./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/stack-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:18:56,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:18:56,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:18:56,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:18:56,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:18:56,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:18:56,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:18:56,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:18:56,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:18:56,388 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:18:56,388 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:18:56,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:18:56,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:18:56,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:18:56,389 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:18:56,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:18:56,390 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:18:56,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:18:56,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:18:56,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:18:56,391 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:18:56,391 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:18:56,392 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:18:56,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:18:56,392 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:18:56,392 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:18:56,393 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:18:56,393 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:18:56,393 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:18:56,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:18:56,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:18:56,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:18:56,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:18:56,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:18:56,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:18:56,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:18:56,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:18:56,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:18:56,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:18:56,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:18:56,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:18:56,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:18:56,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2024-11-22 21:18:56,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:18:56,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:18:56,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:18:56,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:18:56,611 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:18:56,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack-1.i [2024-11-22 21:18:57,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:18:58,088 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:18:58,092 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-1.i [2024-11-22 21:18:58,114 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd58576d3/33b37abb94724ac78ca4589d0720edf4/FLAGfdf4e942d [2024-11-22 21:18:58,127 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd58576d3/33b37abb94724ac78ca4589d0720edf4 [2024-11-22 21:18:58,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:18:58,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:18:58,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:18:58,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:18:58,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:18:58,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bce5156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58, skipping insertion in model container [2024-11-22 21:18:58,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:18:58,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:18:58,565 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:18:58,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:18:58,704 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:18:58,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58 WrapperNode [2024-11-22 21:18:58,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:18:58,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:18:58,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:18:58,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:18:58,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,751 INFO L138 Inliner]: procedures = 277, calls = 36, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 154 [2024-11-22 21:18:58,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:18:58,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:18:58,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:18:58,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:18:58,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,774 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 0, 1]. [2024-11-22 21:18:58,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:18:58,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:18:58,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:18:58,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:18:58,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (1/1) ... [2024-11-22 21:18:58,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:18:58,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:18:58,816 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) [2024-11-22 21:18:58,825 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 [2024-11-22 21:18:58,871 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-22 21:18:58,871 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-22 21:18:58,871 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-22 21:18:58,872 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-22 21:18:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 21:18:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:18:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:18:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 21:18:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:18:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:18:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 21:18:58,872 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 21:18:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:18:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:18:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:18:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 21:18:58,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:18:58,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:18:58,874 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:18:58,981 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:18:58,983 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:18:59,160 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:18:59,161 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:18:59,313 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:18:59,313 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:18:59,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:18:59 BoogieIcfgContainer [2024-11-22 21:18:59,314 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:18:59,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:18:59,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:18:59,318 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:18:59,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:18:58" (1/3) ... [2024-11-22 21:18:59,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43eae480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:18:59, skipping insertion in model container [2024-11-22 21:18:59,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:18:58" (2/3) ... [2024-11-22 21:18:59,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43eae480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:18:59, skipping insertion in model container [2024-11-22 21:18:59,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:18:59" (3/3) ... [2024-11-22 21:18:59,322 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2024-11-22 21:18:59,335 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:18:59,335 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-22 21:18:59,335 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:18:59,395 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:18:59,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 54 transitions, 122 flow [2024-11-22 21:18:59,472 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-11-22 21:18:59,473 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:18:59,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 9/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-11-22 21:18:59,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 54 transitions, 122 flow [2024-11-22 21:18:59,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 51 transitions, 114 flow [2024-11-22 21:18:59,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:18:59,490 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;@78d16e23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:18:59,490 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-22 21:18:59,495 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:18:59,496 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-22 21:18:59,496 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:18:59,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:18:59,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:18:59,501 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:18:59,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:18:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash 686360153, now seen corresponding path program 1 times [2024-11-22 21:18:59,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:18:59,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372602099] [2024-11-22 21:18:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:18:59,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:18:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:18:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:18:59,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:18:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372602099] [2024-11-22 21:18:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372602099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:18:59,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:18:59,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:18:59,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814237374] [2024-11-22 21:18:59,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:18:59,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:18:59,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:18:59,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:18:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:18:59,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:18:59,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-22 21:18:59,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:18:59,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:18:59,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:00,124 INFO L124 PetriNetUnfolderBase]: 459/866 cut-off events. [2024-11-22 21:19:00,125 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-22 21:19:00,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 866 events. 459/866 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4349 event pairs, 245 based on Foata normal form. 94/832 useless extension candidates. Maximal degree in co-relation 1560. Up to 520 conditions per place. [2024-11-22 21:19:00,132 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 43 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-11-22 21:19:00,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 225 flow [2024-11-22 21:19:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:19:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:19:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-22 21:19:00,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-22 21:19:00,147 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 114 flow. Second operand 4 states and 113 transitions. [2024-11-22 21:19:00,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 225 flow [2024-11-22 21:19:00,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 215 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:19:00,153 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 98 flow [2024-11-22 21:19:00,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-22 21:19:00,158 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-11-22 21:19:00,159 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 98 flow [2024-11-22 21:19:00,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-22 21:19:00,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:00,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:00,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:19:00,160 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:00,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:00,160 INFO L85 PathProgramCache]: Analyzing trace with hash 686360154, now seen corresponding path program 1 times [2024-11-22 21:19:00,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:00,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130958831] [2024-11-22 21:19:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:00,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130958831] [2024-11-22 21:19:00,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130958831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:00,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:00,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:00,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493202836] [2024-11-22 21:19:00,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:00,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:19:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:19:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:19:00,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:00,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:00,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:00,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:00,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:00,643 INFO L124 PetriNetUnfolderBase]: 574/1064 cut-off events. [2024-11-22 21:19:00,643 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-22 21:19:00,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 1064 events. 574/1064 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5069 event pairs, 179 based on Foata normal form. 9/926 useless extension candidates. Maximal degree in co-relation 695. Up to 755 conditions per place. [2024-11-22 21:19:00,649 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 59 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-22 21:19:00,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 293 flow [2024-11-22 21:19:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:19:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:19:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-22 21:19:00,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-11-22 21:19:00,651 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 98 flow. Second operand 5 states and 143 transitions. [2024-11-22 21:19:00,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 293 flow [2024-11-22 21:19:00,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:19:00,654 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 128 flow [2024-11-22 21:19:00,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-11-22 21:19:00,654 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-11-22 21:19:00,655 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 128 flow [2024-11-22 21:19:00,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:00,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:00,655 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:00,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:19:00,655 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:00,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash -423406336, now seen corresponding path program 1 times [2024-11-22 21:19:00,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:00,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488054597] [2024-11-22 21:19:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:00,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:00,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:00,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488054597] [2024-11-22 21:19:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488054597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:00,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:19:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625938949] [2024-11-22 21:19:00,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:00,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:19:00,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:00,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:19:00,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:19:00,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:00,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-22 21:19:00,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:00,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:00,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:00,893 INFO L124 PetriNetUnfolderBase]: 823/1511 cut-off events. [2024-11-22 21:19:00,894 INFO L125 PetriNetUnfolderBase]: For 263/266 co-relation queries the response was YES. [2024-11-22 21:19:00,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3206 conditions, 1511 events. 823/1511 cut-off events. For 263/266 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7773 event pairs, 363 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 1126. Up to 857 conditions per place. [2024-11-22 21:19:00,901 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-22 21:19:00,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 370 flow [2024-11-22 21:19:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:19:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:19:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-22 21:19:00,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-22 21:19:00,905 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 128 flow. Second operand 4 states and 135 transitions. [2024-11-22 21:19:00,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 370 flow [2024-11-22 21:19:00,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:00,908 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 159 flow [2024-11-22 21:19:00,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-22 21:19:00,910 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-11-22 21:19:00,911 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 159 flow [2024-11-22 21:19:00,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-22 21:19:00,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:00,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:00,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:19:00,912 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:00,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1635275436, now seen corresponding path program 1 times [2024-11-22 21:19:00,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:00,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262878103] [2024-11-22 21:19:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:00,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:00,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262878103] [2024-11-22 21:19:00,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262878103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:00,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:00,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:00,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227615156] [2024-11-22 21:19:00,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:00,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:00,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:19:00,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:00,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-22 21:19:00,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:00,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:00,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:01,148 INFO L124 PetriNetUnfolderBase]: 957/1715 cut-off events. [2024-11-22 21:19:01,149 INFO L125 PetriNetUnfolderBase]: For 546/548 co-relation queries the response was YES. [2024-11-22 21:19:01,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 1715 events. 957/1715 cut-off events. For 546/548 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8862 event pairs, 395 based on Foata normal form. 12/1574 useless extension candidates. Maximal degree in co-relation 1267. Up to 1191 conditions per place. [2024-11-22 21:19:01,157 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 55 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-22 21:19:01,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 328 flow [2024-11-22 21:19:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-22 21:19:01,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-11-22 21:19:01,160 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 159 flow. Second operand 3 states and 103 transitions. [2024-11-22 21:19:01,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 328 flow [2024-11-22 21:19:01,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:01,165 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 168 flow [2024-11-22 21:19:01,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-22 21:19:01,167 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-11-22 21:19:01,167 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 168 flow [2024-11-22 21:19:01,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-22 21:19:01,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:01,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:01,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:19:01,169 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:01,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash 907179489, now seen corresponding path program 1 times [2024-11-22 21:19:01,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:01,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609939785] [2024-11-22 21:19:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:01,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:01,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:01,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609939785] [2024-11-22 21:19:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609939785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:01,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:01,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665102463] [2024-11-22 21:19:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:01,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:01,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:01,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:19:01,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:01,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-22 21:19:01,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:01,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:01,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:01,393 INFO L124 PetriNetUnfolderBase]: 499/1033 cut-off events. [2024-11-22 21:19:01,393 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-11-22 21:19:01,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 1033 events. 499/1033 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4803 event pairs, 105 based on Foata normal form. 60/1021 useless extension candidates. Maximal degree in co-relation 918. Up to 634 conditions per place. [2024-11-22 21:19:01,400 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 45 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-22 21:19:01,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 300 flow [2024-11-22 21:19:01,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-22 21:19:01,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-11-22 21:19:01,402 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 168 flow. Second operand 3 states and 91 transitions. [2024-11-22 21:19:01,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 300 flow [2024-11-22 21:19:01,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 292 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:01,408 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 170 flow [2024-11-22 21:19:01,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-11-22 21:19:01,408 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-11-22 21:19:01,409 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 170 flow [2024-11-22 21:19:01,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-11-22 21:19:01,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:01,409 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:01,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:19:01,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:01,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash 704836300, now seen corresponding path program 1 times [2024-11-22 21:19:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:01,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133711219] [2024-11-22 21:19:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:01,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:01,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133711219] [2024-11-22 21:19:01,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133711219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:01,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425479995] [2024-11-22 21:19:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:01,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:01,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:01,693 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) [2024-11-22 21:19:01,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:19:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:01,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 21:19:01,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:02,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:02,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425479995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:02,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:02,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-11-22 21:19:02,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512191618] [2024-11-22 21:19:02,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:02,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 21:19:02,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:02,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 21:19:02,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-22 21:19:02,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-22 21:19:02,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 170 flow. Second operand has 15 states, 15 states have (on average 17.0) internal successors, (255), 15 states have internal predecessors, (255), 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) [2024-11-22 21:19:02,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:02,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-22 21:19:02,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:02,954 INFO L124 PetriNetUnfolderBase]: 1740/3509 cut-off events. [2024-11-22 21:19:02,954 INFO L125 PetriNetUnfolderBase]: For 796/796 co-relation queries the response was YES. [2024-11-22 21:19:02,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 3509 events. 1740/3509 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19737 event pairs, 262 based on Foata normal form. 54/3328 useless extension candidates. Maximal degree in co-relation 2561. Up to 699 conditions per place. [2024-11-22 21:19:02,969 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 194 selfloop transitions, 26 changer transitions 0/231 dead transitions. [2024-11-22 21:19:02,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 231 transitions, 1170 flow [2024-11-22 21:19:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 21:19:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 21:19:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 425 transitions. [2024-11-22 21:19:02,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-11-22 21:19:02,971 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 170 flow. Second operand 15 states and 425 transitions. [2024-11-22 21:19:02,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 231 transitions, 1170 flow [2024-11-22 21:19:02,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 231 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:02,976 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 417 flow [2024-11-22 21:19:02,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=417, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-22 21:19:02,978 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2024-11-22 21:19:02,979 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 417 flow [2024-11-22 21:19:02,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.0) internal successors, (255), 15 states have internal predecessors, (255), 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) [2024-11-22 21:19:02,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:02,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:02,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:19:03,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 21:19:03,184 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:03,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:03,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1089354263, now seen corresponding path program 1 times [2024-11-22 21:19:03,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:03,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925701185] [2024-11-22 21:19:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:03,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:03,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925701185] [2024-11-22 21:19:03,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925701185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:03,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:03,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:19:03,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509810674] [2024-11-22 21:19:03,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:03,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:19:03,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:03,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:19:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:19:03,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:03,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-22 21:19:03,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:03,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:03,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:03,616 INFO L124 PetriNetUnfolderBase]: 1695/3429 cut-off events. [2024-11-22 21:19:03,616 INFO L125 PetriNetUnfolderBase]: For 1886/1886 co-relation queries the response was YES. [2024-11-22 21:19:03,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8807 conditions, 3429 events. 1695/3429 cut-off events. For 1886/1886 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19738 event pairs, 1170 based on Foata normal form. 0/3315 useless extension candidates. Maximal degree in co-relation 7329. Up to 2532 conditions per place. [2024-11-22 21:19:03,634 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 64 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-22 21:19:03,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 566 flow [2024-11-22 21:19:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:19:03,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:19:03,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-22 21:19:03,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-22 21:19:03,636 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 417 flow. Second operand 4 states and 96 transitions. [2024-11-22 21:19:03,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 566 flow [2024-11-22 21:19:03,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 79 transitions, 556 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-22 21:19:03,645 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 411 flow [2024-11-22 21:19:03,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-11-22 21:19:03,646 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 34 predicate places. [2024-11-22 21:19:03,646 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 411 flow [2024-11-22 21:19:03,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-11-22 21:19:03,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:03,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:03,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:19:03,647 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:03,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:03,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1748660898, now seen corresponding path program 1 times [2024-11-22 21:19:03,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:03,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440891564] [2024-11-22 21:19:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:03,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:03,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:03,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440891564] [2024-11-22 21:19:03,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440891564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:03,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:03,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:19:03,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788739539] [2024-11-22 21:19:03,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:03,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:19:03,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:03,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:19:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:19:03,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:03,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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) [2024-11-22 21:19:03,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:03,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:03,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:04,332 INFO L124 PetriNetUnfolderBase]: 1780/3573 cut-off events. [2024-11-22 21:19:04,332 INFO L125 PetriNetUnfolderBase]: For 2161/2161 co-relation queries the response was YES. [2024-11-22 21:19:04,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9289 conditions, 3573 events. 1780/3573 cut-off events. For 2161/2161 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20371 event pairs, 436 based on Foata normal form. 0/3428 useless extension candidates. Maximal degree in co-relation 7786. Up to 2729 conditions per place. [2024-11-22 21:19:04,352 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 100 selfloop transitions, 7 changer transitions 0/118 dead transitions. [2024-11-22 21:19:04,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 118 transitions, 776 flow [2024-11-22 21:19:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:19:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:19:04,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-11-22 21:19:04,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-11-22 21:19:04,354 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 411 flow. Second operand 7 states and 185 transitions. [2024-11-22 21:19:04,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 118 transitions, 776 flow [2024-11-22 21:19:04,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 118 transitions, 768 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:19:04,363 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 458 flow [2024-11-22 21:19:04,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-11-22 21:19:04,364 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2024-11-22 21:19:04,364 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 458 flow [2024-11-22 21:19:04,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 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) [2024-11-22 21:19:04,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:04,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:04,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:19:04,365 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:04,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1117590170, now seen corresponding path program 1 times [2024-11-22 21:19:04,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:04,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522620910] [2024-11-22 21:19:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:04,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:04,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522620910] [2024-11-22 21:19:04,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522620910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:04,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:04,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:04,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188490686] [2024-11-22 21:19:04,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:04,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:04,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:19:04,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:04,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-22 21:19:04,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:04,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:04,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:04,831 INFO L124 PetriNetUnfolderBase]: 2658/5549 cut-off events. [2024-11-22 21:19:04,831 INFO L125 PetriNetUnfolderBase]: For 3888/3888 co-relation queries the response was YES. [2024-11-22 21:19:04,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14231 conditions, 5549 events. 2658/5549 cut-off events. For 3888/3888 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 36741 event pairs, 1282 based on Foata normal form. 137/5489 useless extension candidates. Maximal degree in co-relation 12407. Up to 3123 conditions per place. [2024-11-22 21:19:04,930 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 121 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2024-11-22 21:19:04,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 1088 flow [2024-11-22 21:19:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-22 21:19:04,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-11-22 21:19:04,938 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 458 flow. Second operand 3 states and 104 transitions. [2024-11-22 21:19:04,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 1088 flow [2024-11-22 21:19:04,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 135 transitions, 1072 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 21:19:04,948 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 461 flow [2024-11-22 21:19:04,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-11-22 21:19:04,949 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2024-11-22 21:19:04,949 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 461 flow [2024-11-22 21:19:04,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-22 21:19:04,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:04,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:04,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:19:04,950 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:04,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash -455977335, now seen corresponding path program 1 times [2024-11-22 21:19:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:04,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767386740] [2024-11-22 21:19:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:04,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:05,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:05,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767386740] [2024-11-22 21:19:05,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767386740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:05,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:05,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 21:19:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608044109] [2024-11-22 21:19:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:05,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:19:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:19:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:19:05,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:05,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 461 flow. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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) [2024-11-22 21:19:05,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:05,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:05,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:06,360 INFO L124 PetriNetUnfolderBase]: 3462/7028 cut-off events. [2024-11-22 21:19:06,361 INFO L125 PetriNetUnfolderBase]: For 5748/5748 co-relation queries the response was YES. [2024-11-22 21:19:06,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19704 conditions, 7028 events. 3462/7028 cut-off events. For 5748/5748 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 44915 event pairs, 786 based on Foata normal form. 0/6808 useless extension candidates. Maximal degree in co-relation 16129. Up to 3938 conditions per place. [2024-11-22 21:19:06,394 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 165 selfloop transitions, 12 changer transitions 0/189 dead transitions. [2024-11-22 21:19:06,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 189 transitions, 1335 flow [2024-11-22 21:19:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:19:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:19:06,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-11-22 21:19:06,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49228395061728397 [2024-11-22 21:19:06,398 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 461 flow. Second operand 12 states and 319 transitions. [2024-11-22 21:19:06,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 189 transitions, 1335 flow [2024-11-22 21:19:06,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 189 transitions, 1323 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:06,412 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 523 flow [2024-11-22 21:19:06,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=523, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-11-22 21:19:06,414 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 54 predicate places. [2024-11-22 21:19:06,414 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 523 flow [2024-11-22 21:19:06,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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) [2024-11-22 21:19:06,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:06,415 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:06,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:19:06,415 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:06,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:06,416 INFO L85 PathProgramCache]: Analyzing trace with hash -997094798, now seen corresponding path program 1 times [2024-11-22 21:19:06,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:06,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999707056] [2024-11-22 21:19:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:06,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:06,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:06,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999707056] [2024-11-22 21:19:06,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999707056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:06,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553392404] [2024-11-22 21:19:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:06,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:06,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:06,454 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) [2024-11-22 21:19:06,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:19:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:06,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 21:19:06,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:06,550 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:19:06,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553392404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:06,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:19:06,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-22 21:19:06,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625336776] [2024-11-22 21:19:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:06,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:06,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:06,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:06,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:19:06,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:06,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-22 21:19:06,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:06,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:06,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:07,092 INFO L124 PetriNetUnfolderBase]: 3504/7051 cut-off events. [2024-11-22 21:19:07,092 INFO L125 PetriNetUnfolderBase]: For 6627/6627 co-relation queries the response was YES. [2024-11-22 21:19:07,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20247 conditions, 7051 events. 3504/7051 cut-off events. For 6627/6627 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 45906 event pairs, 2843 based on Foata normal form. 19/6840 useless extension candidates. Maximal degree in co-relation 16638. Up to 6094 conditions per place. [2024-11-22 21:19:07,161 INFO L140 encePairwiseOnDemand]: 52/54 looper letters, 69 selfloop transitions, 1 changer transitions 2/82 dead transitions. [2024-11-22 21:19:07,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 82 transitions, 663 flow [2024-11-22 21:19:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-22 21:19:07,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-11-22 21:19:07,163 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 523 flow. Second operand 3 states and 77 transitions. [2024-11-22 21:19:07,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 82 transitions, 663 flow [2024-11-22 21:19:07,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 82 transitions, 643 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-22 21:19:07,180 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 498 flow [2024-11-22 21:19:07,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-11-22 21:19:07,181 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 48 predicate places. [2024-11-22 21:19:07,181 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 498 flow [2024-11-22 21:19:07,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-22 21:19:07,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:07,182 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:07,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:19:07,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 21:19:07,383 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:07,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:07,383 INFO L85 PathProgramCache]: Analyzing trace with hash 174056194, now seen corresponding path program 1 times [2024-11-22 21:19:07,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:07,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902940610] [2024-11-22 21:19:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:07,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:07,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:07,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902940610] [2024-11-22 21:19:07,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902940610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:07,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907007360] [2024-11-22 21:19:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:07,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:07,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:07,789 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) [2024-11-22 21:19:07,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:19:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:07,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 21:19:07,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:08,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:08,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907007360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:08,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:08,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-22 21:19:08,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822787050] [2024-11-22 21:19:08,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:08,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:19:08,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:08,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:19:08,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:19:08,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-22 21:19:08,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 498 flow. Second operand has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 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) [2024-11-22 21:19:08,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:08,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-22 21:19:08,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:10,285 INFO L124 PetriNetUnfolderBase]: 7062/14003 cut-off events. [2024-11-22 21:19:10,285 INFO L125 PetriNetUnfolderBase]: For 12617/12621 co-relation queries the response was YES. [2024-11-22 21:19:10,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39808 conditions, 14003 events. 7062/14003 cut-off events. For 12617/12621 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 98266 event pairs, 902 based on Foata normal form. 154/13703 useless extension candidates. Maximal degree in co-relation 39772. Up to 2318 conditions per place. [2024-11-22 21:19:10,364 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 317 selfloop transitions, 60 changer transitions 0/385 dead transitions. [2024-11-22 21:19:10,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 385 transitions, 2676 flow [2024-11-22 21:19:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 21:19:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-22 21:19:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 600 transitions. [2024-11-22 21:19:10,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5291005291005291 [2024-11-22 21:19:10,370 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 498 flow. Second operand 21 states and 600 transitions. [2024-11-22 21:19:10,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 385 transitions, 2676 flow [2024-11-22 21:19:10,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 385 transitions, 2673 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:10,415 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 1031 flow [2024-11-22 21:19:10,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1031, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-11-22 21:19:10,416 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 78 predicate places. [2024-11-22 21:19:10,416 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 1031 flow [2024-11-22 21:19:10,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 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) [2024-11-22 21:19:10,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:10,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:10,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:19:10,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:10,621 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:10,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:10,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1119191721, now seen corresponding path program 1 times [2024-11-22 21:19:10,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:10,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628657392] [2024-11-22 21:19:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:10,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628657392] [2024-11-22 21:19:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628657392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920298952] [2024-11-22 21:19:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:11,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:11,255 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) [2024-11-22 21:19:11,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:19:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:11,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-22 21:19:11,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:11,453 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 25 treesize of output 1 [2024-11-22 21:19:11,574 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 80 treesize of output 32 [2024-11-22 21:19:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:19:11,646 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:19:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920298952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:11,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:19:11,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2024-11-22 21:19:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403287661] [2024-11-22 21:19:11,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:11,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:19:11,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:11,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:19:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2024-11-22 21:19:11,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:11,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 1031 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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) [2024-11-22 21:19:11,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:11,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:11,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:14,597 INFO L124 PetriNetUnfolderBase]: 10165/20131 cut-off events. [2024-11-22 21:19:14,597 INFO L125 PetriNetUnfolderBase]: For 33551/33551 co-relation queries the response was YES. [2024-11-22 21:19:14,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63260 conditions, 20131 events. 10165/20131 cut-off events. For 33551/33551 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 153154 event pairs, 1401 based on Foata normal form. 0/19589 useless extension candidates. Maximal degree in co-relation 63210. Up to 4323 conditions per place. [2024-11-22 21:19:14,774 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 148 selfloop transitions, 142 changer transitions 0/300 dead transitions. [2024-11-22 21:19:14,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 300 transitions, 2676 flow [2024-11-22 21:19:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 21:19:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-22 21:19:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 416 transitions. [2024-11-22 21:19:14,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4531590413943355 [2024-11-22 21:19:14,779 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 1031 flow. Second operand 17 states and 416 transitions. [2024-11-22 21:19:14,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 300 transitions, 2676 flow [2024-11-22 21:19:15,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 300 transitions, 2519 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-11-22 21:19:15,051 INFO L231 Difference]: Finished difference. Result has 144 places, 191 transitions, 1936 flow [2024-11-22 21:19:15,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1936, PETRI_PLACES=144, PETRI_TRANSITIONS=191} [2024-11-22 21:19:15,052 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 95 predicate places. [2024-11-22 21:19:15,052 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 191 transitions, 1936 flow [2024-11-22 21:19:15,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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) [2024-11-22 21:19:15,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:15,053 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:15,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:19:15,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:15,254 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:15,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1831036496, now seen corresponding path program 1 times [2024-11-22 21:19:15,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:15,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417456765] [2024-11-22 21:19:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:15,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:15,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417456765] [2024-11-22 21:19:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417456765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996705927] [2024-11-22 21:19:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:15,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:15,550 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) [2024-11-22 21:19:15,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:19:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:15,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 21:19:15,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:15,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996705927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:16,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:16,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 17 [2024-11-22 21:19:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380900655] [2024-11-22 21:19:16,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:16,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:19:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:19:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:19:16,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-22 21:19:16,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 191 transitions, 1936 flow. Second operand has 19 states, 19 states have (on average 19.05263157894737) internal successors, (362), 19 states have internal predecessors, (362), 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) [2024-11-22 21:19:16,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:16,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-22 21:19:16,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:19,931 INFO L124 PetriNetUnfolderBase]: 10541/20509 cut-off events. [2024-11-22 21:19:19,931 INFO L125 PetriNetUnfolderBase]: For 38910/38920 co-relation queries the response was YES. [2024-11-22 21:19:20,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67377 conditions, 20509 events. 10541/20509 cut-off events. For 38910/38920 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 151698 event pairs, 1963 based on Foata normal form. 148/20195 useless extension candidates. Maximal degree in co-relation 67324. Up to 3480 conditions per place. [2024-11-22 21:19:20,080 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 394 selfloop transitions, 149 changer transitions 0/551 dead transitions. [2024-11-22 21:19:20,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 551 transitions, 5179 flow [2024-11-22 21:19:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 21:19:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 21:19:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 684 transitions. [2024-11-22 21:19:20,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-11-22 21:19:20,083 INFO L175 Difference]: Start difference. First operand has 144 places, 191 transitions, 1936 flow. Second operand 25 states and 684 transitions. [2024-11-22 21:19:20,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 551 transitions, 5179 flow [2024-11-22 21:19:20,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 551 transitions, 4750 flow, removed 214 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:20,279 INFO L231 Difference]: Finished difference. Result has 179 places, 268 transitions, 2938 flow [2024-11-22 21:19:20,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2938, PETRI_PLACES=179, PETRI_TRANSITIONS=268} [2024-11-22 21:19:20,280 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 130 predicate places. [2024-11-22 21:19:20,280 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 268 transitions, 2938 flow [2024-11-22 21:19:20,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.05263157894737) internal successors, (362), 19 states have internal predecessors, (362), 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) [2024-11-22 21:19:20,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:20,281 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:20,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 21:19:20,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 21:19:20,485 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:20,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:20,486 INFO L85 PathProgramCache]: Analyzing trace with hash 423730696, now seen corresponding path program 1 times [2024-11-22 21:19:20,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:20,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563729832] [2024-11-22 21:19:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:20,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:20,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:20,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563729832] [2024-11-22 21:19:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563729832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:20,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748567853] [2024-11-22 21:19:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:20,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:20,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:20,555 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) [2024-11-22 21:19:20,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:19:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:20,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 21:19:20,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:20,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:20,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748567853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:20,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:20,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 21:19:20,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884343668] [2024-11-22 21:19:20,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:20,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 21:19:20,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 21:19:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-22 21:19:20,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:20,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 268 transitions, 2938 flow. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 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) [2024-11-22 21:19:20,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:20,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:20,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:27,029 INFO L124 PetriNetUnfolderBase]: 16525/32600 cut-off events. [2024-11-22 21:19:27,029 INFO L125 PetriNetUnfolderBase]: For 82873/82892 co-relation queries the response was YES. [2024-11-22 21:19:27,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110190 conditions, 32600 events. 16525/32600 cut-off events. For 82873/82892 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 263371 event pairs, 5215 based on Foata normal form. 1024/33268 useless extension candidates. Maximal degree in co-relation 110124. Up to 6140 conditions per place. [2024-11-22 21:19:27,381 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 514 selfloop transitions, 146 changer transitions 0/669 dead transitions. [2024-11-22 21:19:27,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 669 transitions, 7981 flow [2024-11-22 21:19:27,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:19:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:19:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2024-11-22 21:19:27,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6782407407407407 [2024-11-22 21:19:27,385 INFO L175 Difference]: Start difference. First operand has 179 places, 268 transitions, 2938 flow. Second operand 8 states and 293 transitions. [2024-11-22 21:19:27,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 669 transitions, 7981 flow [2024-11-22 21:19:27,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 669 transitions, 7482 flow, removed 201 selfloop flow, removed 9 redundant places. [2024-11-22 21:19:27,916 INFO L231 Difference]: Finished difference. Result has 183 places, 347 transitions, 4335 flow [2024-11-22 21:19:27,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4335, PETRI_PLACES=183, PETRI_TRANSITIONS=347} [2024-11-22 21:19:27,917 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 134 predicate places. [2024-11-22 21:19:27,917 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 347 transitions, 4335 flow [2024-11-22 21:19:27,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 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) [2024-11-22 21:19:27,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:27,917 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:27,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 21:19:28,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 21:19:28,119 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:28,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2076465584, now seen corresponding path program 1 times [2024-11-22 21:19:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:28,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857693399] [2024-11-22 21:19:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:28,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-22 21:19:28,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:28,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857693399] [2024-11-22 21:19:28,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857693399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:28,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:28,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:28,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928121633] [2024-11-22 21:19:28,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:28,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:19:28,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:28,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 347 transitions, 4335 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-22 21:19:28,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:28,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:28,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:33,348 INFO L124 PetriNetUnfolderBase]: 14877/29147 cut-off events. [2024-11-22 21:19:33,348 INFO L125 PetriNetUnfolderBase]: For 87361/87400 co-relation queries the response was YES. [2024-11-22 21:19:33,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103770 conditions, 29147 events. 14877/29147 cut-off events. For 87361/87400 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 230036 event pairs, 10197 based on Foata normal form. 490/29449 useless extension candidates. Maximal degree in co-relation 103704. Up to 21010 conditions per place. [2024-11-22 21:19:33,631 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 296 selfloop transitions, 72 changer transitions 0/377 dead transitions. [2024-11-22 21:19:33,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 377 transitions, 5236 flow [2024-11-22 21:19:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-22 21:19:33,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-22 21:19:33,632 INFO L175 Difference]: Start difference. First operand has 183 places, 347 transitions, 4335 flow. Second operand 3 states and 96 transitions. [2024-11-22 21:19:33,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 377 transitions, 5236 flow [2024-11-22 21:19:34,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 377 transitions, 5156 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-11-22 21:19:34,011 INFO L231 Difference]: Finished difference. Result has 183 places, 329 transitions, 4312 flow [2024-11-22 21:19:34,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3841, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4312, PETRI_PLACES=183, PETRI_TRANSITIONS=329} [2024-11-22 21:19:34,012 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 134 predicate places. [2024-11-22 21:19:34,012 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 329 transitions, 4312 flow [2024-11-22 21:19:34,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-22 21:19:34,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:34,012 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:34,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:19:34,012 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:34,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash -850781396, now seen corresponding path program 1 times [2024-11-22 21:19:34,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:34,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572370916] [2024-11-22 21:19:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:34,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:35,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:35,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572370916] [2024-11-22 21:19:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572370916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630015281] [2024-11-22 21:19:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:35,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:35,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:35,025 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) [2024-11-22 21:19:35,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:19:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:35,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-22 21:19:35,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:35,216 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 25 treesize of output 1 [2024-11-22 21:19:35,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:19:35,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2024-11-22 21:19:35,508 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 80 treesize of output 32 [2024-11-22 21:19:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:35,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:35,934 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 54 treesize of output 46 [2024-11-22 21:19:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:36,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630015281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:36,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:36,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-22 21:19:36,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890867180] [2024-11-22 21:19:36,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:36,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 21:19:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:36,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 21:19:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 21:19:36,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:36,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 329 transitions, 4312 flow. Second operand has 35 states, 35 states have (on average 18.0) internal successors, (630), 35 states have internal predecessors, (630), 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) [2024-11-22 21:19:36,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:36,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:36,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:47,125 INFO L124 PetriNetUnfolderBase]: 19025/37405 cut-off events. [2024-11-22 21:19:47,126 INFO L125 PetriNetUnfolderBase]: For 118361/118361 co-relation queries the response was YES. [2024-11-22 21:19:47,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134638 conditions, 37405 events. 19025/37405 cut-off events. For 118361/118361 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 299280 event pairs, 2508 based on Foata normal form. 0/37224 useless extension candidates. Maximal degree in co-relation 134574. Up to 7257 conditions per place. [2024-11-22 21:19:47,441 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 371 selfloop transitions, 385 changer transitions 26/791 dead transitions. [2024-11-22 21:19:47,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 791 transitions, 8724 flow [2024-11-22 21:19:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-22 21:19:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-11-22 21:19:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1212 transitions. [2024-11-22 21:19:47,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4156378600823045 [2024-11-22 21:19:47,444 INFO L175 Difference]: Start difference. First operand has 183 places, 329 transitions, 4312 flow. Second operand 54 states and 1212 transitions. [2024-11-22 21:19:47,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 791 transitions, 8724 flow [2024-11-22 21:19:47,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 791 transitions, 8430 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-11-22 21:19:47,963 INFO L231 Difference]: Finished difference. Result has 239 places, 435 transitions, 6271 flow [2024-11-22 21:19:47,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4128, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=6271, PETRI_PLACES=239, PETRI_TRANSITIONS=435} [2024-11-22 21:19:47,964 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 190 predicate places. [2024-11-22 21:19:47,965 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 435 transitions, 6271 flow [2024-11-22 21:19:47,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 18.0) internal successors, (630), 35 states have internal predecessors, (630), 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) [2024-11-22 21:19:47,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:47,965 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:47,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 21:19:48,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:48,166 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:48,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash -917738821, now seen corresponding path program 1 times [2024-11-22 21:19:48,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:48,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593250699] [2024-11-22 21:19:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:48,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:48,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:48,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593250699] [2024-11-22 21:19:48,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593250699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:48,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040271691] [2024-11-22 21:19:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:48,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:48,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:48,466 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) [2024-11-22 21:19:48,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:19:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:48,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 21:19:48,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:48,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040271691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:49,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:49,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2024-11-22 21:19:49,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286024852] [2024-11-22 21:19:49,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:49,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 21:19:49,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 21:19:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-11-22 21:19:49,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-22 21:19:49,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 435 transitions, 6271 flow. Second operand has 21 states, 21 states have (on average 19.857142857142858) internal successors, (417), 21 states have internal predecessors, (417), 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) [2024-11-22 21:19:49,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:49,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-22 21:19:49,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand