./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.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 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:51:22,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:51:22,888 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:51:22,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:51:22,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:51:22,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:51:22,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:51:22,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:51:22,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:51:22,931 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:51:22,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:51:22,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:51:22,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:51:22,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:51:22,933 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:51:22,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:51:22,935 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:51:22,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:51:22,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:51:22,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:51:22,936 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:51:22,940 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:51:22,940 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:51:22,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:51:22,940 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:51:22,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:51:22,941 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:51:22,941 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:51:22,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:51:22,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:51:22,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:51:22,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:51:22,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:51:22,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:51:22,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:51:22,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:51:22,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:51:22,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:51:22,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:51:22,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:51:22,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:51:22,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:51:22,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-11-20 17:51:23,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:51:23,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:51:23,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:51:23,238 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:51:23,238 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:51:23,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-20 17:51:24,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:51:24,896 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:51:24,896 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-11-20 17:51:24,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8618b5865/c6c730dfcf894a33855e6b36165da294/FLAGca39d300b [2024-11-20 17:51:24,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8618b5865/c6c730dfcf894a33855e6b36165da294 [2024-11-20 17:51:24,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:51:24,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:51:24,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:51:24,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:51:24,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:51:24,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:24" (1/1) ... [2024-11-20 17:51:24,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29594b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:24, skipping insertion in model container [2024-11-20 17:51:24,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:51:24" (1/1) ... [2024-11-20 17:51:24,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:51:25,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:51:25,446 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:51:25,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:51:25,544 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:51:25,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25 WrapperNode [2024-11-20 17:51:25,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:51:25,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:51:25,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:51:25,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:51:25,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,593 INFO L138 Inliner]: procedures = 168, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 151 [2024-11-20 17:51:25,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:51:25,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:51:25,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:51:25,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:51:25,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,609 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,625 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-11-20 17:51:25,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:51:25,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:51:25,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:51:25,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:51:25,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (1/1) ... [2024-11-20 17:51:25,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:51:25,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:51:25,675 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) [2024-11-20 17:51:25,677 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 [2024-11-20 17:51:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 17:51:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 17:51:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 17:51:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 17:51:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-20 17:51:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-20 17:51:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-20 17:51:25,714 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-20 17:51:25,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 17:51:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 17:51:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 17:51:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 17:51:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 17:51:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:51:25,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-20 17:51:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-20 17:51:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-20 17:51:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-20 17:51:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:51:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 17:51:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 17:51:25,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 17:51:25,717 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 17:51:25,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:51:25,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:51:25,718 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:51:25,864 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:51:25,867 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:51:26,161 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:51:26,161 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:51:26,338 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:51:26,338 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 17:51:26,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:26 BoogieIcfgContainer [2024-11-20 17:51:26,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:51:26,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:51:26,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:51:26,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:51:26,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:51:24" (1/3) ... [2024-11-20 17:51:26,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f916ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:26, skipping insertion in model container [2024-11-20 17:51:26,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:51:25" (2/3) ... [2024-11-20 17:51:26,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f916ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:51:26, skipping insertion in model container [2024-11-20 17:51:26,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:51:26" (3/3) ... [2024-11-20 17:51:26,349 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-11-20 17:51:26,368 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:51:26,368 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-20 17:51:26,369 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:51:26,443 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 17:51:26,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 66 transitions, 146 flow [2024-11-20 17:51:26,526 INFO L124 PetriNetUnfolderBase]: 12/64 cut-off events. [2024-11-20 17:51:26,527 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:51:26,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 12/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 193 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-11-20 17:51:26,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 66 transitions, 146 flow [2024-11-20 17:51:26,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 63 transitions, 138 flow [2024-11-20 17:51:26,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:51:26,578 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;@5547cde4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:51:26,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-20 17:51:26,612 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:51:26,613 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2024-11-20 17:51:26,613 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:51:26,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:26,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:26,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:26,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash -17531593, now seen corresponding path program 1 times [2024-11-20 17:51:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293178623] [2024-11-20 17:51:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:27,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:27,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293178623] [2024-11-20 17:51:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293178623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:27,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:27,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:51:27,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181297804] [2024-11-20 17:51:27,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:27,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:51:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:51:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:51:27,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-20 17:51:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-20 17:51:27,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:27,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-20 17:51:27,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:27,395 INFO L124 PetriNetUnfolderBase]: 571/1094 cut-off events. [2024-11-20 17:51:27,395 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-20 17:51:27,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 1094 events. 571/1094 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6028 event pairs, 437 based on Foata normal form. 154/1136 useless extension candidates. Maximal degree in co-relation 1967. Up to 912 conditions per place. [2024-11-20 17:51:27,410 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 32 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2024-11-20 17:51:27,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 182 flow [2024-11-20 17:51:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-20 17:51:27,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-11-20 17:51:27,427 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 138 flow. Second operand 3 states and 104 transitions. [2024-11-20 17:51:27,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 182 flow [2024-11-20 17:51:27,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:51:27,434 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 110 flow [2024-11-20 17:51:27,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-11-20 17:51:27,443 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-11-20 17:51:27,443 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 110 flow [2024-11-20 17:51:27,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-11-20 17:51:27,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:27,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:27,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:51:27,444 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:27,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash -17531592, now seen corresponding path program 1 times [2024-11-20 17:51:27,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:27,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450230223] [2024-11-20 17:51:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:27,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:27,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:27,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450230223] [2024-11-20 17:51:27,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450230223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:27,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:27,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:51:27,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283058921] [2024-11-20 17:51:27,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:27,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:51:27,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:51:27,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:51:27,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-20 17:51:27,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-20 17:51:27,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:27,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-20 17:51:27,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:28,172 INFO L124 PetriNetUnfolderBase]: 1024/1958 cut-off events. [2024-11-20 17:51:28,172 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 17:51:28,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3583 conditions, 1958 events. 1024/1958 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11144 event pairs, 370 based on Foata normal form. 0/1779 useless extension candidates. Maximal degree in co-relation 3577. Up to 901 conditions per place. [2024-11-20 17:51:28,190 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-11-20 17:51:28,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 289 flow [2024-11-20 17:51:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-20 17:51:28,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-20 17:51:28,194 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 110 flow. Second operand 3 states and 129 transitions. [2024-11-20 17:51:28,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 289 flow [2024-11-20 17:51:28,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:51:28,199 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 123 flow [2024-11-20 17:51:28,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-11-20 17:51:28,200 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-11-20 17:51:28,201 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 123 flow [2024-11-20 17:51:28,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-20 17:51:28,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:28,202 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:28,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:51:28,202 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:28,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1702824681, now seen corresponding path program 1 times [2024-11-20 17:51:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:28,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550656866] [2024-11-20 17:51:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:28,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:28,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:28,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550656866] [2024-11-20 17:51:28,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550656866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:28,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:28,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:51:28,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864246815] [2024-11-20 17:51:28,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:28,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:51:28,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:28,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:51:28,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:51:28,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-20 17:51:28,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-20 17:51:28,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:28,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-20 17:51:28,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:28,663 INFO L124 PetriNetUnfolderBase]: 1068/1989 cut-off events. [2024-11-20 17:51:28,664 INFO L125 PetriNetUnfolderBase]: For 51/53 co-relation queries the response was YES. [2024-11-20 17:51:28,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 1989 events. 1068/1989 cut-off events. For 51/53 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11080 event pairs, 822 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 3810. Up to 1678 conditions per place. [2024-11-20 17:51:28,677 INFO L140 encePairwiseOnDemand]: 64/66 looper letters, 34 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-20 17:51:28,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 187 flow [2024-11-20 17:51:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-20 17:51:28,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-11-20 17:51:28,682 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 123 flow. Second operand 3 states and 98 transitions. [2024-11-20 17:51:28,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 187 flow [2024-11-20 17:51:28,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:51:28,684 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 117 flow [2024-11-20 17:51:28,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-11-20 17:51:28,685 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-11-20 17:51:28,686 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 117 flow [2024-11-20 17:51:28,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-20 17:51:28,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:28,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:28,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:51:28,687 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:28,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1703780011, now seen corresponding path program 1 times [2024-11-20 17:51:28,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:28,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045091808] [2024-11-20 17:51:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:28,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:28,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:28,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045091808] [2024-11-20 17:51:28,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045091808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:28,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:28,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:51:28,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198442229] [2024-11-20 17:51:28,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:28,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:51:28,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:28,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:51:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:51:28,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-20 17:51:28,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-11-20 17:51:28,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:28,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-20 17:51:28,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:29,012 INFO L124 PetriNetUnfolderBase]: 739/1428 cut-off events. [2024-11-20 17:51:29,012 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-20 17:51:29,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1428 events. 739/1428 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7489 event pairs, 204 based on Foata normal form. 23/1363 useless extension candidates. Maximal degree in co-relation 2683. Up to 770 conditions per place. [2024-11-20 17:51:29,023 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 52 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-20 17:51:29,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 270 flow [2024-11-20 17:51:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-20 17:51:29,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2024-11-20 17:51:29,027 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 117 flow. Second operand 3 states and 124 transitions. [2024-11-20 17:51:29,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 270 flow [2024-11-20 17:51:29,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:51:29,030 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 124 flow [2024-11-20 17:51:29,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-20 17:51:29,031 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-11-20 17:51:29,032 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 124 flow [2024-11-20 17:51:29,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-11-20 17:51:29,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:29,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:29,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:51:29,034 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:29,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash 329932780, now seen corresponding path program 1 times [2024-11-20 17:51:29,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:29,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260630897] [2024-11-20 17:51:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:29,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:29,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:29,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260630897] [2024-11-20 17:51:29,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260630897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:29,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:29,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:51:29,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692560942] [2024-11-20 17:51:29,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:29,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:51:29,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:29,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:51:29,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:51:29,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-20 17:51:29,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-20 17:51:29,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:29,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-20 17:51:29,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:29,331 INFO L124 PetriNetUnfolderBase]: 1181/2256 cut-off events. [2024-11-20 17:51:29,332 INFO L125 PetriNetUnfolderBase]: For 224/242 co-relation queries the response was YES. [2024-11-20 17:51:29,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 2256 events. 1181/2256 cut-off events. For 224/242 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13592 event pairs, 565 based on Foata normal form. 24/2104 useless extension candidates. Maximal degree in co-relation 4395. Up to 1235 conditions per place. [2024-11-20 17:51:29,345 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 56 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-20 17:51:29,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 298 flow [2024-11-20 17:51:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-11-20 17:51:29,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-11-20 17:51:29,348 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 124 flow. Second operand 3 states and 127 transitions. [2024-11-20 17:51:29,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 298 flow [2024-11-20 17:51:29,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:51:29,351 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 132 flow [2024-11-20 17:51:29,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=132, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-20 17:51:29,352 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2024-11-20 17:51:29,352 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 132 flow [2024-11-20 17:51:29,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-11-20 17:51:29,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:29,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:29,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 17:51:29,353 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:29,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash -529581639, now seen corresponding path program 1 times [2024-11-20 17:51:29,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:29,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944002399] [2024-11-20 17:51:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:29,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:29,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944002399] [2024-11-20 17:51:29,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944002399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:29,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:29,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:51:29,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387316044] [2024-11-20 17:51:29,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:29,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:51:29,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:29,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:51:29,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:51:29,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-20 17:51:29,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-20 17:51:29,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:29,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-20 17:51:29,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:29,659 INFO L124 PetriNetUnfolderBase]: 1071/2133 cut-off events. [2024-11-20 17:51:29,660 INFO L125 PetriNetUnfolderBase]: For 202/218 co-relation queries the response was YES. [2024-11-20 17:51:29,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4230 conditions, 2133 events. 1071/2133 cut-off events. For 202/218 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12150 event pairs, 502 based on Foata normal form. 47/2072 useless extension candidates. Maximal degree in co-relation 4219. Up to 903 conditions per place. [2024-11-20 17:51:29,673 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 53 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-11-20 17:51:29,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 302 flow [2024-11-20 17:51:29,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-20 17:51:29,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-20 17:51:29,675 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 132 flow. Second operand 3 states and 123 transitions. [2024-11-20 17:51:29,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 302 flow [2024-11-20 17:51:29,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:51:29,679 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 145 flow [2024-11-20 17:51:29,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-11-20 17:51:29,680 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2024-11-20 17:51:29,681 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 145 flow [2024-11-20 17:51:29,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-20 17:51:29,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:29,681 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:29,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 17:51:29,682 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:29,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:29,682 INFO L85 PathProgramCache]: Analyzing trace with hash 960948998, now seen corresponding path program 1 times [2024-11-20 17:51:29,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:29,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502980968] [2024-11-20 17:51:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:29,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:29,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502980968] [2024-11-20 17:51:29,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502980968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:29,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:29,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 17:51:29,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556189010] [2024-11-20 17:51:29,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:29,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:51:29,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:51:29,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:51:29,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-20 17:51:29,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-11-20 17:51:29,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:29,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-20 17:51:29,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:30,187 INFO L124 PetriNetUnfolderBase]: 1069/2029 cut-off events. [2024-11-20 17:51:30,188 INFO L125 PetriNetUnfolderBase]: For 304/317 co-relation queries the response was YES. [2024-11-20 17:51:30,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4226 conditions, 2029 events. 1069/2029 cut-off events. For 304/317 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11243 event pairs, 470 based on Foata normal form. 0/1881 useless extension candidates. Maximal degree in co-relation 4213. Up to 1334 conditions per place. [2024-11-20 17:51:30,198 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 87 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2024-11-20 17:51:30,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 110 transitions, 469 flow [2024-11-20 17:51:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:51:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:51:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-11-20 17:51:30,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346320346320347 [2024-11-20 17:51:30,201 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 145 flow. Second operand 7 states and 247 transitions. [2024-11-20 17:51:30,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 110 transitions, 469 flow [2024-11-20 17:51:30,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:51:30,203 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 187 flow [2024-11-20 17:51:30,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-11-20 17:51:30,204 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2024-11-20 17:51:30,205 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 187 flow [2024-11-20 17:51:30,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-11-20 17:51:30,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:30,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:30,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 17:51:30,206 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:30,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:30,206 INFO L85 PathProgramCache]: Analyzing trace with hash 301022442, now seen corresponding path program 1 times [2024-11-20 17:51:30,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:30,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594685895] [2024-11-20 17:51:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:30,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:30,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594685895] [2024-11-20 17:51:30,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594685895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:30,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:30,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:51:30,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720460688] [2024-11-20 17:51:30,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:30,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:51:30,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:30,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:51:30,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:51:30,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-20 17:51:30,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-20 17:51:30,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:30,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-20 17:51:30,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:30,567 INFO L124 PetriNetUnfolderBase]: 1714/3375 cut-off events. [2024-11-20 17:51:30,567 INFO L125 PetriNetUnfolderBase]: For 899/942 co-relation queries the response was YES. [2024-11-20 17:51:30,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 3375 events. 1714/3375 cut-off events. For 899/942 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 21388 event pairs, 797 based on Foata normal form. 75/3295 useless extension candidates. Maximal degree in co-relation 7357. Up to 1698 conditions per place. [2024-11-20 17:51:30,592 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 69 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-11-20 17:51:30,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 448 flow [2024-11-20 17:51:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-11-20 17:51:30,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-11-20 17:51:30,593 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 187 flow. Second operand 3 states and 127 transitions. [2024-11-20 17:51:30,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 448 flow [2024-11-20 17:51:30,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:51:30,599 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 193 flow [2024-11-20 17:51:30,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-11-20 17:51:30,600 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-20 17:51:30,600 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 193 flow [2024-11-20 17:51:30,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-11-20 17:51:30,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:30,601 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:30,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 17:51:30,601 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:30,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1172466476, now seen corresponding path program 1 times [2024-11-20 17:51:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823979143] [2024-11-20 17:51:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:30,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823979143] [2024-11-20 17:51:30,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823979143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:30,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:30,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:51:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767441526] [2024-11-20 17:51:30,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:30,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:51:30,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:51:30,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:51:30,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-20 17:51:30,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-20 17:51:30,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:30,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-20 17:51:30,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:30,914 INFO L124 PetriNetUnfolderBase]: 1328/2565 cut-off events. [2024-11-20 17:51:30,914 INFO L125 PetriNetUnfolderBase]: For 734/753 co-relation queries the response was YES. [2024-11-20 17:51:30,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5803 conditions, 2565 events. 1328/2565 cut-off events. For 734/753 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14608 event pairs, 487 based on Foata normal form. 91/2601 useless extension candidates. Maximal degree in co-relation 5785. Up to 1421 conditions per place. [2024-11-20 17:51:30,930 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 54 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-11-20 17:51:30,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 356 flow [2024-11-20 17:51:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:30,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-20 17:51:30,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5808080808080808 [2024-11-20 17:51:30,932 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 193 flow. Second operand 3 states and 115 transitions. [2024-11-20 17:51:30,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 356 flow [2024-11-20 17:51:30,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 347 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-20 17:51:30,936 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 200 flow [2024-11-20 17:51:30,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-20 17:51:30,937 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-20 17:51:30,938 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 200 flow [2024-11-20 17:51:30,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-20 17:51:30,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:30,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:30,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 17:51:30,939 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:30,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1637209546, now seen corresponding path program 1 times [2024-11-20 17:51:30,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:30,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264275085] [2024-11-20 17:51:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:30,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264275085] [2024-11-20 17:51:31,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264275085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:31,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:51:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41090205] [2024-11-20 17:51:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:31,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:51:31,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:31,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:51:31,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:51:31,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-20 17:51:31,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:51:31,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:31,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-20 17:51:31,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:31,232 INFO L124 PetriNetUnfolderBase]: 804/1812 cut-off events. [2024-11-20 17:51:31,233 INFO L125 PetriNetUnfolderBase]: For 678/678 co-relation queries the response was YES. [2024-11-20 17:51:31,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4147 conditions, 1812 events. 804/1812 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9897 event pairs, 255 based on Foata normal form. 92/1855 useless extension candidates. Maximal degree in co-relation 4129. Up to 821 conditions per place. [2024-11-20 17:51:31,243 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 48 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2024-11-20 17:51:31,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 352 flow [2024-11-20 17:51:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-20 17:51:31,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5707070707070707 [2024-11-20 17:51:31,245 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 200 flow. Second operand 3 states and 113 transitions. [2024-11-20 17:51:31,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 352 flow [2024-11-20 17:51:31,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:51:31,249 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 202 flow [2024-11-20 17:51:31,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-11-20 17:51:31,252 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-11-20 17:51:31,252 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 202 flow [2024-11-20 17:51:31,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:51:31,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:31,253 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] [2024-11-20 17:51:31,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 17:51:31,253 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:31,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:31,253 INFO L85 PathProgramCache]: Analyzing trace with hash -956769914, now seen corresponding path program 1 times [2024-11-20 17:51:31,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:31,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888155321] [2024-11-20 17:51:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:31,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:31,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888155321] [2024-11-20 17:51:31,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888155321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:31,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:31,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:51:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733677635] [2024-11-20 17:51:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:31,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:51:31,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:51:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:51:31,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-20 17:51:31,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-20 17:51:31,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:31,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-20 17:51:31,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:31,902 INFO L124 PetriNetUnfolderBase]: 1473/3155 cut-off events. [2024-11-20 17:51:31,903 INFO L125 PetriNetUnfolderBase]: For 1353/1358 co-relation queries the response was YES. [2024-11-20 17:51:31,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 3155 events. 1473/3155 cut-off events. For 1353/1358 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17799 event pairs, 766 based on Foata normal form. 3/3018 useless extension candidates. Maximal degree in co-relation 7561. Up to 1308 conditions per place. [2024-11-20 17:51:31,925 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 90 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-20 17:51:31,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 111 transitions, 578 flow [2024-11-20 17:51:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:51:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:51:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-11-20 17:51:31,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2024-11-20 17:51:31,927 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 202 flow. Second operand 4 states and 173 transitions. [2024-11-20 17:51:31,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 111 transitions, 578 flow [2024-11-20 17:51:31,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 111 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:51:31,936 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 214 flow [2024-11-20 17:51:31,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-11-20 17:51:31,937 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2024-11-20 17:51:31,938 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 214 flow [2024-11-20 17:51:31,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-20 17:51:31,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:31,939 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] [2024-11-20 17:51:31,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 17:51:31,939 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:31,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:31,939 INFO L85 PathProgramCache]: Analyzing trace with hash -805603092, now seen corresponding path program 1 times [2024-11-20 17:51:31,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:31,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514309136] [2024-11-20 17:51:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:31,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:31,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:31,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514309136] [2024-11-20 17:51:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514309136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:51:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467088003] [2024-11-20 17:51:31,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:31,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:51:31,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:51:32,002 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) [2024-11-20 17:51:32,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:51:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:32,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 17:51:32,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:51:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 17:51:32,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:51:32,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467088003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:32,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 17:51:32,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-20 17:51:32,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056261600] [2024-11-20 17:51:32,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:32,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:51:32,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:32,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:51:32,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:51:32,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-20 17:51:32,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:51:32,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:32,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-20 17:51:32,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:32,437 INFO L124 PetriNetUnfolderBase]: 1461/3120 cut-off events. [2024-11-20 17:51:32,437 INFO L125 PetriNetUnfolderBase]: For 1223/1232 co-relation queries the response was YES. [2024-11-20 17:51:32,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7366 conditions, 3120 events. 1461/3120 cut-off events. For 1223/1232 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17943 event pairs, 1152 based on Foata normal form. 13/3026 useless extension candidates. Maximal degree in co-relation 7345. Up to 2476 conditions per place. [2024-11-20 17:51:32,453 INFO L140 encePairwiseOnDemand]: 64/66 looper letters, 38 selfloop transitions, 1 changer transitions 3/59 dead transitions. [2024-11-20 17:51:32,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 294 flow [2024-11-20 17:51:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:51:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:51:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-20 17:51:32,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 17:51:32,456 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 214 flow. Second operand 3 states and 99 transitions. [2024-11-20 17:51:32,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 294 flow [2024-11-20 17:51:32,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 17:51:32,460 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 204 flow [2024-11-20 17:51:32,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-11-20 17:51:32,461 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-20 17:51:32,462 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 204 flow [2024-11-20 17:51:32,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:51:32,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:32,463 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:32,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 17:51:32,667 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,SelfDestructingSolverStorable11 [2024-11-20 17:51:32,668 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:32,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1359728003, now seen corresponding path program 1 times [2024-11-20 17:51:32,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:32,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093591169] [2024-11-20 17:51:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:32,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 17:51:32,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131730823] [2024-11-20 17:51:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:32,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:51:32,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:51:32,721 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) [2024-11-20 17:51:32,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 17:51:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:32,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:51:32,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:51:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:33,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:51:33,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:33,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093591169] [2024-11-20 17:51:33,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 17:51:33,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131730823] [2024-11-20 17:51:33,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131730823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:33,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:33,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:51:33,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159075859] [2024-11-20 17:51:33,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:33,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:51:33,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:33,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:51:33,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:51:33,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-20 17:51:33,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-11-20 17:51:33,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:33,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-20 17:51:33,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:33,421 INFO L124 PetriNetUnfolderBase]: 1014/2199 cut-off events. [2024-11-20 17:51:33,422 INFO L125 PetriNetUnfolderBase]: For 891/893 co-relation queries the response was YES. [2024-11-20 17:51:33,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 2199 events. 1014/2199 cut-off events. For 891/893 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 10823 event pairs, 315 based on Foata normal form. 18/2158 useless extension candidates. Maximal degree in co-relation 5183. Up to 1159 conditions per place. [2024-11-20 17:51:33,432 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 58 selfloop transitions, 3 changer transitions 3/81 dead transitions. [2024-11-20 17:51:33,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 417 flow [2024-11-20 17:51:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:51:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:51:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-20 17:51:33,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.571969696969697 [2024-11-20 17:51:33,434 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 204 flow. Second operand 4 states and 151 transitions. [2024-11-20 17:51:33,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 417 flow [2024-11-20 17:51:33,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:51:33,438 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 213 flow [2024-11-20 17:51:33,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-20 17:51:33,438 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2024-11-20 17:51:33,438 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 213 flow [2024-11-20 17:51:33,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-11-20 17:51:33,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:33,439 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] [2024-11-20 17:51:33,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 17:51:33,639 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,SelfDestructingSolverStorable12 [2024-11-20 17:51:33,640 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:33,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash -504612373, now seen corresponding path program 1 times [2024-11-20 17:51:33,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:33,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611856731] [2024-11-20 17:51:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:33,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:34,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:34,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611856731] [2024-11-20 17:51:34,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611856731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:34,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:34,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 17:51:34,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138083000] [2024-11-20 17:51:34,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:34,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:51:34,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:34,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:51:34,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:51:34,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-11-20 17:51:34,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 213 flow. Second operand has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 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) [2024-11-20 17:51:34,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:34,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-11-20 17:51:34,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:35,679 INFO L124 PetriNetUnfolderBase]: 1202/2580 cut-off events. [2024-11-20 17:51:35,679 INFO L125 PetriNetUnfolderBase]: For 1192/1196 co-relation queries the response was YES. [2024-11-20 17:51:35,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6228 conditions, 2580 events. 1202/2580 cut-off events. For 1192/1196 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13454 event pairs, 384 based on Foata normal form. 0/2506 useless extension candidates. Maximal degree in co-relation 6203. Up to 895 conditions per place. [2024-11-20 17:51:35,691 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 108 selfloop transitions, 15 changer transitions 14/154 dead transitions. [2024-11-20 17:51:35,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 829 flow [2024-11-20 17:51:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:51:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:51:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 401 transitions. [2024-11-20 17:51:35,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5063131313131313 [2024-11-20 17:51:35,694 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 213 flow. Second operand 12 states and 401 transitions. [2024-11-20 17:51:35,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 829 flow [2024-11-20 17:51:35,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:51:35,699 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 299 flow [2024-11-20 17:51:35,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=299, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-11-20 17:51:35,700 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-11-20 17:51:35,701 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 299 flow [2024-11-20 17:51:35,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 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) [2024-11-20 17:51:35,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:35,701 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:35,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 17:51:35,702 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:35,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1189847007, now seen corresponding path program 1 times [2024-11-20 17:51:35,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:35,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555662973] [2024-11-20 17:51:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:35,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:36,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555662973] [2024-11-20 17:51:36,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555662973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:51:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836078373] [2024-11-20 17:51:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:36,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:51:36,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:51:36,058 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) [2024-11-20 17:51:36,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 17:51:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:36,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 17:51:36,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:51:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:36,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:51:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:37,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836078373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:51:37,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:51:37,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-20 17:51:37,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696793149] [2024-11-20 17:51:37,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:51:37,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:51:37,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:37,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:51:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:51:37,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 66 [2024-11-20 17:51:37,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 299 flow. Second operand has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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) [2024-11-20 17:51:37,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:37,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 66 [2024-11-20 17:51:37,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:38,230 INFO L124 PetriNetUnfolderBase]: 1368/2899 cut-off events. [2024-11-20 17:51:38,230 INFO L125 PetriNetUnfolderBase]: For 1658/1660 co-relation queries the response was YES. [2024-11-20 17:51:38,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 2899 events. 1368/2899 cut-off events. For 1658/1660 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14224 event pairs, 842 based on Foata normal form. 54/2873 useless extension candidates. Maximal degree in co-relation 7305. Up to 1611 conditions per place. [2024-11-20 17:51:38,244 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 59 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-20 17:51:38,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 483 flow [2024-11-20 17:51:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:51:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:51:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-20 17:51:38,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037878787878788 [2024-11-20 17:51:38,246 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 299 flow. Second operand 4 states and 133 transitions. [2024-11-20 17:51:38,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 483 flow [2024-11-20 17:51:38,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 473 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-20 17:51:38,252 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 301 flow [2024-11-20 17:51:38,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-11-20 17:51:38,254 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-11-20 17:51:38,254 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 301 flow [2024-11-20 17:51:38,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 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) [2024-11-20 17:51:38,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:38,255 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1] [2024-11-20 17:51:38,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 17:51:38,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:51:38,460 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:38,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1361029099, now seen corresponding path program 1 times [2024-11-20 17:51:38,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:38,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688052094] [2024-11-20 17:51:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:38,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 17:51:38,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688052094] [2024-11-20 17:51:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688052094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:51:38,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:51:38,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:51:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595421320] [2024-11-20 17:51:38,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:51:38,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:51:38,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:51:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:51:38,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-20 17:51:38,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2024-11-20 17:51:38,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:38,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-20 17:51:38,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:39,019 INFO L124 PetriNetUnfolderBase]: 1428/2962 cut-off events. [2024-11-20 17:51:39,020 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2024-11-20 17:51:39,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7624 conditions, 2962 events. 1428/2962 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 14419 event pairs, 714 based on Foata normal form. 0/2882 useless extension candidates. Maximal degree in co-relation 7595. Up to 1757 conditions per place. [2024-11-20 17:51:39,036 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 76 selfloop transitions, 11 changer transitions 5/104 dead transitions. [2024-11-20 17:51:39,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 104 transitions, 644 flow [2024-11-20 17:51:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:51:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:51:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-20 17:51:39,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2024-11-20 17:51:39,038 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 301 flow. Second operand 6 states and 199 transitions. [2024-11-20 17:51:39,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 104 transitions, 644 flow [2024-11-20 17:51:39,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 104 transitions, 632 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-20 17:51:39,045 INFO L231 Difference]: Finished difference. Result has 85 places, 60 transitions, 312 flow [2024-11-20 17:51:39,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2024-11-20 17:51:39,045 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-11-20 17:51:39,046 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 312 flow [2024-11-20 17:51:39,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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) [2024-11-20 17:51:39,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:39,046 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1] [2024-11-20 17:51:39,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 17:51:39,047 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:39,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2079303288, now seen corresponding path program 1 times [2024-11-20 17:51:39,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:39,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130981098] [2024-11-20 17:51:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:39,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:39,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:39,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130981098] [2024-11-20 17:51:39,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130981098] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:51:39,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725458278] [2024-11-20 17:51:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:39,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:51:39,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:51:39,363 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) [2024-11-20 17:51:39,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 17:51:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:39,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:51:39,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:51:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:39,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:51:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:40,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725458278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:51:40,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:51:40,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-20 17:51:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18853222] [2024-11-20 17:51:40,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:51:40,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:51:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:51:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:51:41,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-11-20 17:51:41,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 312 flow. Second operand has 11 states, 11 states have (on average 31.272727272727273) internal successors, (344), 11 states have internal predecessors, (344), 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) [2024-11-20 17:51:41,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:41,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-11-20 17:51:41,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:46,003 INFO L124 PetriNetUnfolderBase]: 2271/5005 cut-off events. [2024-11-20 17:51:46,003 INFO L125 PetriNetUnfolderBase]: For 3833/3834 co-relation queries the response was YES. [2024-11-20 17:51:46,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13036 conditions, 5005 events. 2271/5005 cut-off events. For 3833/3834 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 24072 event pairs, 752 based on Foata normal form. 37/4932 useless extension candidates. Maximal degree in co-relation 13007. Up to 863 conditions per place. [2024-11-20 17:51:46,036 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 146 selfloop transitions, 9 changer transitions 2/170 dead transitions. [2024-11-20 17:51:46,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 170 transitions, 1135 flow [2024-11-20 17:51:46,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 17:51:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 17:51:46,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 318 transitions. [2024-11-20 17:51:46,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-11-20 17:51:46,038 INFO L175 Difference]: Start difference. First operand has 85 places, 60 transitions, 312 flow. Second operand 8 states and 318 transitions. [2024-11-20 17:51:46,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 170 transitions, 1135 flow [2024-11-20 17:51:46,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1093 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:51:46,049 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 357 flow [2024-11-20 17:51:46,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2024-11-20 17:51:46,049 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 34 predicate places. [2024-11-20 17:51:46,050 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 357 flow [2024-11-20 17:51:46,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.272727272727273) internal successors, (344), 11 states have internal predecessors, (344), 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) [2024-11-20 17:51:46,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:46,050 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2024-11-20 17:51:46,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 17:51:46,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 17:51:46,255 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:46,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash -583328023, now seen corresponding path program 1 times [2024-11-20 17:51:46,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:46,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799130394] [2024-11-20 17:51:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 17:51:46,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384010187] [2024-11-20 17:51:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:46,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:51:46,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:51:46,308 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) [2024-11-20 17:51:46,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 17:51:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:46,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 17:51:46,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:51:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:46,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:51:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:48,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:51:48,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799130394] [2024-11-20 17:51:48,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-20 17:51:48,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384010187] [2024-11-20 17:51:48,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384010187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:51:48,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:51:48,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2024-11-20 17:51:48,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423357481] [2024-11-20 17:51:48,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:51:48,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:51:48,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:51:48,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:51:48,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:51:49,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-20 17:51:49,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 357 flow. Second operand has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 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) [2024-11-20 17:51:49,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:51:49,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-20 17:51:49,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:51:51,094 INFO L124 PetriNetUnfolderBase]: 1895/4089 cut-off events. [2024-11-20 17:51:51,094 INFO L125 PetriNetUnfolderBase]: For 3282/3282 co-relation queries the response was YES. [2024-11-20 17:51:51,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10725 conditions, 4089 events. 1895/4089 cut-off events. For 3282/3282 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 17755 event pairs, 459 based on Foata normal form. 27/4041 useless extension candidates. Maximal degree in co-relation 10690. Up to 1314 conditions per place. [2024-11-20 17:51:51,120 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 154 selfloop transitions, 10 changer transitions 4/180 dead transitions. [2024-11-20 17:51:51,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 180 transitions, 1136 flow [2024-11-20 17:51:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 17:51:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 17:51:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 365 transitions. [2024-11-20 17:51:51,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-11-20 17:51:51,123 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 357 flow. Second operand 10 states and 365 transitions. [2024-11-20 17:51:51,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 180 transitions, 1136 flow [2024-11-20 17:51:51,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 180 transitions, 1118 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-20 17:51:51,133 INFO L231 Difference]: Finished difference. Result has 101 places, 66 transitions, 385 flow [2024-11-20 17:51:51,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=101, PETRI_TRANSITIONS=66} [2024-11-20 17:51:51,134 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2024-11-20 17:51:51,134 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 66 transitions, 385 flow [2024-11-20 17:51:51,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.90909090909091) internal successors, (307), 11 states have internal predecessors, (307), 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) [2024-11-20 17:51:51,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:51:51,135 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1] [2024-11-20 17:51:51,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 17:51:51,335 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,SelfDestructingSolverStorable17 [2024-11-20 17:51:51,336 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-11-20 17:51:51,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:51:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1815092925, now seen corresponding path program 1 times [2024-11-20 17:51:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:51:51,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126241923] [2024-11-20 17:51:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:51,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:51:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-20 17:51:51,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490445386] [2024-11-20 17:51:51,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:51:51,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:51:51,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:51:51,414 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) [2024-11-20 17:51:51,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 17:51:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:51:51,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-20 17:51:51,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:51:51,698 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 9 treesize of output 3 [2024-11-20 17:51:52,288 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 17 treesize of output 13 [2024-11-20 17:51:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:51:52,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:51:53,226 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 40 treesize of output 36 [2024-11-20 17:51:53,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 17:51:53,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 75 [2024-11-20 17:51:53,388 INFO L349 Elim1Store]: treesize reduction 50, result has 51.0 percent of original size [2024-11-20 17:51:53,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 127 [2024-11-20 17:51:53,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 17:51:53,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 80