16,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 122 flow [2024-11-17 03:45:16,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:45:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:45:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-17 03:45:16,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-17 03:45:16,455 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 94 flow. Second operand 2 states and 54 transitions. [2024-11-17 03:45:16,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 122 flow [2024-11-17 03:45:16,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:45:16,459 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 70 flow [2024-11-17 03:45:16,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-17 03:45:16,464 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-17 03:45:16,466 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 70 flow [2024-11-17 03:45:16,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-17 03:45:16,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:16,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:16,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-17 03:45:16,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:16,667 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:16,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1026680078, now seen corresponding path program 1 times [2024-11-17 03:45:16,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:45:16,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529965411] [2024-11-17 03:45:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:16,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:16,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:45:16,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:45:16,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-17 03:45:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:16,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:45:16,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:16,940 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:45:16,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:45:16,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529965411] [2024-11-17 03:45:16,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529965411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:16,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:16,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 03:45:16,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681502819] [2024-11-17 03:45:16,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:16,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 03:45:16,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:45:16,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 03:45:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-17 03:45:16,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-17 03:45:16,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 70 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2024-11-17 03:45:16,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:16,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-17 03:45:16,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:17,459 INFO L124 PetriNetUnfolderBase]: 451/1017 cut-off events. [2024-11-17 03:45:17,459 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-17 03:45:17,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 1017 events. 451/1017 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6152 event pairs, 83 based on Foata normal form. 26/985 useless extension candidates. Maximal degree in co-relation 1806. Up to 253 conditions per place. [2024-11-17 03:45:17,465 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 98 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2024-11-17 03:45:17,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 124 transitions, 491 flow [2024-11-17 03:45:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:45:17,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:45:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 248 transitions. [2024-11-17 03:45:17,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.512396694214876 [2024-11-17 03:45:17,468 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 70 flow. Second operand 11 states and 248 transitions. [2024-11-17 03:45:17,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 124 transitions, 491 flow [2024-11-17 03:45:17,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 124 transitions, 491 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:45:17,472 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 181 flow [2024-11-17 03:45:17,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=181, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-11-17 03:45:17,473 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2024-11-17 03:45:17,473 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 181 flow [2024-11-17 03:45:17,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2024-11-17 03:45:17,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:17,473 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:17,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-17 03:45:17,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:17,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:17,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:17,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1972068853, now seen corresponding path program 1 times [2024-11-17 03:45:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:45:17,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957719723] [2024-11-17 03:45:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:17,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:45:17,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:45:17,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-17 03:45:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:17,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 03:45:17,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:17,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:45:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:17,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:45:17,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957719723] [2024-11-17 03:45:17,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957719723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:45:17,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:45:17,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2024-11-17 03:45:17,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470068878] [2024-11-17 03:45:17,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:45:17,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 03:45:17,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:45:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 03:45:17,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-17 03:45:17,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-17 03:45:17,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 181 flow. Second operand has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 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) [2024-11-17 03:45:17,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:17,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-17 03:45:17,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:19,511 INFO L124 PetriNetUnfolderBase]: 995/2043 cut-off events. [2024-11-17 03:45:19,511 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2024-11-17 03:45:19,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4937 conditions, 2043 events. 995/2043 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13249 event pairs, 14 based on Foata normal form. 52/1987 useless extension candidates. Maximal degree in co-relation 4926. Up to 290 conditions per place. [2024-11-17 03:45:19,520 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 246 selfloop transitions, 52 changer transitions 0/307 dead transitions. [2024-11-17 03:45:19,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 307 transitions, 1452 flow [2024-11-17 03:45:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-17 03:45:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-17 03:45:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 632 transitions. [2024-11-17 03:45:19,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-11-17 03:45:19,524 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 181 flow. Second operand 30 states and 632 transitions. [2024-11-17 03:45:19,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 307 transitions, 1452 flow [2024-11-17 03:45:19,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 307 transitions, 1451 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:19,543 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 517 flow [2024-11-17 03:45:19,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=517, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2024-11-17 03:45:19,544 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2024-11-17 03:45:19,544 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 517 flow [2024-11-17 03:45:19,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 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) [2024-11-17 03:45:19,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:19,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:19,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-17 03:45:19,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:19,746 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:19,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:19,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1501674421, now seen corresponding path program 1 times [2024-11-17 03:45:19,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:45:19,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241796072] [2024-11-17 03:45:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:19,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:19,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:45:19,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:45:19,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-17 03:45:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:19,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:45:19,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:19,853 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:45:19,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:45:19,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241796072] [2024-11-17 03:45:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241796072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:19,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:45:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420688482] [2024-11-17 03:45:19,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:19,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:45:19,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:45:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:45:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:45:19,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-17 03:45:19,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-11-17 03:45:19,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:19,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-17 03:45:19,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:20,201 INFO L124 PetriNetUnfolderBase]: 919/2083 cut-off events. [2024-11-17 03:45:20,201 INFO L125 PetriNetUnfolderBase]: For 3826/3908 co-relation queries the response was YES. [2024-11-17 03:45:20,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 2083 events. 