./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/unroll-cond-5.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/unroll-cond-5.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 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:24:29,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:24:29,391 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:24:29,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:24:29,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:24:29,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:24:29,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:24:29,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:24:29,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:24:29,432 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:24:29,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:24:29,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:24:29,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:24:29,434 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:24:29,435 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:24:29,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:24:29,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:24:29,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:24:29,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:24:29,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:24:29,437 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:24:29,441 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:24:29,441 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:24:29,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:24:29,442 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:24:29,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:24:29,442 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:24:29,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:24:29,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:24:29,443 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:24:29,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:24:29,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:24:29,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:24:29,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:29,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:24:29,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:24:29,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:24:29,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:24:29,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:24:29,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:24:29,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:24:29,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:24:29,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2024-11-10 18:24:29,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:24:29,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:24:29,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:24:29,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:24:29,737 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:24:29,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-11-10 18:24:31,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:24:31,741 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:24:31,741 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-11-10 18:24:31,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67d8b460f/05c2e0424ccb407f9f8200f89f24792d/FLAGc857bb735 [2024-11-10 18:24:31,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67d8b460f/05c2e0424ccb407f9f8200f89f24792d [2024-11-10 18:24:31,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:24:31,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:24:31,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:31,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:24:31,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:24:31,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:31" (1/1) ... [2024-11-10 18:24:31,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f554721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:31, skipping insertion in model container [2024-11-10 18:24:31,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:31" (1/1) ... [2024-11-10 18:24:31,797 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:24:32,226 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 18:24:32,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:32,241 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:24:32,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:32,296 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:24:32,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32 WrapperNode [2024-11-10 18:24:32,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:32,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:32,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:24:32,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:24:32,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,351 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 196 [2024-11-10 18:24:32,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:32,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:24:32,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:24:32,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:24:32,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,392 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 18:24:32,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,398 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:24:32,404 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:24:32,405 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:24:32,405 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:24:32,405 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (1/1) ... [2024-11-10 18:24:32,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:32,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:32,438 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 18:24:32,463 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 18:24:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:24:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:24:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:24:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:24:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:24:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:24:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:24:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:24:32,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:24:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:24:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:24:32,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:24:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:24:32,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:24:32,513 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 18:24:32,662 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:24:32,664 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:24:33,122 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:24:33,124 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:24:33,328 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:24:33,329 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:24:33,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:33 BoogieIcfgContainer [2024-11-10 18:24:33,330 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:24:33,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:24:33,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:24:33,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:24:33,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:24:31" (1/3) ... [2024-11-10 18:24:33,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501ed6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:33, skipping insertion in model container [2024-11-10 18:24:33,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:32" (2/3) ... [2024-11-10 18:24:33,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501ed6c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:33, skipping insertion in model container [2024-11-10 18:24:33,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:33" (3/3) ... [2024-11-10 18:24:33,339 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2024-11-10 18:24:33,356 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:24:33,357 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-10 18:24:33,357 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:24:33,432 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:24:33,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 72 transitions, 158 flow [2024-11-10 18:24:33,549 INFO L124 PetriNetUnfolderBase]: 10/70 cut-off events. [2024-11-10 18:24:33,550 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:24:33,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 70 events. 10/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 186 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-10 18:24:33,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 72 transitions, 158 flow [2024-11-10 18:24:33,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 69 transitions, 150 flow [2024-11-10 18:24:33,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:24:33,571 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;@1f2934a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:24:33,572 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-10 18:24:33,576 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:24:33,576 INFO L124 PetriNetUnfolderBase]: 2/7 cut-off events. [2024-11-10 18:24:33,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:24:33,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:33,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:24:33,579 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:33,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash 18317161, now seen corresponding path program 1 times [2024-11-10 18:24:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:33,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162717745] [2024-11-10 18:24:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:33,849 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 18:24:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:33,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162717745] [2024-11-10 18:24:33,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162717745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:33,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:33,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:24:33,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820044508] [2024-11-10 18:24:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:33,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:33,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:33,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:33,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2024-11-10 18:24:33,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 18:24:33,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:33,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2024-11-10 18:24:33,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:34,139 INFO L124 PetriNetUnfolderBase]: 236/517 cut-off events. [2024-11-10 18:24:34,139 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-10 18:24:34,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 517 events. 236/517 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2901 event pairs, 146 based on Foata normal form. 41/471 useless extension candidates. Maximal degree in co-relation 792. Up to 361 conditions per place. [2024-11-10 18:24:34,150 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 29 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-10 18:24:34,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 200 flow [2024-11-10 18:24:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-11-10 18:24:34,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-10 18:24:34,166 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 150 flow. Second operand 3 states and 141 transitions. [2024-11-10 18:24:34,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 200 flow [2024-11-10 18:24:34,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:24:34,175 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 134 flow [2024-11-10 18:24:34,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-11-10 18:24:34,181 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -5 predicate places. [2024-11-10 18:24:34,182 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 134 flow [2024-11-10 18:24:34,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 18:24:34,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:34,183 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:24:34,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:24:34,184 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:34,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:34,185 INFO L85 PathProgramCache]: Analyzing trace with hash 18317162, now seen corresponding path program 1 times [2024-11-10 18:24:34,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:34,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997894407] [2024-11-10 18:24:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:34,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:34,531 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 18:24:34,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:34,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997894407] [2024-11-10 18:24:34,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997894407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:34,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:34,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:24:34,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599291439] [2024-11-10 18:24:34,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:34,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:24:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:24:34,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:24:34,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-11-10 18:24:34,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 18:24:34,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:34,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-11-10 18:24:34,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:34,774 INFO L124 PetriNetUnfolderBase]: 236/520 cut-off events. [2024-11-10 18:24:34,774 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 18:24:34,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 520 events. 236/520 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2904 event pairs, 146 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 874. Up to 366 conditions per place. [2024-11-10 18:24:34,779 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 33 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-11-10 18:24:34,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 208 flow [2024-11-10 18:24:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-10 18:24:34,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6435185185185185 [2024-11-10 18:24:34,782 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 134 flow. Second operand 3 states and 139 transitions. [2024-11-10 18:24:34,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 208 flow [2024-11-10 18:24:34,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:34,784 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 144 flow [2024-11-10 18:24:34,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-11-10 18:24:34,787 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -4 predicate places. [2024-11-10 18:24:34,787 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 144 flow [2024-11-10 18:24:34,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 18:24:34,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:34,788 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-10 18:24:34,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:24:34,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:34,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash 226288276, now seen corresponding path program 1 times [2024-11-10 18:24:34,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:34,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228392192] [2024-11-10 18:24:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:34,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:35,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228392192] [2024-11-10 18:24:35,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228392192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189918995] [2024-11-10 18:24:35,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:35,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:35,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:35,127 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 18:24:35,131 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 18:24:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:35,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 18:24:35,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:35,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-10 18:24:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:35,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:35,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189918995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:35,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:35,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-10 18:24:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692645511] [2024-11-10 18:24:35,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:35,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 18:24:35,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 18:24:35,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:24:35,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-11-10 18:24:35,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 144 flow. Second operand has 11 states, 11 states have (on average 35.36363636363637) internal successors, (389), 11 states have internal predecessors, (389), 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 18:24:35,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:35,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-11-10 18:24:35,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:36,160 INFO L124 PetriNetUnfolderBase]: 237/524 cut-off events. [2024-11-10 18:24:36,160 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-10 18:24:36,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 524 events. 237/524 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2906 event pairs, 146 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 896. Up to 362 conditions per place. [2024-11-10 18:24:36,166 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 30 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2024-11-10 18:24:36,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 230 flow [2024-11-10 18:24:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:24:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:24:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 278 transitions. [2024-11-10 18:24:36,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515873015873016 [2024-11-10 18:24:36,172 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 144 flow. Second operand 7 states and 278 transitions. [2024-11-10 18:24:36,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 230 flow [2024-11-10 18:24:36,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:36,175 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 166 flow [2024-11-10 18:24:36,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2024-11-10 18:24:36,177 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2024-11-10 18:24:36,178 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 166 flow [2024-11-10 18:24:36,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.36363636363637) internal successors, (389), 11 states have internal predecessors, (389), 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 18:24:36,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:36,178 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:36,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:36,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:36,379 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:36,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1613769935, now seen corresponding path program 1 times [2024-11-10 18:24:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115192279] [2024-11-10 18:24:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:36,458 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 18:24:36,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:36,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115192279] [2024-11-10 18:24:36,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115192279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:36,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:36,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:24:36,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631392999] [2024-11-10 18:24:36,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:36,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:24:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:24:36,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:24:36,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 72 [2024-11-10 18:24:36,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 18:24:36,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:36,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 72 [2024-11-10 18:24:36,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:36,592 INFO L124 PetriNetUnfolderBase]: 237/469 cut-off events. [2024-11-10 18:24:36,592 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-10 18:24:36,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 469 events. 237/469 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2296 event pairs, 146 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 822. Up to 361 conditions per place. [2024-11-10 18:24:36,596 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 33 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-11-10 18:24:36,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 218 flow [2024-11-10 18:24:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:24:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:24:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-10 18:24:36,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-10 18:24:36,598 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 166 flow. Second operand 4 states and 141 transitions. [2024-11-10 18:24:36,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 218 flow [2024-11-10 18:24:36,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 209 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:36,600 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 143 flow [2024-11-10 18:24:36,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-11-10 18:24:36,601 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-11-10 18:24:36,601 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 143 flow [2024-11-10 18:24:36,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 18:24:36,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:36,601 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:36,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:24:36,602 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:36,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1613769936, now seen corresponding path program 1 times [2024-11-10 18:24:36,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:36,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758743617] [2024-11-10 18:24:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:36,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758743617] [2024-11-10 18:24:36,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758743617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091880467] [2024-11-10 18:24:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:36,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:36,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:36,768 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 18:24:36,769 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 18:24:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:36,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:24:36,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:36,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:37,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-10 18:24:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091880467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:37,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:37,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-10 18:24:37,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876239622] [2024-11-10 18:24:37,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:37,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 18:24:37,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:37,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 18:24:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-10 18:24:37,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 72 [2024-11-10 18:24:37,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 143 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 18:24:37,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:37,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 72 [2024-11-10 18:24:37,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:37,647 INFO L124 PetriNetUnfolderBase]: 501/947 cut-off events. [2024-11-10 18:24:37,647 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-10 18:24:37,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 947 events. 501/947 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5433 event pairs, 158 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 1710. Up to 437 conditions per place. [2024-11-10 18:24:37,656 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 57 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2024-11-10 18:24:37,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 320 flow [2024-11-10 18:24:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2024-11-10 18:24:37,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-10 18:24:37,658 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 143 flow. Second operand 5 states and 235 transitions. [2024-11-10 18:24:37,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 320 flow [2024-11-10 18:24:37,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:37,662 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 158 flow [2024-11-10 18:24:37,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2024-11-10 18:24:37,663 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-11-10 18:24:37,664 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 158 flow [2024-11-10 18:24:37,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 18:24:37,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:37,665 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:37,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:24:37,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:37,870 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:37,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:37,871 INFO L85 PathProgramCache]: Analyzing trace with hash -233779494, now seen corresponding path program 1 times [2024-11-10 18:24:37,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:37,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949101399] [2024-11-10 18:24:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:37,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:38,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:38,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949101399] [2024-11-10 18:24:38,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949101399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:38,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967000551] [2024-11-10 18:24:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:38,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:38,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:38,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:38,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:24:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:38,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:24:38,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:38,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:38,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-10 18:24:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967000551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:38,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:38,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-10 18:24:38,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190883755] [2024-11-10 18:24:38,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:38,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 18:24:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:38,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 18:24:38,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-10 18:24:39,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 72 [2024-11-10 18:24:39,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 158 flow. Second operand has 12 states, 12 states have (on average 29.583333333333332) internal successors, (355), 12 states have internal predecessors, (355), 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 18:24:39,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:39,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 72 [2024-11-10 18:24:39,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:39,601 INFO L124 PetriNetUnfolderBase]: 881/1543 cut-off events. [2024-11-10 18:24:39,602 INFO L125 PetriNetUnfolderBase]: For 176/222 co-relation queries the response was YES. [2024-11-10 18:24:39,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 1543 events. 881/1543 cut-off events. For 176/222 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8965 event pairs, 165 based on Foata normal form. 0/1343 useless extension candidates. Maximal degree in co-relation 3106. Up to 1021 conditions per place. [2024-11-10 18:24:39,612 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 57 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-11-10 18:24:39,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 78 transitions, 337 flow [2024-11-10 18:24:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:39,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 201 transitions. [2024-11-10 18:24:39,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-11-10 18:24:39,614 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 158 flow. Second operand 5 states and 201 transitions. [2024-11-10 18:24:39,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 78 transitions, 337 flow [2024-11-10 18:24:39,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 78 transitions, 329 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:39,616 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 206 flow [2024-11-10 18:24:39,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2024-11-10 18:24:39,617 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -4 predicate places. [2024-11-10 18:24:39,618 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 206 flow [2024-11-10 18:24:39,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.583333333333332) internal successors, (355), 12 states have internal predecessors, (355), 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 18:24:39,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:39,618 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:39,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:24:39,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:39,823 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:39,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:39,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2043131295, now seen corresponding path program 1 times [2024-11-10 18:24:39,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:39,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083971344] [2024-11-10 18:24:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:39,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:40,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:40,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083971344] [2024-11-10 18:24:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083971344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:40,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576383856] [2024-11-10 18:24:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:40,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:40,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:40,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:40,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:24:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:40,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:24:40,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:40,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:40,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-10 18:24:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:40,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576383856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:40,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:40,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2024-11-10 18:24:40,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628915243] [2024-11-10 18:24:40,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:40,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 18:24:40,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:40,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 18:24:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-10 18:24:42,235 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 72 [2024-11-10 18:24:42,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 206 flow. Second operand has 19 states, 19 states have (on average 35.73684210526316) internal successors, (679), 19 states have internal predecessors, (679), 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 18:24:42,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:42,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 72 [2024-11-10 18:24:42,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:43,084 INFO L124 PetriNetUnfolderBase]: 1317/2483 cut-off events. [2024-11-10 18:24:43,085 INFO L125 PetriNetUnfolderBase]: For 257/292 co-relation queries the response was YES. [2024-11-10 18:24:43,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5323 conditions, 2483 events. 1317/2483 cut-off events. For 257/292 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16691 event pairs, 414 based on Foata normal form. 0/2401 useless extension candidates. Maximal degree in co-relation 2671. Up to 745 conditions per place. [2024-11-10 18:24:43,099 INFO L140 encePairwiseOnDemand]: 59/72 looper letters, 146 selfloop transitions, 21 changer transitions 0/186 dead transitions. [2024-11-10 18:24:43,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 186 transitions, 901 flow [2024-11-10 18:24:43,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 18:24:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 18:24:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 584 transitions. [2024-11-10 18:24:43,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6239316239316239 [2024-11-10 18:24:43,102 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 206 flow. Second operand 13 states and 584 transitions. [2024-11-10 18:24:43,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 186 transitions, 901 flow [2024-11-10 18:24:43,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 186 transitions, 870 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:43,106 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 283 flow [2024-11-10 18:24:43,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=283, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2024-11-10 18:24:43,106 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2024-11-10 18:24:43,107 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 283 flow [2024-11-10 18:24:43,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 35.73684210526316) internal successors, (679), 19 states have internal predecessors, (679), 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 18:24:43,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:43,107 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:43,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 18:24:43,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:43,312 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:43,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1342770924, now seen corresponding path program 1 times [2024-11-10 18:24:43,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:43,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330388096] [2024-11-10 18:24:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:43,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:43,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330388096] [2024-11-10 18:24:43,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330388096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:43,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997247322] [2024-11-10 18:24:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:43,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:43,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:43,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:43,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 18:24:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:43,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:24:43,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:43,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:43,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-10 18:24:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997247322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:43,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:43,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-10 18:24:43,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899705161] [2024-11-10 18:24:43,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:43,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 18:24:43,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 18:24:43,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-10 18:24:44,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2024-11-10 18:24:44,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 283 flow. Second operand has 17 states, 17 states have (on average 28.11764705882353) internal successors, (478), 17 states have internal predecessors, (478), 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 18:24:44,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:44,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2024-11-10 18:24:44,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:45,179 INFO L124 PetriNetUnfolderBase]: 1359/2368 cut-off events. [2024-11-10 18:24:45,179 INFO L125 PetriNetUnfolderBase]: For 1105/1105 co-relation queries the response was YES. [2024-11-10 18:24:45,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5853 conditions, 2368 events. 1359/2368 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 14577 event pairs, 246 based on Foata normal form. 0/2258 useless extension candidates. Maximal degree in co-relation 3097. Up to 913 conditions per place. [2024-11-10 18:24:45,193 INFO L140 encePairwiseOnDemand]: 48/72 looper letters, 64 selfloop transitions, 37 changer transitions 0/111 dead transitions. [2024-11-10 18:24:45,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 111 transitions, 621 flow [2024-11-10 18:24:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 18:24:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 18:24:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 376 transitions. [2024-11-10 18:24:45,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-11-10 18:24:45,195 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 283 flow. Second operand 11 states and 376 transitions. [2024-11-10 18:24:45,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 111 transitions, 621 flow [2024-11-10 18:24:45,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 588 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-10 18:24:45,199 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 348 flow [2024-11-10 18:24:45,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=348, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2024-11-10 18:24:45,200 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-11-10 18:24:45,200 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 348 flow [2024-11-10 18:24:45,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 28.11764705882353) internal successors, (478), 17 states have internal predecessors, (478), 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 18:24:45,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:45,200 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] [2024-11-10 18:24:45,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 18:24:45,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:45,402 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:45,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:45,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1759577198, now seen corresponding path program 1 times [2024-11-10 18:24:45,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:45,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634072764] [2024-11-10 18:24:45,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:45,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:45,449 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 18:24:45,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:45,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634072764] [2024-11-10 18:24:45,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634072764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:45,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:45,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:24:45,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281490522] [2024-11-10 18:24:45,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:45,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:45,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:45,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 72 [2024-11-10 18:24:45,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 18:24:45,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:45,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 72 [2024-11-10 18:24:45,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:45,724 INFO L124 PetriNetUnfolderBase]: 1406/2437 cut-off events. [2024-11-10 18:24:45,725 INFO L125 PetriNetUnfolderBase]: For 1414/1414 co-relation queries the response was YES. [2024-11-10 18:24:45,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 2437 events. 1406/2437 cut-off events. For 1414/1414 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15072 event pairs, 379 based on Foata normal form. 2/2334 useless extension candidates. Maximal degree in co-relation 3328. Up to 1787 conditions per place. [2024-11-10 18:24:45,739 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 81 selfloop transitions, 12 changer transitions 1/106 dead transitions. [2024-11-10 18:24:45,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 685 flow [2024-11-10 18:24:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-11-10 18:24:45,741 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7453703703703703 [2024-11-10 18:24:45,741 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 348 flow. Second operand 3 states and 161 transitions. [2024-11-10 18:24:45,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 685 flow [2024-11-10 18:24:45,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 106 transitions, 651 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-10 18:24:45,746 INFO L231 Difference]: Finished difference. Result has 65 places, 85 transitions, 446 flow [2024-11-10 18:24:45,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=65, PETRI_TRANSITIONS=85} [2024-11-10 18:24:45,746 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-11-10 18:24:45,747 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 85 transitions, 446 flow [2024-11-10 18:24:45,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 18:24:45,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:45,747 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] [2024-11-10 18:24:45,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 18:24:45,748 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:45,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1298799748, now seen corresponding path program 1 times [2024-11-10 18:24:45,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:45,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629846531] [2024-11-10 18:24:45,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:45,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:45,974 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 18:24:45,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:45,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629846531] [2024-11-10 18:24:45,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629846531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:45,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:45,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:24:45,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809961659] [2024-11-10 18:24:45,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:45,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:24:45,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:45,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:24:45,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:24:46,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 72 [2024-11-10 18:24:46,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 85 transitions, 446 flow. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 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 18:24:46,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:46,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 72 [2024-11-10 18:24:46,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:46,688 INFO L124 PetriNetUnfolderBase]: 1991/3384 cut-off events. [2024-11-10 18:24:46,688 INFO L125 PetriNetUnfolderBase]: For 1212/1212 co-relation queries the response was YES. [2024-11-10 18:24:46,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8645 conditions, 3384 events. 1991/3384 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19579 event pairs, 515 based on Foata normal form. 96/3476 useless extension candidates. Maximal degree in co-relation 4582. Up to 1170 conditions per place. [2024-11-10 18:24:46,716 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 176 selfloop transitions, 37 changer transitions 0/219 dead transitions. [2024-11-10 18:24:46,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 219 transitions, 1285 flow [2024-11-10 18:24:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 18:24:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 18:24:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 532 transitions. [2024-11-10 18:24:46,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2024-11-10 18:24:46,719 INFO L175 Difference]: Start difference. First operand has 65 places, 85 transitions, 446 flow. Second operand 12 states and 532 transitions. [2024-11-10 18:24:46,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 219 transitions, 1285 flow [2024-11-10 18:24:46,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 219 transitions, 1239 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:46,734 INFO L231 Difference]: Finished difference. Result has 83 places, 92 transitions, 560 flow [2024-11-10 18:24:46,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=560, PETRI_PLACES=83, PETRI_TRANSITIONS=92} [2024-11-10 18:24:46,736 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-10 18:24:46,737 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 92 transitions, 560 flow [2024-11-10 18:24:46,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 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 18:24:46,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:46,737 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] [2024-11-10 18:24:46,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 18:24:46,738 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:46,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1745061560, now seen corresponding path program 1 times [2024-11-10 18:24:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708721646] [2024-11-10 18:24:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:46,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:46,929 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 18:24:46,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:46,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708721646] [2024-11-10 18:24:46,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708721646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:46,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:46,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:24:46,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064727272] [2024-11-10 18:24:46,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:46,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:24:46,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:46,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:24:46,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:46,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 72 [2024-11-10 18:24:47,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 92 transitions, 560 flow. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 18:24:47,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:47,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 72 [2024-11-10 18:24:47,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:47,560 INFO L124 PetriNetUnfolderBase]: 1913/3313 cut-off events. [2024-11-10 18:24:47,560 INFO L125 PetriNetUnfolderBase]: For 4296/4296 co-relation queries the response was YES. [2024-11-10 18:24:47,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9966 conditions, 3313 events. 1913/3313 cut-off events. For 4296/4296 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19649 event pairs, 779 based on Foata normal form. 10/3319 useless extension candidates. Maximal degree in co-relation 6889. Up to 1712 conditions per place. [2024-11-10 18:24:47,600 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 127 selfloop transitions, 22 changer transitions 0/157 dead transitions. [2024-11-10 18:24:47,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 157 transitions, 1149 flow [2024-11-10 18:24:47,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2024-11-10 18:24:47,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-10 18:24:47,602 INFO L175 Difference]: Start difference. First operand has 83 places, 92 transitions, 560 flow. Second operand 5 states and 252 transitions. [2024-11-10 18:24:47,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 157 transitions, 1149 flow [2024-11-10 18:24:47,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 157 transitions, 1116 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:47,623 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 620 flow [2024-11-10 18:24:47,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=620, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2024-11-10 18:24:47,626 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-11-10 18:24:47,626 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 620 flow [2024-11-10 18:24:47,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 18:24:47,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:47,627 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] [2024-11-10 18:24:47,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 18:24:47,628 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:47,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:47,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1748759930, now seen corresponding path program 2 times [2024-11-10 18:24:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:47,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173906004] [2024-11-10 18:24:47,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:47,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:47,797 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 18:24:47,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:47,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173906004] [2024-11-10 18:24:47,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173906004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:47,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:47,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:24:47,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773680801] [2024-11-10 18:24:47,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:47,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:24:47,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:47,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:24:47,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:47,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 72 [2024-11-10 18:24:47,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 620 flow. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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 18:24:47,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:47,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 72 [2024-11-10 18:24:47,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:48,245 INFO L124 PetriNetUnfolderBase]: 2095/3563 cut-off events. [2024-11-10 18:24:48,245 INFO L125 PetriNetUnfolderBase]: For 6484/6484 co-relation queries the response was YES. [2024-11-10 18:24:48,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11781 conditions, 3563 events. 2095/3563 cut-off events. For 6484/6484 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 20922 event pairs, 863 based on Foata normal form. 10/3569 useless extension candidates. Maximal degree in co-relation 11091. Up to 1882 conditions per place. [2024-11-10 18:24:48,279 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 119 selfloop transitions, 29 changer transitions 0/154 dead transitions. [2024-11-10 18:24:48,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 154 transitions, 1225 flow [2024-11-10 18:24:48,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2024-11-10 18:24:48,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-10 18:24:48,280 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 620 flow. Second operand 5 states and 235 transitions. [2024-11-10 18:24:48,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 154 transitions, 1225 flow [2024-11-10 18:24:48,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 154 transitions, 1202 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:48,303 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 782 flow [2024-11-10 18:24:48,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=782, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-11-10 18:24:48,305 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 26 predicate places. [2024-11-10 18:24:48,306 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 782 flow [2024-11-10 18:24:48,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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 18:24:48,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:48,306 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] [2024-11-10 18:24:48,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 18:24:48,306 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:48,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:48,307 INFO L85 PathProgramCache]: Analyzing trace with hash 743680960, now seen corresponding path program 3 times [2024-11-10 18:24:48,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:48,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284462328] [2024-11-10 18:24:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:48,457 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 18:24:48,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:48,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284462328] [2024-11-10 18:24:48,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284462328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:48,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:48,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 18:24:48,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638198754] [2024-11-10 18:24:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:48,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:48,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:24:48,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 72 [2024-11-10 18:24:48,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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 18:24:48,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:48,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 72 [2024-11-10 18:24:48,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:48,847 INFO L124 PetriNetUnfolderBase]: 1753/3026 cut-off events. [2024-11-10 18:24:48,847 INFO L125 PetriNetUnfolderBase]: For 4964/5020 co-relation queries the response was YES. [2024-11-10 18:24:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9828 conditions, 3026 events. 1753/3026 cut-off events. For 4964/5020 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17858 event pairs, 795 based on Foata normal form. 68/3066 useless extension candidates. Maximal degree in co-relation 9212. Up to 2000 conditions per place. [2024-11-10 18:24:48,873 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 111 selfloop transitions, 25 changer transitions 0/147 dead transitions. [2024-11-10 18:24:48,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 147 transitions, 1249 flow [2024-11-10 18:24:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2024-11-10 18:24:48,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-10 18:24:48,875 INFO L175 Difference]: Start difference. First operand has 92 places, 103 transitions, 782 flow. Second operand 6 states and 255 transitions. [2024-11-10 18:24:48,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 147 transitions, 1249 flow [2024-11-10 18:24:48,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 147 transitions, 1220 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:48,896 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 833 flow [2024-11-10 18:24:48,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=833, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2024-11-10 18:24:48,897 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2024-11-10 18:24:48,897 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 833 flow [2024-11-10 18:24:48,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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 18:24:48,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:48,897 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] [2024-11-10 18:24:48,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 18:24:48,898 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:48,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1434703868, now seen corresponding path program 1 times [2024-11-10 18:24:48,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:48,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063063649] [2024-11-10 18:24:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:48,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:49,059 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 18:24:49,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:49,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063063649] [2024-11-10 18:24:49,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063063649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:49,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:49,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 18:24:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429696556] [2024-11-10 18:24:49,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:49,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:49,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:24:49,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 72 [2024-11-10 18:24:49,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 833 flow. Second operand has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 18:24:49,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:49,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 72 [2024-11-10 18:24:49,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:49,578 INFO L124 PetriNetUnfolderBase]: 2171/3713 cut-off events. [2024-11-10 18:24:49,578 INFO L125 PetriNetUnfolderBase]: For 8416/8432 co-relation queries the response was YES. [2024-11-10 18:24:49,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12956 conditions, 3713 events. 2171/3713 cut-off events. For 8416/8432 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22219 event pairs, 873 based on Foata normal form. 40/3749 useless extension candidates. Maximal degree in co-relation 12239. Up to 1892 conditions per place. [2024-11-10 18:24:49,607 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 131 selfloop transitions, 33 changer transitions 0/170 dead transitions. [2024-11-10 18:24:49,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 170 transitions, 1472 flow [2024-11-10 18:24:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 274 transitions. [2024-11-10 18:24:49,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6342592592592593 [2024-11-10 18:24:49,609 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 833 flow. Second operand 6 states and 274 transitions. [2024-11-10 18:24:49,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 170 transitions, 1472 flow [2024-11-10 18:24:49,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 170 transitions, 1427 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:24:49,716 INFO L231 Difference]: Finished difference. Result has 101 places, 109 transitions, 929 flow [2024-11-10 18:24:49,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=929, PETRI_PLACES=101, PETRI_TRANSITIONS=109} [2024-11-10 18:24:49,718 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 35 predicate places. [2024-11-10 18:24:49,718 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 109 transitions, 929 flow [2024-11-10 18:24:49,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 18:24:49,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:49,718 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] [2024-11-10 18:24:49,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 18:24:49,719 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:49,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:49,719 INFO L85 PathProgramCache]: Analyzing trace with hash 103835298, now seen corresponding path program 2 times [2024-11-10 18:24:49,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:49,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973427400] [2024-11-10 18:24:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:49,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:49,929 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 18:24:49,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:49,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973427400] [2024-11-10 18:24:49,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973427400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:49,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:49,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 18:24:49,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599848229] [2024-11-10 18:24:49,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:49,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:49,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:24:49,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 72 [2024-11-10 18:24:49,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 109 transitions, 929 flow. Second operand has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 18:24:49,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:49,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 72 [2024-11-10 18:24:49,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:50,435 INFO L124 PetriNetUnfolderBase]: 2351/4008 cut-off events. [2024-11-10 18:24:50,436 INFO L125 PetriNetUnfolderBase]: For 10200/10200 co-relation queries the response was YES. [2024-11-10 18:24:50,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14298 conditions, 4008 events. 2351/4008 cut-off events. For 10200/10200 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 24263 event pairs, 1215 based on Foata normal form. 24/4028 useless extension candidates. Maximal degree in co-relation 13268. Up to 3012 conditions per place. [2024-11-10 18:24:50,463 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 125 selfloop transitions, 34 changer transitions 0/165 dead transitions. [2024-11-10 18:24:50,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 165 transitions, 1543 flow [2024-11-10 18:24:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2024-11-10 18:24:50,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6087962962962963 [2024-11-10 18:24:50,466 INFO L175 Difference]: Start difference. First operand has 101 places, 109 transitions, 929 flow. Second operand 6 states and 263 transitions. [2024-11-10 18:24:50,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 165 transitions, 1543 flow [2024-11-10 18:24:50,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 165 transitions, 1474 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:50,498 INFO L231 Difference]: Finished difference. Result has 105 places, 117 transitions, 1052 flow [2024-11-10 18:24:50,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1052, PETRI_PLACES=105, PETRI_TRANSITIONS=117} [2024-11-10 18:24:50,498 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 39 predicate places. [2024-11-10 18:24:50,498 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 117 transitions, 1052 flow [2024-11-10 18:24:50,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 18:24:50,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:50,499 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] [2024-11-10 18:24:50,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 18:24:50,499 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:50,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash 807585672, now seen corresponding path program 3 times [2024-11-10 18:24:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:50,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594255989] [2024-11-10 18:24:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:50,679 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 18:24:50,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:50,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594255989] [2024-11-10 18:24:50,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594255989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:50,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:50,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 18:24:50,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030652119] [2024-11-10 18:24:50,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:50,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:50,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:50,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:50,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:24:50,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 72 [2024-11-10 18:24:50,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 117 transitions, 1052 flow. Second operand has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 18:24:50,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:50,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 72 [2024-11-10 18:24:50,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:51,312 INFO L124 PetriNetUnfolderBase]: 2447/4172 cut-off events. [2024-11-10 18:24:51,312 INFO L125 PetriNetUnfolderBase]: For 10764/10780 co-relation queries the response was YES. [2024-11-10 18:24:51,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14841 conditions, 4172 events. 2447/4172 cut-off events. For 10764/10780 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 25525 event pairs, 1369 based on Foata normal form. 28/4192 useless extension candidates. Maximal degree in co-relation 13780. Up to 3346 conditions per place. [2024-11-10 18:24:51,347 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 124 selfloop transitions, 31 changer transitions 0/161 dead transitions. [2024-11-10 18:24:51,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 161 transitions, 1576 flow [2024-11-10 18:24:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 253 transitions. [2024-11-10 18:24:51,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5856481481481481 [2024-11-10 18:24:51,349 INFO L175 Difference]: Start difference. First operand has 105 places, 117 transitions, 1052 flow. Second operand 6 states and 253 transitions. [2024-11-10 18:24:51,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 161 transitions, 1576 flow [2024-11-10 18:24:51,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 161 transitions, 1502 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-10 18:24:51,388 INFO L231 Difference]: Finished difference. Result has 106 places, 121 transitions, 1108 flow [2024-11-10 18:24:51,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1108, PETRI_PLACES=106, PETRI_TRANSITIONS=121} [2024-11-10 18:24:51,389 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 40 predicate places. [2024-11-10 18:24:51,389 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 121 transitions, 1108 flow [2024-11-10 18:24:51,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 18:24:51,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:51,390 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] [2024-11-10 18:24:51,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 18:24:51,390 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:51,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:51,390 INFO L85 PathProgramCache]: Analyzing trace with hash 52597226, now seen corresponding path program 4 times [2024-11-10 18:24:51,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:51,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25412946] [2024-11-10 18:24:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:51,495 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 18:24:51,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:51,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25412946] [2024-11-10 18:24:51,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25412946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:51,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:51,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:24:51,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772333946] [2024-11-10 18:24:51,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:51,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:24:51,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:24:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:51,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 72 [2024-11-10 18:24:51,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 121 transitions, 1108 flow. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 18:24:51,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:51,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 72 [2024-11-10 18:24:51,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:51,960 INFO L124 PetriNetUnfolderBase]: 2337/3952 cut-off events. [2024-11-10 18:24:51,961 INFO L125 PetriNetUnfolderBase]: For 10265/10281 co-relation queries the response was YES. [2024-11-10 18:24:51,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14157 conditions, 3952 events. 2337/3952 cut-off events. For 10265/10281 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 23631 event pairs, 1333 based on Foata normal form. 26/3974 useless extension candidates. Maximal degree in co-relation 12892. Up to 3308 conditions per place. [2024-11-10 18:24:51,997 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 112 selfloop transitions, 29 changer transitions 0/147 dead transitions. [2024-11-10 18:24:51,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 147 transitions, 1492 flow [2024-11-10 18:24:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-11-10 18:24:51,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-11-10 18:24:51,999 INFO L175 Difference]: Start difference. First operand has 106 places, 121 transitions, 1108 flow. Second operand 5 states and 214 transitions. [2024-11-10 18:24:51,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 147 transitions, 1492 flow [2024-11-10 18:24:52,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 147 transitions, 1412 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 18:24:52,034 INFO L231 Difference]: Finished difference. Result has 106 places, 120 transitions, 1076 flow [2024-11-10 18:24:52,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1076, PETRI_PLACES=106, PETRI_TRANSITIONS=120} [2024-11-10 18:24:52,035 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 40 predicate places. [2024-11-10 18:24:52,035 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 120 transitions, 1076 flow [2024-11-10 18:24:52,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 18:24:52,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:52,036 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] [2024-11-10 18:24:52,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 18:24:52,036 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:52,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:52,037 INFO L85 PathProgramCache]: Analyzing trace with hash -135514602, now seen corresponding path program 5 times [2024-11-10 18:24:52,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:52,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980865208] [2024-11-10 18:24:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:52,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:52,187 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 18:24:52,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:52,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980865208] [2024-11-10 18:24:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980865208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:52,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:52,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 18:24:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077446231] [2024-11-10 18:24:52,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:52,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:52,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:52,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:52,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:24:52,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 72 [2024-11-10 18:24:52,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 1076 flow. Second operand has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 18:24:52,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:52,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 72 [2024-11-10 18:24:52,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:52,734 INFO L124 PetriNetUnfolderBase]: 2303/3916 cut-off events. [2024-11-10 18:24:52,735 INFO L125 PetriNetUnfolderBase]: For 9599/9615 co-relation queries the response was YES. [2024-11-10 18:24:52,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13731 conditions, 3916 events. 2303/3916 cut-off events. For 9599/9615 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 23457 event pairs, 965 based on Foata normal form. 28/3936 useless extension candidates. Maximal degree in co-relation 13050. Up to 2142 conditions per place. [2024-11-10 18:24:52,766 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 134 selfloop transitions, 36 changer transitions 0/176 dead transitions. [2024-11-10 18:24:52,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 176 transitions, 1623 flow [2024-11-10 18:24:52,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:24:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:24:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2024-11-10 18:24:52,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-10 18:24:52,769 INFO L175 Difference]: Start difference. First operand has 106 places, 120 transitions, 1076 flow. Second operand 7 states and 300 transitions. [2024-11-10 18:24:52,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 176 transitions, 1623 flow [2024-11-10 18:24:52,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 176 transitions, 1545 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-10 18:24:52,801 INFO L231 Difference]: Finished difference. Result has 106 places, 119 transitions, 1051 flow [2024-11-10 18:24:52,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1051, PETRI_PLACES=106, PETRI_TRANSITIONS=119} [2024-11-10 18:24:52,803 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 40 predicate places. [2024-11-10 18:24:52,803 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 119 transitions, 1051 flow [2024-11-10 18:24:52,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 18:24:52,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:52,803 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] [2024-11-10 18:24:52,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 18:24:52,804 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:52,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:52,804 INFO L85 PathProgramCache]: Analyzing trace with hash -191723183, now seen corresponding path program 1 times [2024-11-10 18:24:52,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:52,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687211406] [2024-11-10 18:24:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:52,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:52,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:52,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687211406] [2024-11-10 18:24:52,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687211406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:52,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284910745] [2024-11-10 18:24:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:52,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:52,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:52,995 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:53,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 18:24:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:53,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-10 18:24:53,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:53,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 18:24:53,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 18:24:53,237 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 18:24:53,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:53,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-10 18:24:53,598 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 18:24:53,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-10 18:24:53,666 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 18:24:53,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284910745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:53,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:53,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 19 [2024-11-10 18:24:53,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476757384] [2024-11-10 18:24:53,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:53,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 18:24:53,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:53,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 18:24:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-10 18:24:54,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 72 [2024-11-10 18:24:54,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 119 transitions, 1051 flow. Second operand has 19 states, 19 states have (on average 35.05263157894737) internal successors, (666), 19 states have internal predecessors, (666), 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 18:24:54,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:54,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 72 [2024-11-10 18:24:54,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:57,784 INFO L124 PetriNetUnfolderBase]: 3994/6995 cut-off events. [2024-11-10 18:24:57,785 INFO L125 PetriNetUnfolderBase]: For 14365/14373 co-relation queries the response was YES. [2024-11-10 18:24:57,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22691 conditions, 6995 events. 3994/6995 cut-off events. For 14365/14373 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 45798 event pairs, 418 based on Foata normal form. 67/7050 useless extension candidates. Maximal degree in co-relation 21669. Up to 1135 conditions per place. [2024-11-10 18:24:57,860 INFO L140 encePairwiseOnDemand]: 48/72 looper letters, 271 selfloop transitions, 123 changer transitions 245/645 dead transitions. [2024-11-10 18:24:57,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 645 transitions, 5010 flow [2024-11-10 18:24:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-10 18:24:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-10 18:24:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1753 transitions. [2024-11-10 18:24:57,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6242877492877493 [2024-11-10 18:24:57,868 INFO L175 Difference]: Start difference. First operand has 106 places, 119 transitions, 1051 flow. Second operand 39 states and 1753 transitions. [2024-11-10 18:24:57,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 645 transitions, 5010 flow [2024-11-10 18:24:57,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 645 transitions, 4744 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-10 18:24:57,974 INFO L231 Difference]: Finished difference. Result has 169 places, 182 transitions, 1942 flow [2024-11-10 18:24:57,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1942, PETRI_PLACES=169, PETRI_TRANSITIONS=182} [2024-11-10 18:24:57,975 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 103 predicate places. [2024-11-10 18:24:57,975 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 182 transitions, 1942 flow [2024-11-10 18:24:57,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 35.05263157894737) internal successors, (666), 19 states have internal predecessors, (666), 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 18:24:57,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:57,979 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] [2024-11-10 18:24:58,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:58,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:58,180 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:24:58,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1357350569, now seen corresponding path program 2 times [2024-11-10 18:24:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555449773] [2024-11-10 18:24:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:58,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:58,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555449773] [2024-11-10 18:24:58,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555449773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:58,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:58,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 18:24:58,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886750734] [2024-11-10 18:24:58,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:58,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 18:24:58,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 18:24:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:25:02,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-10 18:25:06,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-10 18:25:06,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 72 [2024-11-10 18:25:06,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 182 transitions, 1942 flow. Second operand has 8 states, 8 states have (on average 33.25) internal successors, (266), 8 states have internal predecessors, (266), 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 18:25:06,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:25:06,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 72 [2024-11-10 18:25:06,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:25:07,869 INFO L124 PetriNetUnfolderBase]: 2786/4980 cut-off events. [2024-11-10 18:25:07,869 INFO L125 PetriNetUnfolderBase]: For 47066/47072 co-relation queries the response was YES. [2024-11-10 18:25:07,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24858 conditions, 4980 events. 2786/4980 cut-off events. For 47066/47072 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 30290 event pairs, 1307 based on Foata normal form. 48/5025 useless extension candidates. Maximal degree in co-relation 24715. Up to 3044 conditions per place. [2024-11-10 18:25:07,914 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 212 selfloop transitions, 59 changer transitions 8/285 dead transitions. [2024-11-10 18:25:07,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 285 transitions, 3503 flow [2024-11-10 18:25:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:25:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:25:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 383 transitions. [2024-11-10 18:25:07,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5910493827160493 [2024-11-10 18:25:07,916 INFO L175 Difference]: Start difference. First operand has 169 places, 182 transitions, 1942 flow. Second operand 9 states and 383 transitions. [2024-11-10 18:25:07,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 285 transitions, 3503 flow [2024-11-10 18:25:08,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 285 transitions, 3264 flow, removed 115 selfloop flow, removed 13 redundant places. [2024-11-10 18:25:08,116 INFO L231 Difference]: Finished difference. Result has 158 places, 198 transitions, 2218 flow [2024-11-10 18:25:08,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2218, PETRI_PLACES=158, PETRI_TRANSITIONS=198} [2024-11-10 18:25:08,117 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 92 predicate places. [2024-11-10 18:25:08,118 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 198 transitions, 2218 flow [2024-11-10 18:25:08,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.25) internal successors, (266), 8 states have internal predecessors, (266), 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 18:25:08,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:25:08,118 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] [2024-11-10 18:25:08,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 18:25:08,119 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:25:08,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:25:08,119 INFO L85 PathProgramCache]: Analyzing trace with hash 890475049, now seen corresponding path program 3 times [2024-11-10 18:25:08,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:25:08,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34539085] [2024-11-10 18:25:08,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:25:08,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:25:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:25:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:25:08,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:25:08,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34539085] [2024-11-10 18:25:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34539085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:25:08,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753060475] [2024-11-10 18:25:08,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:25:08,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:25:08,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:25:08,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:25:08,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 18:25:08,426 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:25:08,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:25:08,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 18:25:08,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:25:08,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 18:25:08,753 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 18:25:08,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:25:09,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2024-11-10 18:25:09,322 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-10 18:25:09,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 91 [2024-11-10 18:25:10,385 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 18:25:10,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753060475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:25:10,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:25:10,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 25 [2024-11-10 18:25:10,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299435332] [2024-11-10 18:25:10,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:25:10,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 18:25:10,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:25:10,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 18:25:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-11-10 18:25:11,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 72 [2024-11-10 18:25:11,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 198 transitions, 2218 flow. Second operand has 25 states, 25 states have (on average 32.24) internal successors, (806), 25 states have internal predecessors, (806), 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 18:25:11,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:25:11,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 72 [2024-11-10 18:25:11,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:25:14,432 INFO L124 PetriNetUnfolderBase]: 3547/6262 cut-off events. [2024-11-10 18:25:14,433 INFO L125 PetriNetUnfolderBase]: For 47192/47192 co-relation queries the response was YES. [2024-11-10 18:25:14,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29977 conditions, 6262 events. 3547/6262 cut-off events. For 47192/47192 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 39074 event pairs, 744 based on Foata normal form. 40/6300 useless extension candidates. Maximal degree in co-relation 28269. Up to 3512 conditions per place. [2024-11-10 18:25:14,513 INFO L140 encePairwiseOnDemand]: 50/72 looper letters, 197 selfloop transitions, 86 changer transitions 122/409 dead transitions. [2024-11-10 18:25:14,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 409 transitions, 4635 flow [2024-11-10 18:25:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 18:25:14,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-10 18:25:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1144 transitions. [2024-11-10 18:25:14,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-11-10 18:25:14,516 INFO L175 Difference]: Start difference. First operand has 158 places, 198 transitions, 2218 flow. Second operand 30 states and 1144 transitions. [2024-11-10 18:25:14,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 409 transitions, 4635 flow [2024-11-10 18:25:14,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 409 transitions, 4541 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-11-10 18:25:14,734 INFO L231 Difference]: Finished difference. Result has 192 places, 180 transitions, 2187 flow [2024-11-10 18:25:14,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2187, PETRI_PLACES=192, PETRI_TRANSITIONS=180} [2024-11-10 18:25:14,735 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 126 predicate places. [2024-11-10 18:25:14,735 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 180 transitions, 2187 flow [2024-11-10 18:25:14,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 32.24) internal successors, (806), 25 states have internal predecessors, (806), 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 18:25:14,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:25:14,736 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2024-11-10 18:25:14,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 18:25:14,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:25:14,940 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-10 18:25:14,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:25:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1988850305, now seen corresponding path program 4 times [2024-11-10 18:25:14,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:25:14,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117407478] [2024-11-10 18:25:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:25:14,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:25:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:25:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 18:25:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:25:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117407478] [2024-11-10 18:25:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117407478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:25:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423656000] [2024-11-10 18:25:15,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:25:15,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:25:15,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:25:15,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:25:15,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 18:25:15,419 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:25:15,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:25:15,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-10 18:25:15,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:25:15,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 18:25:15,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 18:25:15,885 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-10 18:25:15,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 40 [2024-11-10 18:25:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:25:15,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:25:16,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 230 [2024-11-10 18:25:16,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:25:16,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 11194 treesize of output 7674