./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c -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 e0114971c55bb3ac56cba53b1f36a4abfb42729c079f90200b21654f0e6a33fd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:39:34,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:39:34,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:39:34,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:39:34,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:39:34,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:39:34,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:39:34,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:39:34,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:39:34,225 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:39:34,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:39:34,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:39:34,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:39:34,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:39:34,227 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:39:34,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:39:34,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:39:34,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:39:34,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:39:34,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:39:34,229 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:39:34,229 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:39:34,230 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:39:34,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:39:34,234 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:39:34,234 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:39:34,234 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:39:34,234 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:39:34,235 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:39:34,235 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:39:34,235 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:39:34,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:39:34,236 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:39:34,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:39:34,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:39:34,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:39:34,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:39:34,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:39:34,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:39:34,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:39:34,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:39:34,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:39:34,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0114971c55bb3ac56cba53b1f36a4abfb42729c079f90200b21654f0e6a33fd [2024-10-13 12:39:34,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:39:34,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:39:34,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:39:34,559 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:39:34,560 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:39:34,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2024-10-13 12:39:36,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:39:36,196 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:39:36,197 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2024-10-13 12:39:36,205 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd748afa/8abef09c0d23497887a489a344b785c3/FLAG33e399faf [2024-10-13 12:39:36,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd748afa/8abef09c0d23497887a489a344b785c3 [2024-10-13 12:39:36,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:39:36,592 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:39:36,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:39:36,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:39:36,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:39:36,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b928e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36, skipping insertion in model container [2024-10-13 12:39:36,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:39:36,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:39:36,862 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:39:36,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:39:36,912 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:39:36,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36 WrapperNode [2024-10-13 12:39:36,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:39:36,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:39:36,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:39:36,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:39:36,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,951 INFO L138 Inliner]: procedures = 19, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 53 [2024-10-13 12:39:36,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:39:36,954 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:39:36,954 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:39:36,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:39:36,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,967 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,985 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]. [2024-10-13 12:39:36,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:36,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:37,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:39:37,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:39:37,010 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:39:37,010 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:39:37,011 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (1/1) ... [2024-10-13 12:39:37,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:39:37,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:37,048 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) [2024-10-13 12:39:37,051 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 [2024-10-13 12:39:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:39:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:39:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:39:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:39:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:39:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:39:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:39:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:39:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:39:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:39:37,102 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:39:37,194 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:39:37,197 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:39:37,403 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:39:37,403 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:39:37,533 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:39:37,534 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 12:39:37,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:39:37 BoogieIcfgContainer [2024-10-13 12:39:37,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:39:37,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:39:37,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:39:37,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:39:37,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:39:36" (1/3) ... [2024-10-13 12:39:37,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51458513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:39:37, skipping insertion in model container [2024-10-13 12:39:37,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:39:36" (2/3) ... [2024-10-13 12:39:37,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51458513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:39:37, skipping insertion in model container [2024-10-13 12:39:37,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:39:37" (3/3) ... [2024-10-13 12:39:37,541 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2024-10-13 12:39:37,554 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:39:37,554 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:39:37,554 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:39:37,607 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 12:39:37,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 28 transitions, 70 flow [2024-10-13 12:39:37,663 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-10-13 12:39:37,663 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:39:37,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 2/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-10-13 12:39:37,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 28 transitions, 70 flow [2024-10-13 12:39:37,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 25 transitions, 62 flow [2024-10-13 12:39:37,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:39:37,687 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;@43bacb43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:39:37,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 12:39:37,698 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:39:37,698 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-10-13 12:39:37,698 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:39:37,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:37,700 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:37,701 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:37,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1526717730, now seen corresponding path program 1 times [2024-10-13 12:39:37,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:37,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555824510] [2024-10-13 12:39:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:38,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:38,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555824510] [2024-10-13 12:39:38,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555824510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:38,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:38,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:39:38,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717500794] [2024-10-13 12:39:38,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:38,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:39:38,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:38,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:39:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:39:38,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-10-13 12:39:38,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2024-10-13 12:39:38,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:38,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-10-13 12:39:38,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:38,287 INFO L124 PetriNetUnfolderBase]: 161/293 cut-off events. [2024-10-13 12:39:38,288 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-13 12:39:38,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 293 events. 161/293 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1109 event pairs, 32 based on Foata normal form. 2/289 useless extension candidates. Maximal degree in co-relation 526. Up to 242 conditions per place. [2024-10-13 12:39:38,294 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 23 selfloop transitions, 3 changer transitions 1/32 dead transitions. [2024-10-13 12:39:38,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 139 flow [2024-10-13 12:39:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:39:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:39:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-10-13 12:39:38,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-10-13 12:39:38,308 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 62 flow. Second operand 3 states and 53 transitions. [2024-10-13 12:39:38,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 139 flow [2024-10-13 12:39:38,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 125 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:39:38,315 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 69 flow [2024-10-13 12:39:38,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2024-10-13 12:39:38,320 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2024-10-13 12:39:38,321 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 69 flow [2024-10-13 12:39:38,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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) [2024-10-13 12:39:38,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:38,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:38,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:39:38,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:38,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -240897554, now seen corresponding path program 1 times [2024-10-13 12:39:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:38,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581830997] [2024-10-13 12:39:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:38,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:38,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:38,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581830997] [2024-10-13 12:39:38,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581830997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:38,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:38,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:39:38,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881022271] [2024-10-13 12:39:38,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:38,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:38,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:38,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-10-13 12:39:38,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-13 12:39:38,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:38,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-10-13 12:39:38,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:38,727 INFO L124 PetriNetUnfolderBase]: 199/361 cut-off events. [2024-10-13 12:39:38,727 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-13 12:39:38,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 361 events. 199/361 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1466 event pairs, 32 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 200. Up to 202 conditions per place. [2024-10-13 12:39:38,732 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 35 selfloop transitions, 9 changer transitions 3/53 dead transitions. [2024-10-13 12:39:38,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 53 transitions, 229 flow [2024-10-13 12:39:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-10-13 12:39:38,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2024-10-13 12:39:38,736 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 69 flow. Second operand 5 states and 87 transitions. [2024-10-13 12:39:38,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 53 transitions, 229 flow [2024-10-13 12:39:38,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 53 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:38,740 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 123 flow [2024-10-13 12:39:38,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2024-10-13 12:39:38,743 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-10-13 12:39:38,743 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 123 flow [2024-10-13 12:39:38,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-13 12:39:38,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:38,744 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:38,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:39:38,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:38,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1086785072, now seen corresponding path program 2 times [2024-10-13 12:39:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:38,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039405963] [2024-10-13 12:39:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:38,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:38,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:38,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039405963] [2024-10-13 12:39:38,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039405963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:38,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:38,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:39:38,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446115822] [2024-10-13 12:39:38,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:38,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:38,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:38,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:38,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:38,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-10-13 12:39:38,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-13 12:39:38,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:38,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-10-13 12:39:38,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:39,071 INFO L124 PetriNetUnfolderBase]: 173/334 cut-off events. [2024-10-13 12:39:39,072 INFO L125 PetriNetUnfolderBase]: For 220/224 co-relation queries the response was YES. [2024-10-13 12:39:39,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 334 events. 173/334 cut-off events. For 220/224 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1359 event pairs, 11 based on Foata normal form. 21/349 useless extension candidates. Maximal degree in co-relation 278. Up to 132 conditions per place. [2024-10-13 12:39:39,078 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 38 selfloop transitions, 12 changer transitions 3/59 dead transitions. [2024-10-13 12:39:39,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 59 transitions, 325 flow [2024-10-13 12:39:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-10-13 12:39:39,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-13 12:39:39,080 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 123 flow. Second operand 5 states and 88 transitions. [2024-10-13 12:39:39,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 59 transitions, 325 flow [2024-10-13 12:39:39,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:39:39,087 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 209 flow [2024-10-13 12:39:39,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-10-13 12:39:39,089 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-10-13 12:39:39,089 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 209 flow [2024-10-13 12:39:39,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-10-13 12:39:39,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:39,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:39,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:39:39,091 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:39,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:39,092 INFO L85 PathProgramCache]: Analyzing trace with hash 841560209, now seen corresponding path program 1 times [2024-10-13 12:39:39,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:39,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972360605] [2024-10-13 12:39:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:39,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:39,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972360605] [2024-10-13 12:39:39,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972360605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:39,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:39,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:39:39,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730314953] [2024-10-13 12:39:39,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:39,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:39,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:39,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-10-13 12:39:39,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-13 12:39:39,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:39,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-10-13 12:39:39,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:39,333 INFO L124 PetriNetUnfolderBase]: 178/345 cut-off events. [2024-10-13 12:39:39,334 INFO L125 PetriNetUnfolderBase]: For 771/777 co-relation queries the response was YES. [2024-10-13 12:39:39,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 345 events. 178/345 cut-off events. For 771/777 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1415 event pairs, 23 based on Foata normal form. 7/343 useless extension candidates. Maximal degree in co-relation 435. Up to 215 conditions per place. [2024-10-13 12:39:39,339 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 42 selfloop transitions, 8 changer transitions 4/60 dead transitions. [2024-10-13 12:39:39,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 411 flow [2024-10-13 12:39:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-10-13 12:39:39,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-10-13 12:39:39,344 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 209 flow. Second operand 5 states and 85 transitions. [2024-10-13 12:39:39,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 411 flow [2024-10-13 12:39:39,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 407 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-13 12:39:39,353 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 256 flow [2024-10-13 12:39:39,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-10-13 12:39:39,355 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-10-13 12:39:39,356 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 256 flow [2024-10-13 12:39:39,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-13 12:39:39,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:39,356 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:39,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:39:39,357 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:39,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1494218071, now seen corresponding path program 2 times [2024-10-13 12:39:39,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:39,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060647223] [2024-10-13 12:39:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:39,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:39,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:39,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060647223] [2024-10-13 12:39:39,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060647223] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:39:39,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:39:39,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:39:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257875404] [2024-10-13 12:39:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:39:39,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:39:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:39:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:39:39,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-10-13 12:39:39,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-13 12:39:39,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:39,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-10-13 12:39:39,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:39,583 INFO L124 PetriNetUnfolderBase]: 159/318 cut-off events. [2024-10-13 12:39:39,583 INFO L125 PetriNetUnfolderBase]: For 892/900 co-relation queries the response was YES. [2024-10-13 12:39:39,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 318 events. 159/318 cut-off events. For 892/900 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1184 event pairs, 24 based on Foata normal form. 18/333 useless extension candidates. Maximal degree in co-relation 837. Up to 149 conditions per place. [2024-10-13 12:39:39,586 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 41 selfloop transitions, 12 changer transitions 2/61 dead transitions. [2024-10-13 12:39:39,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 466 flow [2024-10-13 12:39:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:39:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:39:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-10-13 12:39:39,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-10-13 12:39:39,588 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 256 flow. Second operand 5 states and 83 transitions. [2024-10-13 12:39:39,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 466 flow [2024-10-13 12:39:39,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 450 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:39,593 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 319 flow [2024-10-13 12:39:39,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-10-13 12:39:39,594 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-10-13 12:39:39,595 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 319 flow [2024-10-13 12:39:39,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-10-13 12:39:39,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:39,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:39,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:39:39,596 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:39,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:39,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1496255439, now seen corresponding path program 1 times [2024-10-13 12:39:39,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:39,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282399413] [2024-10-13 12:39:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:39,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:39,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:39,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282399413] [2024-10-13 12:39:39,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282399413] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:39,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333423946] [2024-10-13 12:39:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:39,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:39,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:39,853 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) [2024-10-13 12:39:39,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:39:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:39,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:39:39,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:40,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:40,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333423946] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:40,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:40,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-13 12:39:40,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886417341] [2024-10-13 12:39:40,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:40,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:39:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:39:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:39:40,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-10-13 12:39:40,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2024-10-13 12:39:40,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:40,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-10-13 12:39:40,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:40,318 INFO L124 PetriNetUnfolderBase]: 164/318 cut-off events. [2024-10-13 12:39:40,318 INFO L125 PetriNetUnfolderBase]: For 1088/1106 co-relation queries the response was YES. [2024-10-13 12:39:40,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 318 events. 164/318 cut-off events. For 1088/1106 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1157 event pairs, 37 based on Foata normal form. 3/308 useless extension candidates. Maximal degree in co-relation 941. Up to 104 conditions per place. [2024-10-13 12:39:40,321 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2024-10-13 12:39:40,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 539 flow [2024-10-13 12:39:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:39:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:39:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-10-13 12:39:40,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-10-13 12:39:40,323 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 319 flow. Second operand 6 states and 82 transitions. [2024-10-13 12:39:40,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 539 flow [2024-10-13 12:39:40,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 516 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:40,329 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-10-13 12:39:40,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-10-13 12:39:40,332 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-10-13 12:39:40,333 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-10-13 12:39:40,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2024-10-13 12:39:40,336 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-10-13 12:39:40,336 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-13 12:39:40,338 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-13 12:39:40,338 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-13 12:39:40,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:39:40,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 12:39:40,539 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-10-13 12:39:40,543 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 12:39:40,543 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 12:39:40,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:39:40 BasicIcfg [2024-10-13 12:39:40,550 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 12:39:40,551 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 12:39:40,551 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 12:39:40,552 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 12:39:40,552 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:39:37" (3/4) ... [2024-10-13 12:39:40,558 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 12:39:40,561 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-13 12:39:40,562 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-13 12:39:40,568 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 55 nodes and edges [2024-10-13 12:39:40,569 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-13 12:39:40,569 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-13 12:39:40,569 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 12:39:40,665 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 12:39:40,666 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 12:39:40,666 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 12:39:40,667 INFO L158 Benchmark]: Toolchain (without parser) took 4074.98ms. Allocated memory is still 153.1MB. Free memory was 114.2MB in the beginning and 50.1MB in the end (delta: 64.2MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. [2024-10-13 12:39:40,667 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:39:40,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.07ms. Allocated memory is still 153.1MB. Free memory was 114.2MB in the beginning and 101.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 12:39:40,668 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.96ms. Allocated memory is still 153.1MB. Free memory was 101.5MB in the beginning and 100.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:39:40,668 INFO L158 Benchmark]: Boogie Preprocessor took 51.44ms. Allocated memory is still 153.1MB. Free memory was 100.0MB in the beginning and 98.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:39:40,668 INFO L158 Benchmark]: RCFGBuilder took 528.13ms. Allocated memory is still 153.1MB. Free memory was 98.1MB in the beginning and 74.4MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-13 12:39:40,668 INFO L158 Benchmark]: TraceAbstraction took 3014.66ms. Allocated memory is still 153.1MB. Free memory was 73.6MB in the beginning and 55.3MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-13 12:39:40,668 INFO L158 Benchmark]: Witness Printer took 114.97ms. Allocated memory is still 153.1MB. Free memory was 55.3MB in the beginning and 50.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-13 12:39:40,670 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.07ms. Allocated memory is still 153.1MB. Free memory was 114.2MB in the beginning and 101.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.96ms. Allocated memory is still 153.1MB. Free memory was 101.5MB in the beginning and 100.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.44ms. Allocated memory is still 153.1MB. Free memory was 100.0MB in the beginning and 98.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 528.13ms. Allocated memory is still 153.1MB. Free memory was 98.1MB in the beginning and 74.4MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3014.66ms. Allocated memory is still 153.1MB. Free memory was 73.6MB in the beginning and 55.3MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 114.97ms. Allocated memory is still 153.1MB. Free memory was 55.3MB in the beginning and 50.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 69]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 94 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 88 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 424 IncrementalHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 2 mSDtfsCounter, 424 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=319occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 869 SizeOfPredicates, 3 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 4/10 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 12:39:40,692 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: TRUE