./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c --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/weaver/popl20-threaded-sum-3.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 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:22:49,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:22:49,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:22:49,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:22:49,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:22:49,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:22:49,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:22:49,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:22:49,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:22:49,397 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:22:49,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:22:49,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:22:49,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:22:49,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:22:49,401 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:22:49,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:22:49,401 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:22:49,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:22:49,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:22:49,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:22:49,402 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:22:49,403 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:22:49,403 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:22:49,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:22:49,404 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:22:49,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:22:49,404 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:22:49,404 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:22:49,405 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:22:49,405 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:22:49,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:22:49,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:22:49,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:22:49,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:22:49,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:22:49,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:22:49,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:22:49,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:22:49,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:22:49,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:22:49,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:22:49,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:22:49,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ff96f1177b851e0082faef897c2fcf87c2462cab57ba2153c754c5e198aaf06 [2024-11-10 18:22:49,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:22:49,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:22:49,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:22:49,732 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:22:49,733 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:22:49,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2024-11-10 18:22:51,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:22:51,481 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:22:51,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2024-11-10 18:22:51,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1a2b7e88/c3a54056274542babc30c561de21ff90/FLAG95476a021 [2024-11-10 18:22:51,822 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1a2b7e88/c3a54056274542babc30c561de21ff90 [2024-11-10 18:22:51,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:22:51,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:22:51,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:22:51,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:22:51,831 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:22:51,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:22:51" (1/1) ... [2024-11-10 18:22:51,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab832a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:51, skipping insertion in model container [2024-11-10 18:22:51,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:22:51" (1/1) ... [2024-11-10 18:22:51,864 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:22:52,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:22:52,098 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:22:52,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:22:52,151 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:22:52,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52 WrapperNode [2024-11-10 18:22:52,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:22:52,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:22:52,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:22:52,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:22:52,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,188 INFO L138 Inliner]: procedures = 21, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-10 18:22:52,189 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:22:52,189 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:22:52,190 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:22:52,190 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:22:52,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,214 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,243 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 18:22:52,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,268 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:22:52,281 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:22:52,281 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:22:52,281 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:22:52,282 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (1/1) ... [2024-11-10 18:22:52,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:22:52,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:22:52,317 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 18:22:52,320 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 18:22:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:22:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:22:52,365 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:22:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:22:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:22:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 18:22:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 18:22:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:22:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 18:22:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 18:22:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:22:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:22:52,368 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 18:22:52,456 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:22:52,458 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:22:52,709 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:22:52,710 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:22:52,876 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:22:52,876 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:22:52,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:22:52 BoogieIcfgContainer [2024-11-10 18:22:52,877 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:22:52,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:22:52,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:22:52,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:22:52,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:22:51" (1/3) ... [2024-11-10 18:22:52,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415b7e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:22:52, skipping insertion in model container [2024-11-10 18:22:52,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:22:52" (2/3) ... [2024-11-10 18:22:52,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415b7e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:22:52, skipping insertion in model container [2024-11-10 18:22:52,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:22:52" (3/3) ... [2024-11-10 18:22:52,887 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2024-11-10 18:22:52,904 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:22:52,905 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:22:52,906 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:22:52,970 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 18:22:53,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 46 transitions, 113 flow [2024-11-10 18:22:53,050 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2024-11-10 18:22:53,050 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 18:22:53,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 43 events. 6/43 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-10 18:22:53,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 46 transitions, 113 flow [2024-11-10 18:22:53,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 102 flow [2024-11-10 18:22:53,066 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:22:53,073 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;@60ad52d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:22:53,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 18:22:53,087 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:22:53,091 INFO L124 PetriNetUnfolderBase]: 6/39 cut-off events. [2024-11-10 18:22:53,091 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 18:22:53,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:53,092 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, 1] [2024-11-10 18:22:53,093 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:22:53,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2071388815, now seen corresponding path program 1 times [2024-11-10 18:22:53,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:53,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969902847] [2024-11-10 18:22:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:53,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:53,358 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 18:22:53,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:53,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969902847] [2024-11-10 18:22:53,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969902847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:22:53,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:22:53,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:22:53,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476853511] [2024-11-10 18:22:53,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:22:53,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:22:53,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:53,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:22:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:22:53,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-11-10 18:22:53,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 18:22:53,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:53,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-11-10 18:22:53,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:53,669 INFO L124 PetriNetUnfolderBase]: 518/831 cut-off events. [2024-11-10 18:22:53,669 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-10 18:22:53,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 831 events. 518/831 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4222 event pairs, 378 based on Foata normal form. 141/887 useless extension candidates. Maximal degree in co-relation 1468. Up to 747 conditions per place. [2024-11-10 18:22:53,683 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 24 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2024-11-10 18:22:53,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 140 flow [2024-11-10 18:22:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:22:53,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:22:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-11-10 18:22:53,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-10 18:22:53,696 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 102 flow. Second operand 2 states and 62 transitions. [2024-11-10 18:22:53,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 140 flow [2024-11-10 18:22:53,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 18:22:53,703 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 80 flow [2024-11-10 18:22:53,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-10 18:22:53,711 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-10 18:22:53,711 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 80 flow [2024-11-10 18:22:53,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 18:22:53,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:53,712 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, 1, 1, 1, 1] [2024-11-10 18:22:53,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:22:53,713 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:22:53,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:53,714 INFO L85 PathProgramCache]: Analyzing trace with hash 342035050, now seen corresponding path program 1 times [2024-11-10 18:22:53,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:53,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221197412] [2024-11-10 18:22:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:53,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:54,237 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 18:22:54,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221197412] [2024-11-10 18:22:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221197412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:22:54,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:22:54,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:22:54,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652416547] [2024-11-10 18:22:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:22:54,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:22:54,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:22:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:22:54,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-10 18:22:54,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 18:22:54,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:54,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-10 18:22:54,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:54,580 INFO L124 PetriNetUnfolderBase]: 968/1586 cut-off events. [2024-11-10 18:22:54,581 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 18:22:54,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3015 conditions, 1586 events. 968/1586 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8553 event pairs, 70 based on Foata normal form. 70/1614 useless extension candidates. Maximal degree in co-relation 3012. Up to 960 conditions per place. [2024-11-10 18:22:54,598 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 57 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-11-10 18:22:54,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 77 transitions, 296 flow [2024-11-10 18:22:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:22:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:22:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-11-10 18:22:54,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6391304347826087 [2024-11-10 18:22:54,603 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 80 flow. Second operand 5 states and 147 transitions. [2024-11-10 18:22:54,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 77 transitions, 296 flow [2024-11-10 18:22:54,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:22:54,608 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 140 flow [2024-11-10 18:22:54,608 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2024-11-10 18:22:54,609 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2024-11-10 18:22:54,610 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 140 flow [2024-11-10 18:22:54,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 18:22:54,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:54,611 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:54,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:22:54,612 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:22:54,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash 775221282, now seen corresponding path program 1 times [2024-11-10 18:22:54,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:54,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565366799] [2024-11-10 18:22:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:54,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:22:55,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:55,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565366799] [2024-11-10 18:22:55,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565366799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:22:55,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:22:55,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:22:55,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360643749] [2024-11-10 18:22:55,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:22:55,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:22:55,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:22:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:22:55,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-10 18:22:55,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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 18:22:55,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:55,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-10 18:22:55,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:55,308 INFO L124 PetriNetUnfolderBase]: 1217/2034 cut-off events. [2024-11-10 18:22:55,309 INFO L125 PetriNetUnfolderBase]: For 1161/1197 co-relation queries the response was YES. [2024-11-10 18:22:55,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4868 conditions, 2034 events. 1217/2034 cut-off events. For 1161/1197 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 11608 event pairs, 255 based on Foata normal form. 51/1988 useless extension candidates. Maximal degree in co-relation 4861. Up to 1433 conditions per place. [2024-11-10 18:22:55,327 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 49 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2024-11-10 18:22:55,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 361 flow [2024-11-10 18:22:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:22:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:22:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-10 18:22:55,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6195652173913043 [2024-11-10 18:22:55,332 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 140 flow. Second operand 4 states and 114 transitions. [2024-11-10 18:22:55,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 361 flow [2024-11-10 18:22:55,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:22:55,338 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 208 flow [2024-11-10 18:22:55,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2024-11-10 18:22:55,338 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-11-10 18:22:55,339 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 208 flow [2024-11-10 18:22:55,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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 18:22:55,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:55,340 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:55,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:22:55,340 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:22:55,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:55,341 INFO L85 PathProgramCache]: Analyzing trace with hash -603384606, now seen corresponding path program 1 times [2024-11-10 18:22:55,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:55,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853553204] [2024-11-10 18:22:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:55,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:22:55,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:55,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853553204] [2024-11-10 18:22:55,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853553204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:22:55,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:22:55,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:22:55,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149221834] [2024-11-10 18:22:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:22:55,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:22:55,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:55,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:22:55,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:22:55,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-10 18:22:55,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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 18:22:55,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:55,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-10 18:22:55,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:55,884 INFO L124 PetriNetUnfolderBase]: 1346/2343 cut-off events. [2024-11-10 18:22:55,885 INFO L125 PetriNetUnfolderBase]: For 2756/2871 co-relation queries the response was YES. [2024-11-10 18:22:55,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6049 conditions, 2343 events. 1346/2343 cut-off events. For 2756/2871 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14490 event pairs, 179 based on Foata normal form. 72/2356 useless extension candidates. Maximal degree in co-relation 6040. Up to 1068 conditions per place. [2024-11-10 18:22:55,904 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 66 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-10 18:22:55,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 479 flow [2024-11-10 18:22:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:22:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:22:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-10 18:22:55,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6195652173913043 [2024-11-10 18:22:55,907 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 208 flow. Second operand 4 states and 114 transitions. [2024-11-10 18:22:55,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 479 flow [2024-11-10 18:22:55,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 479 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:22:55,912 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 222 flow [2024-11-10 18:22:55,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-10 18:22:55,913 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2024-11-10 18:22:55,914 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 222 flow [2024-11-10 18:22:55,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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 18:22:55,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:55,915 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:55,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:22:55,916 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:22:55,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash -962417224, now seen corresponding path program 1 times [2024-11-10 18:22:55,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:55,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50547817] [2024-11-10 18:22:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:55,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:56,274 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 18:22:56,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:56,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50547817] [2024-11-10 18:22:56,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50547817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:22:56,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:22:56,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:22:56,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110270135] [2024-11-10 18:22:56,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:22:56,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:22:56,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:22:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:22:56,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-10 18:22:56,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 18:22:56,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:56,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-10 18:22:56,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:56,707 INFO L124 PetriNetUnfolderBase]: 1906/3201 cut-off events. [2024-11-10 18:22:56,707 INFO L125 PetriNetUnfolderBase]: For 3786/3849 co-relation queries the response was YES. [2024-11-10 18:22:56,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8811 conditions, 3201 events. 1906/3201 cut-off events. For 3786/3849 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 20294 event pairs, 557 based on Foata normal form. 71/3150 useless extension candidates. Maximal degree in co-relation 8800. Up to 1911 conditions per place. [2024-11-10 18:22:56,731 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 64 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-11-10 18:22:56,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 508 flow [2024-11-10 18:22:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:22:56,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:22:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-10 18:22:56,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6217391304347826 [2024-11-10 18:22:56,734 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 222 flow. Second operand 5 states and 143 transitions. [2024-11-10 18:22:56,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 508 flow [2024-11-10 18:22:56,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:22:56,739 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 255 flow [2024-11-10 18:22:56,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-10 18:22:56,740 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-10 18:22:56,740 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 255 flow [2024-11-10 18:22:56,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 18:22:56,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:56,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:56,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:22:56,742 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:22:56,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash -352774286, now seen corresponding path program 2 times [2024-11-10 18:22:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:56,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584575602] [2024-11-10 18:22:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:56,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:22:56,934 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 18:22:56,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:22:56,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584575602] [2024-11-10 18:22:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584575602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:22:56,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:22:56,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:22:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439511792] [2024-11-10 18:22:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:22:56,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:22:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:22:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:22:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:22:56,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-10 18:22:56,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 18:22:56,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:22:56,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-10 18:22:56,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:22:57,331 INFO L124 PetriNetUnfolderBase]: 2194/3611 cut-off events. [2024-11-10 18:22:57,331 INFO L125 PetriNetUnfolderBase]: For 4868/5001 co-relation queries the response was YES. [2024-11-10 18:22:57,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10550 conditions, 3611 events. 2194/3611 cut-off events. For 4868/5001 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22166 event pairs, 335 based on Foata normal form. 92/3665 useless extension candidates. Maximal degree in co-relation 10538. Up to 1883 conditions per place. [2024-11-10 18:22:57,362 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 83 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2024-11-10 18:22:57,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 677 flow [2024-11-10 18:22:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:22:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:22:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-11-10 18:22:57,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6565217391304348 [2024-11-10 18:22:57,365 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 255 flow. Second operand 5 states and 151 transitions. [2024-11-10 18:22:57,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 677 flow [2024-11-10 18:22:57,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 106 transitions, 649 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:22:57,375 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 319 flow [2024-11-10 18:22:57,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-10 18:22:57,376 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-11-10 18:22:57,377 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 319 flow [2024-11-10 18:22:57,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 18:22:57,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:22:57,378 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:22:57,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:22:57,378 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:22:57,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:22:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash 292907382, now seen corresponding path program 1 times [2024-11-10 18:22:57,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:22:57,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054624170] [2024-11-10 18:22:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:22:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:22:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:23:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:23:00,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:23:00,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054624170] [2024-11-10 18:23:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054624170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:23:00,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122134470] [2024-11-10 18:23:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:23:00,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:23:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:23:00,026 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 18:23:00,027 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 18:23:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:23:00,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 18:23:00,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:23:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:23:01,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:23:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:23:03,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122134470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:23:03,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:23:03,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2024-11-10 18:23:03,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488383472] [2024-11-10 18:23:03,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:23:03,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 18:23:03,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:23:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 18:23:03,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-11-10 18:23:03,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-10 18:23:03,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 319 flow. Second operand has 24 states, 24 states have (on average 17.125) internal successors, (411), 24 states have internal predecessors, (411), 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 18:23:03,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:23:03,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-10 18:23:03,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:23:46,940 WARN L286 SmtUtils]: Spent 30.08s on a formula simplification. DAG size of input: 99 DAG size of output: 61 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-10 18:24:09,009 INFO L124 PetriNetUnfolderBase]: 23562/37783 cut-off events. [2024-11-10 18:24:09,010 INFO L125 PetriNetUnfolderBase]: For 78717/79305 co-relation queries the response was YES. [2024-11-10 18:24:09,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117149 conditions, 37783 events. 23562/37783 cut-off events. For 78717/79305 co-relation queries the response was YES. Maximal size of possible extension queue 2092. Compared 309836 event pairs, 751 based on Foata normal form. 98/37749 useless extension candidates. Maximal degree in co-relation 117134. Up to 8323 conditions per place. [2024-11-10 18:24:09,287 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 558 selfloop transitions, 299 changer transitions 429/1296 dead transitions. [2024-11-10 18:24:09,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 1296 transitions, 8605 flow [2024-11-10 18:24:09,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-10 18:24:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2024-11-10 18:24:09,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 2711 transitions. [2024-11-10 18:24:09,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357707509881423 [2024-11-10 18:24:09,301 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 319 flow. Second operand 110 states and 2711 transitions. [2024-11-10 18:24:09,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 1296 transitions, 8605 flow [2024-11-10 18:24:09,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 1296 transitions, 8571 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:09,407 INFO L231 Difference]: Finished difference. Result has 234 places, 364 transitions, 3754 flow [2024-11-10 18:24:09,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=110, PETRI_FLOW=3754, PETRI_PLACES=234, PETRI_TRANSITIONS=364} [2024-11-10 18:24:09,408 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 188 predicate places. [2024-11-10 18:24:09,409 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 364 transitions, 3754 flow [2024-11-10 18:24:09,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.125) internal successors, (411), 24 states have internal predecessors, (411), 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 18:24:09,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:09,409 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:09,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:24:09,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:09,616 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:24:09,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:09,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1132572924, now seen corresponding path program 2 times [2024-11-10 18:24:09,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:09,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614946502] [2024-11-10 18:24:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:09,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:11,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:11,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614946502] [2024-11-10 18:24:11,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614946502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:11,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591702281] [2024-11-10 18:24:11,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:24:11,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:11,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:11,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:11,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:24:11,773 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:24:11,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:24:11,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 18:24:11,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:17,641 INFO L311 TraceCheckSpWp]: Computing backward predicates...