919/2083 cut-off events. For 3826/3908 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14888 event pairs, 253 based on Foata normal form. 5/1967 useless extension candidates. Maximal degree in co-relation 5797. Up to 656 conditions per place. [2024-11-17 03:45:20,213 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 109 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-11-17 03:45:20,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 152 transitions, 1261 flow [2024-11-17 03:45:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:45:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:45:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-11-17 03:45:20,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4967532467532468 [2024-11-17 03:45:20,215 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 517 flow. Second operand 7 states and 153 transitions. [2024-11-17 03:45:20,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 152 transitions, 1261 flow [2024-11-17 03:45:20,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 152 transitions, 937 flow, removed 116 selfloop flow, removed 14 redundant places. [2024-11-17 03:45:20,229 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 450 flow [2024-11-17 03:45:20,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=450, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2024-11-17 03:45:20,230 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-11-17 03:45:20,231 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 450 flow [2024-11-17 03:45:20,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2024-11-17 03:45:20,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:20,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:20,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-17 03:45:20,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:20,432 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:20,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1714270660, now seen corresponding path program 1 times [2024-11-17 03:45:20,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:45:20,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593881190] [2024-11-17 03:45:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:20,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:20,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:45:20,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:45:20,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-17 03:45:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:20,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:45:20,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:20,542 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:45:20,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:45:20,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593881190] [2024-11-17 03:45:20,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593881190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:20,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:20,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:45:20,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591120083] [2024-11-17 03:45:20,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:20,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:45:20,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:45:20,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:45:20,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:45:20,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-17 03:45:20,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-17 03:45:20,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:20,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-17 03:45:20,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:20,830 INFO L124 PetriNetUnfolderBase]: 995/2213 cut-off events. [2024-11-17 03:45:20,830 INFO L125 PetriNetUnfolderBase]: For 2115/2192 co-relation queries the response was YES. [2024-11-17 03:45:20,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5890 conditions, 2213 events. 995/2213 cut-off events. For 2115/2192 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15734 event pairs, 275 based on Foata normal form. 14/2106 useless extension candidates. Maximal degree in co-relation 5874. Up to 765 conditions per place. [2024-11-17 03:45:20,840 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 96 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-11-17 03:45:20,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 875 flow [2024-11-17 03:45:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:45:20,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:45:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-17 03:45:20,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-11-17 03:45:20,842 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 450 flow. Second operand 6 states and 130 transitions. [2024-11-17 03:45:20,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 875 flow [2024-11-17 03:45:20,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 129 transitions, 854 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:45:20,850 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 481 flow [2024-11-17 03:45:20,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=481, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-11-17 03:45:20,850 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2024-11-17 03:45:20,851 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 481 flow [2024-11-17 03:45:20,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-17 03:45:20,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:20,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:20,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-17 03:45:21,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:21,055 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:21,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1947867846, now seen corresponding path program 1 times [2024-11-17 03:45:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:45:21,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053988883] [2024-11-17 03:45:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:21,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:21,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:45:21,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:45:21,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-17 03:45:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:21,091 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:45:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:21,127 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-17 03:45:21,127 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:45:21,128 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-17 03:45:21,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-17 03:45:21,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-17 03:45:21,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-17 03:45:21,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-17 03:45:21,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-17 03:45:21,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-17 03:45:21,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-17 03:45:21,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:45:21,332 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-17 03:45:21,358 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 03:45:21,358 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 03:45:21,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:45:21 BasicIcfg [2024-11-17 03:45:21,362 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 03:45:21,363 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 03:45:21,363 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 03:45:21,363 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 03:45:21,364 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:45:16" (3/4) ... [2024-11-17 03:45:21,365 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-17 03:45:21,366 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 03:45:21,367 INFO L158 Benchmark]: Toolchain (without parser) took 6339.25ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 78.6MB in the beginning and 70.4MB in the end (delta: 8.2MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2024-11-17 03:45:21,369 INFO L158 Benchmark]: CDTParser took 1.25ms. Allocated memory is still 67.1MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:45:21,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.04ms. Allocated memory is still 102.8MB. Free memory was 78.4MB in the beginning and 55.0MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-17 03:45:21,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.40ms. Allocated memory is still 102.8MB. Free memory was 55.0MB in the beginning and 52.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 03:45:21,370 INFO L158 Benchmark]: Boogie Preprocessor took 76.16ms. Allocated memory is still 102.8MB. Free memory was 52.6MB in the beginning and 79.5MB in the end (delta: -26.8MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-11-17 03:45:21,370 INFO L158 Benchmark]: IcfgBuilder took 439.52ms. Allocated memory is still 102.8MB. Free memory was 79.5MB in the beginning and 51.5MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-17 03:45:21,371 INFO L158 Benchmark]: TraceAbstraction took 5343.19ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 51.0MB in the beginning and 70.4MB in the end (delta: -19.4MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2024-11-17 03:45:21,371 INFO L158 Benchmark]: Witness Printer took 3.26ms. Allocated memory is still 148.9MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:45:21,372 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.25ms. Allocated memory is still 67.1MB. Free memory is still 35.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 439.04ms. Allocated memory is still 102.8MB. Free memory was 78.4MB in the beginning and 55.0MB in the end (delta: 23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.40ms. Allocated memory is still 102.8MB. Free memory was 55.0MB in the beginning and 52.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.16ms. Allocated memory is still 102.8MB. Free memory was 52.6MB in the beginning and 79.5MB in the end (delta: -26.8MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * IcfgBuilder took 439.52ms. Allocated memory is still 102.8MB. Free memory was 79.5MB in the beginning and 51.5MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5343.19ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 51.0MB in the beginning and 70.4MB in the end (delta: -19.4MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Witness Printer took 3.26ms. Allocated memory is still 148.9MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = __VERIFIER_nondet_int() [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=0, limit=0, t1=-1] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=0, limit=0, t1=-1, t2=0] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=1] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0] [L770] COND FALSE 2 !(i < bound) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0] [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=0, limit=0] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 65 locations, 7 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: 5.2s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 774 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 769 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1357 IncrementalHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 5 mSDtfsCounter, 1357 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=517occurred in iteration=3, InterpolantAutomatonStates: 56, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 426 SizeOfPredicates, 22 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-17 03:45:21,405 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample