./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 023d838f 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-023d838-m [2024-11-10 18:26:29,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:26:29,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:26:29,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:26:29,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:26:29,478 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:26:29,479 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:26:29,479 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:26:29,480 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:26:29,480 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:26:29,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:26:29,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:26:29,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:26:29,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:26:29,482 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:26:29,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:26:29,483 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:26:29,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:26:29,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:26:29,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:26:29,484 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:26:29,488 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:26:29,488 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:26:29,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:26:29,488 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:26:29,489 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:26:29,489 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:26:29,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:26:29,489 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:26:29,489 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:26:29,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:26:29,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:26:29,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:26:29,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:26:29,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:26:29,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:26:29,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:26:29,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:26:29,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:26:29,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:26:29,496 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:26:29,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:26:29,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-10 18:26:29,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:26:29,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:26:29,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:26:29,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:26:29,811 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:26:29,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-10 18:26:31,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:26:31,731 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:26:31,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-10 18:26:31,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2fcd5ba/4937ff34d6744836a8825b0dd32fb27e/FLAGb0de8c7ee [2024-11-10 18:26:31,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2fcd5ba/4937ff34d6744836a8825b0dd32fb27e [2024-11-10 18:26:31,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:26:31,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:26:31,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:26:31,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:26:31,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:26:31,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:26:31" (1/1) ... [2024-11-10 18:26:31,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de73c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:31, skipping insertion in model container [2024-11-10 18:26:31,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:26:31" (1/1) ... [2024-11-10 18:26:31,840 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:26:32,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:26:32,115 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:26:32,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:26:32,181 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:26:32,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32 WrapperNode [2024-11-10 18:26:32,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:26:32,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:26:32,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:26:32,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:26:32,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,225 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 86 [2024-11-10 18:26:32,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:26:32,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:26:32,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:26:32,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:26:32,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,256 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]. [2024-11-10 18:26:32,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,260 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:26:32,271 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:26:32,271 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:26:32,272 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:26:32,272 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (1/1) ... [2024-11-10 18:26:32,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:26:32,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:26:32,314 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) [2024-11-10 18:26:32,321 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 [2024-11-10 18:26:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:26:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-10 18:26:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-10 18:26:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-10 18:26:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-10 18:26:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:26:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:26:32,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:26:32,375 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:26:32,561 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:26:32,563 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:26:32,663 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:26:32,663 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:26:32,786 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:26:32,787 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:26:32,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:26:32 BoogieIcfgContainer [2024-11-10 18:26:32,788 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:26:32,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:26:32,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:26:32,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:26:32,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:26:31" (1/3) ... [2024-11-10 18:26:32,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7c4aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:26:32, skipping insertion in model container [2024-11-10 18:26:32,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:32" (2/3) ... [2024-11-10 18:26:32,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7c4aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:26:32, skipping insertion in model container [2024-11-10 18:26:32,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:26:32" (3/3) ... [2024-11-10 18:26:32,796 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-10 18:26:32,809 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:26:32,810 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-10 18:26:32,810 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:26:32,845 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:26:32,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 44 transitions, 102 flow [2024-11-10 18:26:32,904 INFO L124 PetriNetUnfolderBase]: 8/42 cut-off events. [2024-11-10 18:26:32,905 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:26:32,910 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. [2024-11-10 18:26:32,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 44 transitions, 102 flow [2024-11-10 18:26:32,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 94 flow [2024-11-10 18:26:32,927 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:26:32,935 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;@461ec3a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:26:32,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 18:26:32,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:26:32,948 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-10 18:26:32,949 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:26:32,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:32,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:32,951 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)] === [2024-11-10 18:26:32,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:32,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1907529051, now seen corresponding path program 1 times [2024-11-10 18:26:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:32,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610684529] [2024-11-10 18:26:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:33,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610684529] [2024-11-10 18:26:33,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610684529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:33,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:33,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:26:33,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323014310] [2024-11-10 18:26:33,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:33,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:26:33,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:33,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:26:33,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:26:33,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-10 18:26:33,181 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) [2024-11-10 18:26:33,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:33,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-10 18:26:33,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:33,269 INFO L124 PetriNetUnfolderBase]: 169/393 cut-off events. [2024-11-10 18:26:33,270 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 18:26:33,271 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. [2024-11-10 18:26:33,275 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 22 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2024-11-10 18:26:33,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 122 flow [2024-11-10 18:26:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:26:33,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:26:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-10 18:26:33,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-10 18:26:33,287 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 94 flow. Second operand 2 states and 54 transitions. [2024-11-10 18:26:33,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 122 flow [2024-11-10 18:26:33,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:26:33,291 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 70 flow [2024-11-10 18:26:33,294 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} [2024-11-10 18:26:33,297 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-10 18:26:33,297 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 70 flow [2024-11-10 18:26:33,297 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) [2024-11-10 18:26:33,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:33,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:33,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:26:33,298 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)] === [2024-11-10 18:26:33,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1026680078, now seen corresponding path program 1 times [2024-11-10 18:26:33,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:33,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778034110] [2024-11-10 18:26:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:33,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:33,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:33,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778034110] [2024-11-10 18:26:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778034110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:33,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:33,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:26:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929231795] [2024-11-10 18:26:33,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:33,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 18:26:33,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 18:26:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:26:33,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 18:26:33,566 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) [2024-11-10 18:26:33,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:33,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 18:26:33,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:34,014 INFO L124 PetriNetUnfolderBase]: 527/1093 cut-off events. [2024-11-10 18:26:34,015 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 18:26:34,017 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. [2024-11-10 18:26:34,022 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 113 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2024-11-10 18:26:34,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 143 transitions, 570 flow [2024-11-10 18:26:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 18:26:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 18:26:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 279 transitions. [2024-11-10 18:26:34,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48776223776223776 [2024-11-10 18:26:34,025 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 70 flow. Second operand 13 states and 279 transitions. [2024-11-10 18:26:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 143 transitions, 570 flow [2024-11-10 18:26:34,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 143 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:26:34,029 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 207 flow [2024-11-10 18:26:34,030 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} [2024-11-10 18:26:34,030 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2024-11-10 18:26:34,031 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 207 flow [2024-11-10 18:26:34,031 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) [2024-11-10 18:26:34,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:34,031 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:34,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:26:34,031 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)] === [2024-11-10 18:26:34,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:34,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1972068853, now seen corresponding path program 1 times [2024-11-10 18:26:34,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:34,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020380962] [2024-11-10 18:26:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:34,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:34,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020380962] [2024-11-10 18:26:34,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020380962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:26:34,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236696525] [2024-11-10 18:26:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:34,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:26:34,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:26:34,159 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) [2024-11-10 18:26:34,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:26:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:34,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 18:26:34,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:26:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:34,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:26:34,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236696525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:34,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:26:34,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2024-11-10 18:26:34,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527679725] [2024-11-10 18:26:34,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:34,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:26:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:34,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:26:34,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:26:34,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-10 18:26:34,303 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) [2024-11-10 18:26:34,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:34,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-10 18:26:34,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:34,682 INFO L124 PetriNetUnfolderBase]: 502/1113 cut-off events. [2024-11-10 18:26:34,682 INFO L125 PetriNetUnfolderBase]: For 642/642 co-relation queries the response was YES. [2024-11-10 18:26:34,685 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. [2024-11-10 18:26:34,689 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 112 selfloop transitions, 18 changer transitions 0/142 dead transitions. [2024-11-10 18:26:34,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 142 transitions, 701 flow [2024-11-10 18:26:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 18:26:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 18:26:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-11-10 18:26:34,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5371900826446281 [2024-11-10 18:26:34,692 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 207 flow. Second operand 11 states and 260 transitions. [2024-11-10 18:26:34,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 142 transitions, 701 flow [2024-11-10 18:26:34,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 700 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:26:34,702 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 307 flow [2024-11-10 18:26:34,703 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} [2024-11-10 18:26:34,703 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2024-11-10 18:26:34,704 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 307 flow [2024-11-10 18:26:34,704 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) [2024-11-10 18:26:34,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:34,704 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:34,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:26:34,908 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 [2024-11-10 18:26:34,909 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)] === [2024-11-10 18:26:34,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1501674421, now seen corresponding path program 1 times [2024-11-10 18:26:34,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:34,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156909761] [2024-11-10 18:26:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:34,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:35,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:35,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156909761] [2024-11-10 18:26:35,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156909761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:35,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:35,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:26:35,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317751558] [2024-11-10 18:26:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:35,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:26:35,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:26:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:26:35,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-10 18:26:35,082 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) [2024-11-10 18:26:35,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:35,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-10 18:26:35,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:35,452 INFO L124 PetriNetUnfolderBase]: 565/1290 cut-off events. [2024-11-10 18:26:35,453 INFO L125 PetriNetUnfolderBase]: For 1630/1672 co-relation queries the response was YES. [2024-11-10 18:26:35,457 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. [2024-11-10 18:26:35,465 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 75 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-11-10 18:26:35,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 751 flow [2024-11-10 18:26:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:26:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:26:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-11-10 18:26:35,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2024-11-10 18:26:35,467 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 307 flow. Second operand 7 states and 150 transitions. [2024-11-10 18:26:35,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 751 flow [2024-11-10 18:26:35,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 108 transitions, 695 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-10 18:26:35,477 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 366 flow [2024-11-10 18:26:35,478 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} [2024-11-10 18:26:35,478 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-11-10 18:26:35,479 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 366 flow [2024-11-10 18:26:35,479 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) [2024-11-10 18:26:35,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:35,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:35,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:26:35,480 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)] === [2024-11-10 18:26:35,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:35,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1301228896, now seen corresponding path program 1 times [2024-11-10 18:26:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453177223] [2024-11-10 18:26:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453177223] [2024-11-10 18:26:35,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453177223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:35,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:35,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:26:35,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800702830] [2024-11-10 18:26:35,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:35,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:26:35,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:26:35,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:26:35,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-10 18:26:35,573 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) [2024-11-10 18:26:35,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:35,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-10 18:26:35,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:35,867 INFO L124 PetriNetUnfolderBase]: 601/1373 cut-off events. [2024-11-10 18:26:35,868 INFO L125 PetriNetUnfolderBase]: For 1817/1870 co-relation queries the response was YES. [2024-11-10 18:26:35,874 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. [2024-11-10 18:26:35,882 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 67 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-11-10 18:26:35,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 675 flow [2024-11-10 18:26:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:26:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:26:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-11-10 18:26:35,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-10 18:26:35,885 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 366 flow. Second operand 6 states and 128 transitions. [2024-11-10 18:26:35,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 675 flow [2024-11-10 18:26:35,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 95 transitions, 659 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:26:35,897 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 394 flow [2024-11-10 18:26:35,898 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} [2024-11-10 18:26:35,899 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 34 predicate places. [2024-11-10 18:26:35,900 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 394 flow [2024-11-10 18:26:35,902 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) [2024-11-10 18:26:35,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:35,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:35,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:26:35,903 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)] === [2024-11-10 18:26:35,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2088087918, now seen corresponding path program 1 times [2024-11-10 18:26:35,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:35,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871782272] [2024-11-10 18:26:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:35,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:35,922 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:26:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:35,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:26:35,962 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:26:35,964 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-10 18:26:35,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-10 18:26:35,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-10 18:26:35,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-10 18:26:35,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-10 18:26:35,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-10 18:26:35,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-10 18:26:35,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:26:35,968 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-10 18:26:36,011 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 18:26:36,013 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 18:26:36,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:26:36 BasicIcfg [2024-11-10 18:26:36,020 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 18:26:36,021 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 18:26:36,021 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 18:26:36,021 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 18:26:36,021 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:26:32" (3/4) ... [2024-11-10 18:26:36,024 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-10 18:26:36,025 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 18:26:36,026 INFO L158 Benchmark]: Toolchain (without parser) took 4247.66ms. Allocated memory was 192.9MB in the beginning and 272.6MB in the end (delta: 79.7MB). Free memory was 164.9MB in the beginning and 176.9MB in the end (delta: -12.0MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. [2024-11-10 18:26:36,027 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:26:36,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.11ms. Allocated memory is still 192.9MB. Free memory was 164.9MB in the beginning and 141.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 18:26:36,030 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.51ms. Allocated memory is still 192.9MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:26:36,030 INFO L158 Benchmark]: Boogie Preprocessor took 43.04ms. Allocated memory is still 192.9MB. Free memory was 139.7MB in the beginning and 137.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:26:36,031 INFO L158 Benchmark]: IcfgBuilder took 516.54ms. Allocated memory is still 192.9MB. Free memory was 137.7MB in the beginning and 145.6MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-10 18:26:36,031 INFO L158 Benchmark]: TraceAbstraction took 3230.52ms. Allocated memory was 192.9MB in the beginning and 272.6MB in the end (delta: 79.7MB). Free memory was 144.6MB in the beginning and 177.9MB in the end (delta: -33.4MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. [2024-11-10 18:26:36,031 INFO L158 Benchmark]: Witness Printer took 4.61ms. Allocated memory is still 272.6MB. Free memory was 177.9MB in the beginning and 176.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:26:36,033 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 117.4MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.11ms. Allocated memory is still 192.9MB. Free memory was 164.9MB in the beginning and 141.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.51ms. Allocated memory is still 192.9MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.04ms. Allocated memory is still 192.9MB. Free memory was 139.7MB in the beginning and 137.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 516.54ms. Allocated memory is still 192.9MB. Free memory was 137.7MB in the beginning and 145.6MB in the end (delta: -8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3230.52ms. Allocated memory was 192.9MB in the beginning and 272.6MB in the end (delta: 79.7MB). Free memory was 144.6MB in the beginning and 177.9MB in the end (delta: -33.4MB). Peak memory consumption was 49.5MB. Max. memory is 16.1GB. * Witness Printer took 4.61ms. Allocated memory is still 272.6MB. Free memory was 177.9MB in the beginning and 176.9MB in the end (delta: 1.0MB). 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: 3.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 452 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 447 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.6s 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, 0.4s 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, 0.7s 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 [2024-11-10 18:26:36,064 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-023d838-m [2024-11-10 18:26:38,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:26:38,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-10 18:26:38,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:26:38,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:26:38,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:26:38,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:26:38,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:26:38,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:26:38,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:26:38,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:26:38,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:26:38,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:26:38,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:26:38,653 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:26:38,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:26:38,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:26:38,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:26:38,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:26:38,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:26:38,656 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:26:38,657 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:26:38,657 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:26:38,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:26:38,657 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:26:38,660 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-10 18:26:38,661 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:26:38,661 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-10 18:26:38,661 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:26:38,661 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:26:38,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:26:38,661 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:26:38,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:26:38,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:26:38,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:26:38,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:26:38,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:26:38,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:26:38,662 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-10 18:26:38,663 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-10 18:26:38,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:26:38,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:26:38,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:26:38,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:26:38,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2024-11-10 18:26:39,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:26:39,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:26:39,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:26:39,167 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:26:39,167 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:26:39,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-10 18:26:40,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:26:41,082 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:26:41,082 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2024-11-10 18:26:41,104 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4e454bb/8576672b0ac0493d9594a908ede63843/FLAGbc9de92f8 [2024-11-10 18:26:41,364 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4e454bb/8576672b0ac0493d9594a908ede63843 [2024-11-10 18:26:41,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:26:41,369 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:26:41,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:26:41,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:26:41,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:26:41,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:26:41" (1/1) ... [2024-11-10 18:26:41,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d07a77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:41, skipping insertion in model container [2024-11-10 18:26:41,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:26:41" (1/1) ... [2024-11-10 18:26:41,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:26:41,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:26:41,977 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:26:42,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:26:42,078 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:26:42,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42 WrapperNode [2024-11-10 18:26:42,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:26:42,080 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:26:42,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:26:42,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:26:42,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,121 INFO L138 Inliner]: procedures = 170, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 86 [2024-11-10 18:26:42,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:26:42,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:26:42,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:26:42,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:26:42,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,159 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]. [2024-11-10 18:26:42,159 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,164 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:26:42,180 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:26:42,180 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:26:42,180 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:26:42,180 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (1/1) ... [2024-11-10 18:26:42,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:26:42,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:26:42,217 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) [2024-11-10 18:26:42,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:26:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:26:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-10 18:26:42,268 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-10 18:26:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-10 18:26:42,268 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-10 18:26:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-10 18:26:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:26:42,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:26:42,269 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:26:42,425 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:26:42,427 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:26:42,594 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:26:42,597 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:26:42,728 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:26:42,728 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:26:42,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:26:42 BoogieIcfgContainer [2024-11-10 18:26:42,729 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:26:42,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:26:42,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:26:42,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:26:42,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:26:41" (1/3) ... [2024-11-10 18:26:42,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f210c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:26:42, skipping insertion in model container [2024-11-10 18:26:42,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:42" (2/3) ... [2024-11-10 18:26:42,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f210c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:26:42, skipping insertion in model container [2024-11-10 18:26:42,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:26:42" (3/3) ... [2024-11-10 18:26:42,738 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-11-10 18:26:42,752 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:26:42,753 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-10 18:26:42,753 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:26:42,805 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:26:42,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 44 transitions, 102 flow [2024-11-10 18:26:42,863 INFO L124 PetriNetUnfolderBase]: 8/42 cut-off events. [2024-11-10 18:26:42,864 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:26:42,868 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. [2024-11-10 18:26:42,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 44 transitions, 102 flow [2024-11-10 18:26:42,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 94 flow [2024-11-10 18:26:42,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:26:42,890 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;@5b921741, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:26:42,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 18:26:42,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:26:42,903 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-10 18:26:42,904 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:26:42,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:42,905 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:42,906 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)] === [2024-11-10 18:26:42,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:42,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1907529051, now seen corresponding path program 1 times [2024-11-10 18:26:42,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:26:42,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506136804] [2024-11-10 18:26:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:42,927 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 [2024-11-10 18:26:42,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:26:42,930 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) [2024-11-10 18:26:42,932 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 [2024-11-10 18:26:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:43,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-10 18:26:43,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:26:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:43,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:26:43,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:26:43,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506136804] [2024-11-10 18:26:43,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506136804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:43,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:43,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:26:43,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627493406] [2024-11-10 18:26:43,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:43,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:26:43,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:26:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:26:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:26:43,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-11-10 18:26:43,099 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) [2024-11-10 18:26:43,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:43,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-11-10 18:26:43,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:43,248 INFO L124 PetriNetUnfolderBase]: 169/393 cut-off events. [2024-11-10 18:26:43,248 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 18:26:43,250 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. [2024-11-10 18:26:43,253 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 22 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2024-11-10 18:26:43,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 122 flow [2024-11-10 18:26:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:26:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:26:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-10 18:26:43,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-10 18:26:43,266 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 94 flow. Second operand 2 states and 54 transitions. [2024-11-10 18:26:43,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 122 flow [2024-11-10 18:26:43,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:26:43,270 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 70 flow [2024-11-10 18:26:43,274 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} [2024-11-10 18:26:43,279 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-10 18:26:43,280 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 70 flow [2024-11-10 18:26:43,280 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) [2024-11-10 18:26:43,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:43,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:43,288 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 [2024-11-10 18:26:43,481 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 [2024-11-10 18:26:43,483 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)] === [2024-11-10 18:26:43,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1026680078, now seen corresponding path program 1 times [2024-11-10 18:26:43,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:26:43,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168058535] [2024-11-10 18:26:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:43,484 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 [2024-11-10 18:26:43,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:26:43,494 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) [2024-11-10 18:26:43,508 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 [2024-11-10 18:26:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:43,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:26:43,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:26:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:43,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:26:43,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:26:43,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168058535] [2024-11-10 18:26:43,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168058535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:43,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:43,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:26:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715124807] [2024-11-10 18:26:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:43,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 18:26:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:26:43,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 18:26:43,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:26:43,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-10 18:26:43,883 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) [2024-11-10 18:26:43,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:43,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-10 18:26:43,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:44,404 INFO L124 PetriNetUnfolderBase]: 451/1017 cut-off events. [2024-11-10 18:26:44,405 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-10 18:26:44,407 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. [2024-11-10 18:26:44,411 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 98 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2024-11-10 18:26:44,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 124 transitions, 491 flow [2024-11-10 18:26:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 18:26:44,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 18:26:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 248 transitions. [2024-11-10 18:26:44,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.512396694214876 [2024-11-10 18:26:44,415 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 70 flow. Second operand 11 states and 248 transitions. [2024-11-10 18:26:44,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 124 transitions, 491 flow [2024-11-10 18:26:44,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 124 transitions, 491 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:26:44,419 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 181 flow [2024-11-10 18:26:44,420 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} [2024-11-10 18:26:44,420 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2024-11-10 18:26:44,421 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 181 flow [2024-11-10 18:26:44,421 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) [2024-11-10 18:26:44,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:44,421 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:44,425 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 [2024-11-10 18:26:44,624 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 [2024-11-10 18:26:44,625 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)] === [2024-11-10 18:26:44,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:44,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1972068853, now seen corresponding path program 1 times [2024-11-10 18:26:44,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:26:44,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285509100] [2024-11-10 18:26:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:44,627 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 [2024-11-10 18:26:44,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:26:44,632 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) [2024-11-10 18:26:44,634 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 [2024-11-10 18:26:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:44,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 18:26:44,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:26:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:44,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:26:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:44,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:26:44,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285509100] [2024-11-10 18:26:44,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285509100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:26:44,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:26:44,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2024-11-10 18:26:44,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347440880] [2024-11-10 18:26:44,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 18:26:44,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 18:26:44,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:26:44,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 18:26:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:26:44,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-10 18:26:44,962 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) [2024-11-10 18:26:44,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:44,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-10 18:26:44,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:46,493 INFO L124 PetriNetUnfolderBase]: 995/2043 cut-off events. [2024-11-10 18:26:46,493 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2024-11-10 18:26:46,500 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. [2024-11-10 18:26:46,508 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 246 selfloop transitions, 52 changer transitions 0/307 dead transitions. [2024-11-10 18:26:46,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 307 transitions, 1452 flow [2024-11-10 18:26:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 18:26:46,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-10 18:26:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 632 transitions. [2024-11-10 18:26:46,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-11-10 18:26:46,513 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 181 flow. Second operand 30 states and 632 transitions. [2024-11-10 18:26:46,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 307 transitions, 1452 flow [2024-11-10 18:26:46,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 307 transitions, 1451 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:26:46,544 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 517 flow [2024-11-10 18:26:46,545 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} [2024-11-10 18:26:46,545 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2024-11-10 18:26:46,546 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 517 flow [2024-11-10 18:26:46,546 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) [2024-11-10 18:26:46,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:46,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:46,551 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 (4)] Ended with exit code 0 [2024-11-10 18:26:46,746 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 [2024-11-10 18:26:46,747 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)] === [2024-11-10 18:26:46,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:46,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1501674421, now seen corresponding path program 1 times [2024-11-10 18:26:46,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:26:46,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111729243] [2024-11-10 18:26:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:46,749 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 [2024-11-10 18:26:46,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:26:46,752 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) [2024-11-10 18:26:46,753 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 [2024-11-10 18:26:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:46,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:26:46,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:26:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:46,846 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:26:46,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:26:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111729243] [2024-11-10 18:26:46,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111729243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:46,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:46,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:26:46,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029369690] [2024-11-10 18:26:46,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:46,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:26:46,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:26:46,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:26:46,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:26:46,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-10 18:26:46,851 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) [2024-11-10 18:26:46,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:46,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-10 18:26:46,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:47,309 INFO L124 PetriNetUnfolderBase]: 919/2083 cut-off events. [2024-11-10 18:26:47,310 INFO L125 PetriNetUnfolderBase]: For 3826/3908 co-relation queries the response was YES. [2024-11-10 18:26:47,316 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. [2024-11-10 18:26:47,358 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 109 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-11-10 18:26:47,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 152 transitions, 1261 flow [2024-11-10 18:26:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:26:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:26:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-11-10 18:26:47,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4967532467532468 [2024-11-10 18:26:47,361 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 517 flow. Second operand 7 states and 153 transitions. [2024-11-10 18:26:47,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 152 transitions, 1261 flow [2024-11-10 18:26:47,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 152 transitions, 937 flow, removed 116 selfloop flow, removed 14 redundant places. [2024-11-10 18:26:47,376 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 450 flow [2024-11-10 18:26:47,376 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} [2024-11-10 18:26:47,377 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-11-10 18:26:47,378 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 450 flow [2024-11-10 18:26:47,378 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) [2024-11-10 18:26:47,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:47,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:47,382 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 [2024-11-10 18:26:47,579 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 [2024-11-10 18:26:47,580 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)] === [2024-11-10 18:26:47,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:47,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1714270660, now seen corresponding path program 1 times [2024-11-10 18:26:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:26:47,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155990370] [2024-11-10 18:26:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:47,581 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 [2024-11-10 18:26:47,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:26:47,585 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) [2024-11-10 18:26:47,586 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 [2024-11-10 18:26:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:47,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 18:26:47,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:26:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:47,701 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:26:47,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 18:26:47,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155990370] [2024-11-10 18:26:47,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155990370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:47,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:47,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:26:47,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535055042] [2024-11-10 18:26:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:47,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:26:47,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 18:26:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:26:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:26:47,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-11-10 18:26:47,704 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) [2024-11-10 18:26:47,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:47,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-11-10 18:26:47,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:48,042 INFO L124 PetriNetUnfolderBase]: 995/2213 cut-off events. [2024-11-10 18:26:48,042 INFO L125 PetriNetUnfolderBase]: For 2115/2192 co-relation queries the response was YES. [2024-11-10 18:26:48,047 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. [2024-11-10 18:26:48,054 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 96 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-11-10 18:26:48,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 875 flow [2024-11-10 18:26:48,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:26:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:26:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-10 18:26:48,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-11-10 18:26:48,056 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 450 flow. Second operand 6 states and 130 transitions. [2024-11-10 18:26:48,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 875 flow [2024-11-10 18:26:48,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 129 transitions, 854 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:26:48,065 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 481 flow [2024-11-10 18:26:48,065 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} [2024-11-10 18:26:48,066 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2024-11-10 18:26:48,066 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 481 flow [2024-11-10 18:26:48,066 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) [2024-11-10 18:26:48,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:48,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:48,071 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 (6)] Forceful destruction successful, exit code 0 [2024-11-10 18:26:48,267 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 [2024-11-10 18:26:48,268 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)] === [2024-11-10 18:26:48,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1947867846, now seen corresponding path program 1 times [2024-11-10 18:26:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 18:26:48,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258868220] [2024-11-10 18:26:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:48,269 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 [2024-11-10 18:26:48,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 18:26:48,272 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) [2024-11-10 18:26:48,277 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 [2024-11-10 18:26:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:48,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:26:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:48,346 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-10 18:26:48,347 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:26:48,347 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-10 18:26:48,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-10 18:26:48,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-10 18:26:48,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-10 18:26:48,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-10 18:26:48,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-10 18:26:48,349 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-10 18:26:48,353 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 (7)] Ended with exit code 0 [2024-11-10 18:26:48,550 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 [2024-11-10 18:26:48,551 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-10 18:26:48,583 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 18:26:48,583 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 18:26:48,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 06:26:48 BasicIcfg [2024-11-10 18:26:48,588 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 18:26:48,590 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 18:26:48,590 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 18:26:48,590 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 18:26:48,590 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:26:42" (3/4) ... [2024-11-10 18:26:48,592 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-10 18:26:48,593 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 18:26:48,594 INFO L158 Benchmark]: Toolchain (without parser) took 7225.26ms. Allocated memory was 75.5MB in the beginning and 186.6MB in the end (delta: 111.1MB). Free memory was 39.8MB in the beginning and 110.1MB in the end (delta: -70.2MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2024-11-10 18:26:48,595 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:26:48,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.04ms. Allocated memory is still 75.5MB. Free memory was 39.6MB in the beginning and 39.3MB in the end (delta: 350.2kB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2024-11-10 18:26:48,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.85ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 37.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:26:48,596 INFO L158 Benchmark]: Boogie Preprocessor took 57.01ms. Allocated memory is still 75.5MB. Free memory was 37.2MB in the beginning and 35.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 18:26:48,596 INFO L158 Benchmark]: IcfgBuilder took 549.20ms. Allocated memory was 75.5MB in the beginning and 121.6MB in the end (delta: 46.1MB). Free memory was 34.8MB in the beginning and 77.5MB in the end (delta: -42.7MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-11-10 18:26:48,597 INFO L158 Benchmark]: TraceAbstraction took 5857.64ms. Allocated memory was 121.6MB in the beginning and 186.6MB in the end (delta: 65.0MB). Free memory was 76.8MB in the beginning and 110.1MB in the end (delta: -33.3MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2024-11-10 18:26:48,597 INFO L158 Benchmark]: Witness Printer took 3.47ms. Allocated memory is still 186.6MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 18:26:48,602 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.04ms. Allocated memory is still 75.5MB. Free memory was 39.6MB in the beginning and 39.3MB in the end (delta: 350.2kB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.85ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 37.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.01ms. Allocated memory is still 75.5MB. Free memory was 37.2MB in the beginning and 35.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 549.20ms. Allocated memory was 75.5MB in the beginning and 121.6MB in the end (delta: 46.1MB). Free memory was 34.8MB in the beginning and 77.5MB in the end (delta: -42.7MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5857.64ms. Allocated memory was 121.6MB in the beginning and 186.6MB in the end (delta: 65.0MB). Free memory was 76.8MB in the beginning and 110.1MB in the end (delta: -33.3MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Witness Printer took 3.47ms. Allocated memory is still 186.6MB. Free memory is still 110.1MB. 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: 5.7s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 774 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 769 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 1.1s 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, 0.7s 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 [2024-11-10 18:26:48,630 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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample