./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:39:43,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:39:43,966 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:39:43,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:39:43,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:39:44,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:39:44,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:39:44,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:39:44,018 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:39:44,019 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:39:44,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:39:44,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:39:44,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:39:44,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:39:44,023 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:39:44,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:39:44,024 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:39:44,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:39:44,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:39:44,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:39:44,025 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:39:44,027 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:39:44,028 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:39:44,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:39:44,028 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:39:44,029 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:39:44,029 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:39:44,029 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:39:44,029 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:39:44,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:39:44,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:39:44,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:39:44,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:39:44,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:39:44,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:39:44,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:39:44,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:39:44,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:39:44,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:39:44,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:39:44,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:39:44,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:39:44,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-11-19 09:39:44,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:39:44,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:39:44,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:39:44,421 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:39:44,421 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:39:44,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-19 09:39:46,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:39:46,477 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:39:46,479 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-19 09:39:46,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/152f41a36/44abe821c7cd40e98bf6f73974649c9f/FLAG94fa9d346 [2024-11-19 09:39:46,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/152f41a36/44abe821c7cd40e98bf6f73974649c9f [2024-11-19 09:39:46,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:39:46,740 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:39:46,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:39:46,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:39:46,753 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:39:46,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:39:46" (1/1) ... [2024-11-19 09:39:46,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf9d406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:46, skipping insertion in model container [2024-11-19 09:39:46,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:39:46" (1/1) ... [2024-11-19 09:39:46,811 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:39:47,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:39:47,354 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:39:47,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:39:47,580 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:39:47,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47 WrapperNode [2024-11-19 09:39:47,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:39:47,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:39:47,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:39:47,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:39:47,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,667 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 123 [2024-11-19 09:39:47,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:39:47,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:39:47,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:39:47,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:39:47,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,703 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-11-19 09:39:47,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:39:47,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:39:47,721 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:39:47,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:39:47,722 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (1/1) ... [2024-11-19 09:39:47,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:39:47,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:39:47,815 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) [2024-11-19 09:39:47,824 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 [2024-11-19 09:39:47,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:39:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:39:47,895 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-19 09:39:47,895 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-19 09:39:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:39:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:39:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:39:47,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:39:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:39:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:39:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:39:47,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:39:47,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:39:47,901 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:39:48,082 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:39:48,084 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:39:48,486 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:39:48,486 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:39:48,776 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:39:48,776 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 09:39:48,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:39:48 BoogieIcfgContainer [2024-11-19 09:39:48,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:39:48,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:39:48,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:39:48,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:39:48,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:39:46" (1/3) ... [2024-11-19 09:39:48,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d804d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:39:48, skipping insertion in model container [2024-11-19 09:39:48,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:39:47" (2/3) ... [2024-11-19 09:39:48,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d804d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:39:48, skipping insertion in model container [2024-11-19 09:39:48,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:39:48" (3/3) ... [2024-11-19 09:39:48,784 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-11-19 09:39:48,800 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:39:48,800 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-11-19 09:39:48,800 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:39:48,913 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:39:48,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 75 transitions, 154 flow [2024-11-19 09:39:49,031 INFO L124 PetriNetUnfolderBase]: 10/74 cut-off events. [2024-11-19 09:39:49,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:39:49,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 10/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 218 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-19 09:39:49,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 75 transitions, 154 flow [2024-11-19 09:39:49,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 74 transitions, 151 flow [2024-11-19 09:39:49,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:39:49,063 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;@3742306b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:39:49,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-19 09:39:49,068 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:39:49,068 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-19 09:39:49,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:39:49,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:49,070 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-19 09:39:49,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:49,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:49,076 INFO L85 PathProgramCache]: Analyzing trace with hash 13222, now seen corresponding path program 1 times [2024-11-19 09:39:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:49,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049024262] [2024-11-19 09:39:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:49,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:49,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:49,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049024262] [2024-11-19 09:39:49,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049024262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:49,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:39:49,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117825833] [2024-11-19 09:39:49,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:49,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:39:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:49,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:39:49,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:39:49,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 75 [2024-11-19 09:39:49,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-11-19 09:39:49,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:49,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 75 [2024-11-19 09:39:49,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:49,674 INFO L124 PetriNetUnfolderBase]: 212/615 cut-off events. [2024-11-19 09:39:49,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:39:49,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 615 events. 212/615 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3842 event pairs, 147 based on Foata normal form. 54/503 useless extension candidates. Maximal degree in co-relation 976. Up to 368 conditions per place. [2024-11-19 09:39:49,686 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 28 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-11-19 09:39:49,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 65 transitions, 193 flow [2024-11-19 09:39:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:39:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:39:49,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-19 09:39:49,697 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-19 09:39:49,700 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 151 flow. Second operand 3 states and 145 transitions. [2024-11-19 09:39:49,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 65 transitions, 193 flow [2024-11-19 09:39:49,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:39:49,707 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 136 flow [2024-11-19 09:39:49,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-11-19 09:39:49,715 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2024-11-19 09:39:49,715 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 136 flow [2024-11-19 09:39:49,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-11-19 09:39:49,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:49,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-19 09:39:49,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:39:49,716 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:49,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:49,716 INFO L85 PathProgramCache]: Analyzing trace with hash 13223, now seen corresponding path program 1 times [2024-11-19 09:39:49,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:49,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678589698] [2024-11-19 09:39:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:49,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:49,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:49,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678589698] [2024-11-19 09:39:49,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678589698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:49,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:49,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:39:49,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433842756] [2024-11-19 09:39:49,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:49,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:39:49,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:49,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:39:49,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:39:49,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 75 [2024-11-19 09:39:49,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-11-19 09:39:49,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:49,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 75 [2024-11-19 09:39:49,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:50,135 INFO L124 PetriNetUnfolderBase]: 212/614 cut-off events. [2024-11-19 09:39:50,135 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:39:50,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 614 events. 212/614 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3836 event pairs, 147 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 980. Up to 368 conditions per place. [2024-11-19 09:39:50,145 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 28 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-19 09:39:50,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 194 flow [2024-11-19 09:39:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:39:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:39:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-19 09:39:50,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2024-11-19 09:39:50,149 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 136 flow. Second operand 3 states and 139 transitions. [2024-11-19 09:39:50,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 194 flow [2024-11-19 09:39:50,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:39:50,152 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 134 flow [2024-11-19 09:39:50,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-11-19 09:39:50,154 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-11-19 09:39:50,154 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 134 flow [2024-11-19 09:39:50,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-11-19 09:39:50,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:50,155 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:39:50,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:39:50,156 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:50,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:50,157 INFO L85 PathProgramCache]: Analyzing trace with hash -658033413, now seen corresponding path program 1 times [2024-11-19 09:39:50,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:50,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120412394] [2024-11-19 09:39:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:50,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:50,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:50,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120412394] [2024-11-19 09:39:50,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120412394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:50,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:39:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701238577] [2024-11-19 09:39:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:50,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:39:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:50,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:39:50,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:39:50,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 75 [2024-11-19 09:39:50,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-19 09:39:50,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:50,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 75 [2024-11-19 09:39:50,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:50,385 INFO L124 PetriNetUnfolderBase]: 212/612 cut-off events. [2024-11-19 09:39:50,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:39:50,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 612 events. 212/612 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3811 event pairs, 147 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 978. Up to 368 conditions per place. [2024-11-19 09:39:50,391 INFO L140 encePairwiseOnDemand]: 73/75 looper letters, 29 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2024-11-19 09:39:50,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 192 flow [2024-11-19 09:39:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:39:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:39:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-19 09:39:50,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2024-11-19 09:39:50,395 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 134 flow. Second operand 3 states and 139 transitions. [2024-11-19 09:39:50,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 192 flow [2024-11-19 09:39:50,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:39:50,397 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 130 flow [2024-11-19 09:39:50,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-11-19 09:39:50,398 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-19 09:39:50,398 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 130 flow [2024-11-19 09:39:50,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-19 09:39:50,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:50,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:39:50,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:39:50,399 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:50,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:50,400 INFO L85 PathProgramCache]: Analyzing trace with hash -943636261, now seen corresponding path program 1 times [2024-11-19 09:39:50,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:50,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639019548] [2024-11-19 09:39:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:50,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:50,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:50,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639019548] [2024-11-19 09:39:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639019548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:50,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:50,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:39:50,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411014192] [2024-11-19 09:39:50,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:50,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:39:50,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:50,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:39:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:39:50,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2024-11-19 09:39:50,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-11-19 09:39:50,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:50,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2024-11-19 09:39:50,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:50,903 INFO L124 PetriNetUnfolderBase]: 212/560 cut-off events. [2024-11-19 09:39:50,904 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:39:50,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 560 events. 212/560 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3172 event pairs, 8 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 951. Up to 359 conditions per place. [2024-11-19 09:39:50,907 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 38 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-11-19 09:39:50,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 222 flow [2024-11-19 09:39:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:39:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:39:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-19 09:39:50,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5146666666666667 [2024-11-19 09:39:50,910 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 130 flow. Second operand 5 states and 193 transitions. [2024-11-19 09:39:50,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 222 flow [2024-11-19 09:39:50,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 67 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:39:50,912 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 125 flow [2024-11-19 09:39:50,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-19 09:39:50,913 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2024-11-19 09:39:50,913 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 125 flow [2024-11-19 09:39:50,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-11-19 09:39:50,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:50,914 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:39:50,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:39:50,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:50,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:50,915 INFO L85 PathProgramCache]: Analyzing trace with hash -943636262, now seen corresponding path program 1 times [2024-11-19 09:39:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:50,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029538697] [2024-11-19 09:39:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:50,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:51,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029538697] [2024-11-19 09:39:51,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029538697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:51,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:51,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:39:51,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942519832] [2024-11-19 09:39:51,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:51,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:39:51,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:51,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:39:51,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:39:51,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 75 [2024-11-19 09:39:51,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-11-19 09:39:51,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:51,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 75 [2024-11-19 09:39:51,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:51,349 INFO L124 PetriNetUnfolderBase]: 223/519 cut-off events. [2024-11-19 09:39:51,350 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-19 09:39:51,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 519 events. 223/519 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2622 event pairs, 68 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 943. Up to 362 conditions per place. [2024-11-19 09:39:51,353 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 38 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-11-19 09:39:51,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 217 flow [2024-11-19 09:39:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:39:51,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:39:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-19 09:39:51,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5146666666666667 [2024-11-19 09:39:51,355 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 125 flow. Second operand 5 states and 193 transitions. [2024-11-19 09:39:51,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 217 flow [2024-11-19 09:39:51,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 209 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:39:51,357 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 113 flow [2024-11-19 09:39:51,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-19 09:39:51,360 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2024-11-19 09:39:51,360 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 113 flow [2024-11-19 09:39:51,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-11-19 09:39:51,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:51,361 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:39:51,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:39:51,361 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:51,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1009954102, now seen corresponding path program 1 times [2024-11-19 09:39:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653127138] [2024-11-19 09:39:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:51,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653127138] [2024-11-19 09:39:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653127138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:51,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:51,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:39:51,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312062293] [2024-11-19 09:39:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:51,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:39:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:51,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:39:51,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:39:51,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-11-19 09:39:51,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-19 09:39:51,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:51,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-11-19 09:39:51,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:51,697 INFO L124 PetriNetUnfolderBase]: 235/546 cut-off events. [2024-11-19 09:39:51,697 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-19 09:39:51,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 546 events. 235/546 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2907 event pairs, 53 based on Foata normal form. 0/479 useless extension candidates. Maximal degree in co-relation 1006. Up to 283 conditions per place. [2024-11-19 09:39:51,701 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 45 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-19 09:39:51,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 243 flow [2024-11-19 09:39:51,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:39:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:39:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 212 transitions. [2024-11-19 09:39:51,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5653333333333334 [2024-11-19 09:39:51,703 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 113 flow. Second operand 5 states and 212 transitions. [2024-11-19 09:39:51,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 65 transitions, 243 flow [2024-11-19 09:39:51,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 231 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:39:51,710 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 107 flow [2024-11-19 09:39:51,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-19 09:39:51,711 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -17 predicate places. [2024-11-19 09:39:51,711 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 107 flow [2024-11-19 09:39:51,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-19 09:39:51,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:51,712 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:39:51,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:39:51,712 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:51,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1009954101, now seen corresponding path program 1 times [2024-11-19 09:39:51,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:51,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742121757] [2024-11-19 09:39:51,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:51,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:52,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:52,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742121757] [2024-11-19 09:39:52,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742121757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:52,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:52,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:39:52,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218908921] [2024-11-19 09:39:52,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:52,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:39:52,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:52,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:39:52,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:39:52,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-11-19 09:39:52,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-19 09:39:52,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:52,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-11-19 09:39:52,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:52,365 INFO L124 PetriNetUnfolderBase]: 235/495 cut-off events. [2024-11-19 09:39:52,366 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 09:39:52,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 495 events. 235/495 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2428 event pairs, 53 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 958. Up to 283 conditions per place. [2024-11-19 09:39:52,373 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 45 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-19 09:39:52,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 233 flow [2024-11-19 09:39:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:39:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:39:52,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 212 transitions. [2024-11-19 09:39:52,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5653333333333334 [2024-11-19 09:39:52,378 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 107 flow. Second operand 5 states and 212 transitions. [2024-11-19 09:39:52,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 233 flow [2024-11-19 09:39:52,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 225 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:39:52,380 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 101 flow [2024-11-19 09:39:52,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-19 09:39:52,387 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -20 predicate places. [2024-11-19 09:39:52,387 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 101 flow [2024-11-19 09:39:52,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-19 09:39:52,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:52,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:39:52,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:39:52,388 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:52,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:52,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1451164867, now seen corresponding path program 1 times [2024-11-19 09:39:52,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:52,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888650974] [2024-11-19 09:39:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:52,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:52,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:52,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888650974] [2024-11-19 09:39:52,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888650974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:52,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:52,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:39:52,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640612745] [2024-11-19 09:39:52,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:52,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:39:52,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:52,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:39:52,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:39:52,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 75 [2024-11-19 09:39:52,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 101 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-11-19 09:39:52,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:52,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 75 [2024-11-19 09:39:52,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:53,069 INFO L124 PetriNetUnfolderBase]: 296/648 cut-off events. [2024-11-19 09:39:53,070 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-19 09:39:53,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 648 events. 296/648 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2931 event pairs, 104 based on Foata normal form. 0/601 useless extension candidates. Maximal degree in co-relation 1242. Up to 386 conditions per place. [2024-11-19 09:39:53,077 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 73 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2024-11-19 09:39:53,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 381 flow [2024-11-19 09:39:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:39:53,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:39:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 329 transitions. [2024-11-19 09:39:53,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-11-19 09:39:53,079 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 101 flow. Second operand 7 states and 329 transitions. [2024-11-19 09:39:53,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 381 flow [2024-11-19 09:39:53,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 95 transitions, 357 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:39:53,089 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 153 flow [2024-11-19 09:39:53,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-11-19 09:39:53,094 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2024-11-19 09:39:53,094 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 153 flow [2024-11-19 09:39:53,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-11-19 09:39:53,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:53,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:39:53,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:39:53,094 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:53,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:53,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1450149955, now seen corresponding path program 1 times [2024-11-19 09:39:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:53,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156694608] [2024-11-19 09:39:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:53,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:53,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156694608] [2024-11-19 09:39:53,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156694608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:53,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:53,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:39:53,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788327238] [2024-11-19 09:39:53,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:53,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:39:53,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:39:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:39:53,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-19 09:39:53,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 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) [2024-11-19 09:39:53,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:53,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-19 09:39:53,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:53,991 INFO L124 PetriNetUnfolderBase]: 298/649 cut-off events. [2024-11-19 09:39:53,995 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-19 09:39:53,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 649 events. 298/649 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2987 event pairs, 104 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 1359. Up to 367 conditions per place. [2024-11-19 09:39:54,004 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 66 selfloop transitions, 13 changer transitions 6/98 dead transitions. [2024-11-19 09:39:54,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 418 flow [2024-11-19 09:39:54,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:39:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:39:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 322 transitions. [2024-11-19 09:39:54,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2024-11-19 09:39:54,010 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 153 flow. Second operand 7 states and 322 transitions. [2024-11-19 09:39:54,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 418 flow [2024-11-19 09:39:54,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:39:54,014 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 217 flow [2024-11-19 09:39:54,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-11-19 09:39:54,019 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-19 09:39:54,019 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 217 flow [2024-11-19 09:39:54,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 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) [2024-11-19 09:39:54,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:54,020 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] [2024-11-19 09:39:54,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:39:54,020 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:54,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash 266376415, now seen corresponding path program 1 times [2024-11-19 09:39:54,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:54,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785521762] [2024-11-19 09:39:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:39:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:39:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:55,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:55,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785521762] [2024-11-19 09:39:55,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785521762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:55,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:55,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:39:55,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21518373] [2024-11-19 09:39:55,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:55,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:39:55,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:39:55,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:39:55,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-19 09:39:55,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 217 flow. Second operand has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 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) [2024-11-19 09:39:55,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:55,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-19 09:39:55,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:57,029 INFO L124 PetriNetUnfolderBase]: 326/694 cut-off events. [2024-11-19 09:39:57,030 INFO L125 PetriNetUnfolderBase]: For 352/359 co-relation queries the response was YES. [2024-11-19 09:39:57,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 694 events. 326/694 cut-off events. For 352/359 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3266 event pairs, 86 based on Foata normal form. 9/636 useless extension candidates. Maximal degree in co-relation 1675. Up to 381 conditions per place. [2024-11-19 09:39:57,035 INFO L140 encePairwiseOnDemand]: 58/75 looper letters, 73 selfloop transitions, 48 changer transitions 6/140 dead transitions. [2024-11-19 09:39:57,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 746 flow [2024-11-19 09:39:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 09:39:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 09:39:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 805 transitions. [2024-11-19 09:39:57,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5366666666666666 [2024-11-19 09:39:57,040 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 217 flow. Second operand 20 states and 805 transitions. [2024-11-19 09:39:57,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 746 flow [2024-11-19 09:39:57,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 738 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:39:57,048 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 501 flow [2024-11-19 09:39:57,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=501, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2024-11-19 09:39:57,049 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2024-11-19 09:39:57,050 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 501 flow [2024-11-19 09:39:57,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 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) [2024-11-19 09:39:57,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:57,051 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] [2024-11-19 09:39:57,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:39:57,051 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:57,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash 512789855, now seen corresponding path program 2 times [2024-11-19 09:39:57,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:57,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794669778] [2024-11-19 09:39:57,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:39:57,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:57,077 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:39:57,080 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:39:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:39:58,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:39:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794669778] [2024-11-19 09:39:58,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794669778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:39:58,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:39:58,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:39:58,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536247678] [2024-11-19 09:39:58,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:39:58,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:39:58,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:39:58,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:39:58,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:39:58,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2024-11-19 09:39:58,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 501 flow. Second operand has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-11-19 09:39:58,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:39:58,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2024-11-19 09:39:58,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:39:59,483 INFO L124 PetriNetUnfolderBase]: 469/965 cut-off events. [2024-11-19 09:39:59,483 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2024-11-19 09:39:59,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 965 events. 469/965 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4663 event pairs, 145 based on Foata normal form. 6/922 useless extension candidates. Maximal degree in co-relation 2872. Up to 502 conditions per place. [2024-11-19 09:39:59,491 INFO L140 encePairwiseOnDemand]: 61/75 looper letters, 91 selfloop transitions, 39 changer transitions 30/169 dead transitions. [2024-11-19 09:39:59,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 169 transitions, 1129 flow [2024-11-19 09:39:59,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 09:39:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 09:39:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 535 transitions. [2024-11-19 09:39:59,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2024-11-19 09:39:59,496 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 501 flow. Second operand 13 states and 535 transitions. [2024-11-19 09:39:59,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 169 transitions, 1129 flow [2024-11-19 09:39:59,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 169 transitions, 1043 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-19 09:39:59,506 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 656 flow [2024-11-19 09:39:59,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=656, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2024-11-19 09:39:59,508 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 28 predicate places. [2024-11-19 09:39:59,508 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 656 flow [2024-11-19 09:39:59,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-11-19 09:39:59,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:39:59,510 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] [2024-11-19 09:39:59,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:39:59,511 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:39:59,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:39:59,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1921422159, now seen corresponding path program 3 times [2024-11-19 09:39:59,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:39:59,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819067439] [2024-11-19 09:39:59,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:39:59,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:39:59,533 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:39:59,536 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:00,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:00,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819067439] [2024-11-19 09:40:00,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819067439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:00,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:00,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:40:00,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549480429] [2024-11-19 09:40:00,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:00,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:40:00,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:40:00,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:40:00,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2024-11-19 09:40:00,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 656 flow. Second operand has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-11-19 09:40:00,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:00,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2024-11-19 09:40:00,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:01,431 INFO L124 PetriNetUnfolderBase]: 486/1024 cut-off events. [2024-11-19 09:40:01,432 INFO L125 PetriNetUnfolderBase]: For 1413/1413 co-relation queries the response was YES. [2024-11-19 09:40:01,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 1024 events. 486/1024 cut-off events. For 1413/1413 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5126 event pairs, 178 based on Foata normal form. 16/986 useless extension candidates. Maximal degree in co-relation 3289. Up to 496 conditions per place. [2024-11-19 09:40:01,442 INFO L140 encePairwiseOnDemand]: 59/75 looper letters, 99 selfloop transitions, 54 changer transitions 17/179 dead transitions. [2024-11-19 09:40:01,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 179 transitions, 1344 flow [2024-11-19 09:40:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 09:40:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 09:40:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 543 transitions. [2024-11-19 09:40:01,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.556923076923077 [2024-11-19 09:40:01,445 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 656 flow. Second operand 13 states and 543 transitions. [2024-11-19 09:40:01,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 179 transitions, 1344 flow [2024-11-19 09:40:01,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 179 transitions, 1262 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-11-19 09:40:01,459 INFO L231 Difference]: Finished difference. Result has 102 places, 124 transitions, 890 flow [2024-11-19 09:40:01,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=890, PETRI_PLACES=102, PETRI_TRANSITIONS=124} [2024-11-19 09:40:01,460 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 34 predicate places. [2024-11-19 09:40:01,462 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 124 transitions, 890 flow [2024-11-19 09:40:01,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.45454545454545) internal successors, (357), 11 states have internal predecessors, (357), 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) [2024-11-19 09:40:01,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:01,463 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] [2024-11-19 09:40:01,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:40:01,463 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:01,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1532111107, now seen corresponding path program 1 times [2024-11-19 09:40:01,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:01,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017009317] [2024-11-19 09:40:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:40:01,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:40:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:01,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:01,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017009317] [2024-11-19 09:40:01,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017009317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:01,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:01,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:40:01,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513761315] [2024-11-19 09:40:01,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:01,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:40:01,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:40:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:40:02,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-11-19 09:40:02,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 124 transitions, 890 flow. Second operand has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 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) [2024-11-19 09:40:02,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:02,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-11-19 09:40:02,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:03,588 INFO L124 PetriNetUnfolderBase]: 759/1584 cut-off events. [2024-11-19 09:40:03,591 INFO L125 PetriNetUnfolderBase]: For 2669/2714 co-relation queries the response was YES. [2024-11-19 09:40:03,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 1584 events. 759/1584 cut-off events. For 2669/2714 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9606 event pairs, 139 based on Foata normal form. 67/1553 useless extension candidates. Maximal degree in co-relation 5296. Up to 495 conditions per place. [2024-11-19 09:40:03,605 INFO L140 encePairwiseOnDemand]: 57/75 looper letters, 192 selfloop transitions, 112 changer transitions 16/332 dead transitions. [2024-11-19 09:40:03,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 332 transitions, 2723 flow [2024-11-19 09:40:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 09:40:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 09:40:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1078 transitions. [2024-11-19 09:40:03,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5528205128205128 [2024-11-19 09:40:03,610 INFO L175 Difference]: Start difference. First operand has 102 places, 124 transitions, 890 flow. Second operand 26 states and 1078 transitions. [2024-11-19 09:40:03,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 332 transitions, 2723 flow [2024-11-19 09:40:03,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 332 transitions, 2613 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-19 09:40:03,632 INFO L231 Difference]: Finished difference. Result has 137 places, 199 transitions, 1745 flow [2024-11-19 09:40:03,633 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1745, PETRI_PLACES=137, PETRI_TRANSITIONS=199} [2024-11-19 09:40:03,634 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 69 predicate places. [2024-11-19 09:40:03,634 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 199 transitions, 1745 flow [2024-11-19 09:40:03,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 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) [2024-11-19 09:40:03,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:03,634 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] [2024-11-19 09:40:03,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:40:03,635 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:03,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:03,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1531096195, now seen corresponding path program 4 times [2024-11-19 09:40:03,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:03,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848337297] [2024-11-19 09:40:03,636 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:40:03,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:03,650 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:40:03,650 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:03,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:03,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848337297] [2024-11-19 09:40:03,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848337297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:03,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:03,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:40:03,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611598880] [2024-11-19 09:40:03,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:03,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:40:03,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:03,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:40:03,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:40:03,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 75 [2024-11-19 09:40:03,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 199 transitions, 1745 flow. Second operand has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 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) [2024-11-19 09:40:03,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:03,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 75 [2024-11-19 09:40:03,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:04,617 INFO L124 PetriNetUnfolderBase]: 845/1952 cut-off events. [2024-11-19 09:40:04,617 INFO L125 PetriNetUnfolderBase]: For 4930/4964 co-relation queries the response was YES. [2024-11-19 09:40:04,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7385 conditions, 1952 events. 845/1952 cut-off events. For 4930/4964 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13122 event pairs, 81 based on Foata normal form. 78/1918 useless extension candidates. Maximal degree in co-relation 7342. Up to 434 conditions per place. [2024-11-19 09:40:04,640 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 183 selfloop transitions, 67 changer transitions 3/310 dead transitions. [2024-11-19 09:40:04,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 310 transitions, 2823 flow [2024-11-19 09:40:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:40:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:40:04,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 330 transitions. [2024-11-19 09:40:04,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-19 09:40:04,644 INFO L175 Difference]: Start difference. First operand has 137 places, 199 transitions, 1745 flow. Second operand 6 states and 330 transitions. [2024-11-19 09:40:04,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 310 transitions, 2823 flow [2024-11-19 09:40:04,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 310 transitions, 2753 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-11-19 09:40:04,686 INFO L231 Difference]: Finished difference. Result has 139 places, 219 transitions, 1955 flow [2024-11-19 09:40:04,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1955, PETRI_PLACES=139, PETRI_TRANSITIONS=219} [2024-11-19 09:40:04,688 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2024-11-19 09:40:04,688 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 219 transitions, 1955 flow [2024-11-19 09:40:04,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.333333333333336) internal successors, (236), 6 states have internal predecessors, (236), 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) [2024-11-19 09:40:04,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:04,689 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] [2024-11-19 09:40:04,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:40:04,689 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:04,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:04,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1282586751, now seen corresponding path program 5 times [2024-11-19 09:40:04,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:04,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816283492] [2024-11-19 09:40:04,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:40:04,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:04,718 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:40:04,718 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:05,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:05,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816283492] [2024-11-19 09:40:05,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816283492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:05,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:05,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:40:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618240583] [2024-11-19 09:40:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:05,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:40:05,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:40:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:40:06,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-19 09:40:06,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 219 transitions, 1955 flow. Second operand has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 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) [2024-11-19 09:40:06,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:06,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-19 09:40:06,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:07,003 INFO L124 PetriNetUnfolderBase]: 972/2161 cut-off events. [2024-11-19 09:40:07,004 INFO L125 PetriNetUnfolderBase]: For 6954/6991 co-relation queries the response was YES. [2024-11-19 09:40:07,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9278 conditions, 2161 events. 972/2161 cut-off events. For 6954/6991 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14461 event pairs, 322 based on Foata normal form. 40/2058 useless extension candidates. Maximal degree in co-relation 9234. Up to 1295 conditions per place. [2024-11-19 09:40:07,063 INFO L140 encePairwiseOnDemand]: 58/75 looper letters, 159 selfloop transitions, 97 changer transitions 11/284 dead transitions. [2024-11-19 09:40:07,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 284 transitions, 2968 flow [2024-11-19 09:40:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 09:40:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 09:40:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 757 transitions. [2024-11-19 09:40:07,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5607407407407408 [2024-11-19 09:40:07,065 INFO L175 Difference]: Start difference. First operand has 139 places, 219 transitions, 1955 flow. Second operand 18 states and 757 transitions. [2024-11-19 09:40:07,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 284 transitions, 2968 flow [2024-11-19 09:40:07,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 284 transitions, 2938 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 09:40:07,117 INFO L231 Difference]: Finished difference. Result has 157 places, 234 transitions, 2337 flow [2024-11-19 09:40:07,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2337, PETRI_PLACES=157, PETRI_TRANSITIONS=234} [2024-11-19 09:40:07,119 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 89 predicate places. [2024-11-19 09:40:07,119 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 234 transitions, 2337 flow [2024-11-19 09:40:07,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 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) [2024-11-19 09:40:07,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:07,120 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] [2024-11-19 09:40:07,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:40:07,120 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:07,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:07,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1148536671, now seen corresponding path program 6 times [2024-11-19 09:40:07,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:07,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340254725] [2024-11-19 09:40:07,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:40:07,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:07,146 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:40:07,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:07,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:07,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340254725] [2024-11-19 09:40:07,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340254725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:07,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:07,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:40:07,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38201009] [2024-11-19 09:40:07,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:07,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:40:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:07,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:40:07,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:40:08,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-19 09:40:08,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 234 transitions, 2337 flow. Second operand has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 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) [2024-11-19 09:40:08,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:08,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-19 09:40:08,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:08,743 INFO L124 PetriNetUnfolderBase]: 563/1261 cut-off events. [2024-11-19 09:40:08,743 INFO L125 PetriNetUnfolderBase]: For 4250/4256 co-relation queries the response was YES. [2024-11-19 09:40:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 1261 events. 563/1261 cut-off events. For 4250/4256 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7266 event pairs, 251 based on Foata normal form. 6/1184 useless extension candidates. Maximal degree in co-relation 5377. Up to 911 conditions per place. [2024-11-19 09:40:08,756 INFO L140 encePairwiseOnDemand]: 61/75 looper letters, 92 selfloop transitions, 38 changer transitions 7/151 dead transitions. [2024-11-19 09:40:08,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 151 transitions, 1524 flow [2024-11-19 09:40:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 09:40:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 09:40:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 521 transitions. [2024-11-19 09:40:08,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5343589743589744 [2024-11-19 09:40:08,759 INFO L175 Difference]: Start difference. First operand has 157 places, 234 transitions, 2337 flow. Second operand 13 states and 521 transitions. [2024-11-19 09:40:08,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 151 transitions, 1524 flow [2024-11-19 09:40:08,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 151 transitions, 1315 flow, removed 50 selfloop flow, removed 19 redundant places. [2024-11-19 09:40:08,782 INFO L231 Difference]: Finished difference. Result has 126 places, 132 transitions, 1028 flow [2024-11-19 09:40:08,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1028, PETRI_PLACES=126, PETRI_TRANSITIONS=132} [2024-11-19 09:40:08,783 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 58 predicate places. [2024-11-19 09:40:08,783 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 132 transitions, 1028 flow [2024-11-19 09:40:08,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.4) internal successors, (354), 10 states have internal predecessors, (354), 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) [2024-11-19 09:40:08,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:08,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:40:08,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:40:08,784 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:08,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash -994499446, now seen corresponding path program 1 times [2024-11-19 09:40:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:08,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435686984] [2024-11-19 09:40:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:40:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:40:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:09,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:09,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435686984] [2024-11-19 09:40:09,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435686984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:09,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:09,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:40:09,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205491732] [2024-11-19 09:40:09,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:09,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:40:09,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:09,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:40:09,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:40:09,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-19 09:40:09,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 132 transitions, 1028 flow. Second operand has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 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) [2024-11-19 09:40:09,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:09,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-19 09:40:09,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:10,726 INFO L124 PetriNetUnfolderBase]: 1280/2745 cut-off events. [2024-11-19 09:40:10,726 INFO L125 PetriNetUnfolderBase]: For 6331/6345 co-relation queries the response was YES. [2024-11-19 09:40:10,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10310 conditions, 2745 events. 1280/2745 cut-off events. For 6331/6345 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 16067 event pairs, 383 based on Foata normal form. 28/2603 useless extension candidates. Maximal degree in co-relation 10277. Up to 961 conditions per place. [2024-11-19 09:40:10,762 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 258 selfloop transitions, 119 changer transitions 0/390 dead transitions. [2024-11-19 09:40:10,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 390 transitions, 3332 flow [2024-11-19 09:40:10,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 09:40:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 09:40:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 890 transitions. [2024-11-19 09:40:10,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624561403508772 [2024-11-19 09:40:10,766 INFO L175 Difference]: Start difference. First operand has 126 places, 132 transitions, 1028 flow. Second operand 19 states and 890 transitions. [2024-11-19 09:40:10,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 390 transitions, 3332 flow [2024-11-19 09:40:10,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 390 transitions, 3114 flow, removed 39 selfloop flow, removed 17 redundant places. [2024-11-19 09:40:10,810 INFO L231 Difference]: Finished difference. Result has 136 places, 216 transitions, 1990 flow [2024-11-19 09:40:10,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1990, PETRI_PLACES=136, PETRI_TRANSITIONS=216} [2024-11-19 09:40:10,812 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 68 predicate places. [2024-11-19 09:40:10,812 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 216 transitions, 1990 flow [2024-11-19 09:40:10,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 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) [2024-11-19 09:40:10,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:10,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:40:10,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:40:10,813 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:10,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:10,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1791352890, now seen corresponding path program 1 times [2024-11-19 09:40:10,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:10,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57265718] [2024-11-19 09:40:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:40:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:40:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:10,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:10,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57265718] [2024-11-19 09:40:10,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57265718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:10,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:10,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:40:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721266412] [2024-11-19 09:40:10,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:10,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:40:10,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:10,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:40:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:40:11,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-11-19 09:40:11,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 216 transitions, 1990 flow. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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) [2024-11-19 09:40:11,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:11,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-11-19 09:40:11,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:12,110 INFO L124 PetriNetUnfolderBase]: 1540/3254 cut-off events. [2024-11-19 09:40:12,111 INFO L125 PetriNetUnfolderBase]: For 13721/13746 co-relation queries the response was YES. [2024-11-19 09:40:12,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14783 conditions, 3254 events. 1540/3254 cut-off events. For 13721/13746 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19257 event pairs, 289 based on Foata normal form. 100/3145 useless extension candidates. Maximal degree in co-relation 14745. Up to 1508 conditions per place. [2024-11-19 09:40:12,147 INFO L140 encePairwiseOnDemand]: 61/75 looper letters, 302 selfloop transitions, 72 changer transitions 0/390 dead transitions. [2024-11-19 09:40:12,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 390 transitions, 4457 flow [2024-11-19 09:40:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:40:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:40:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 319 transitions. [2024-11-19 09:40:12,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6076190476190476 [2024-11-19 09:40:12,149 INFO L175 Difference]: Start difference. First operand has 136 places, 216 transitions, 1990 flow. Second operand 7 states and 319 transitions. [2024-11-19 09:40:12,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 390 transitions, 4457 flow [2024-11-19 09:40:12,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 390 transitions, 4199 flow, removed 128 selfloop flow, removed 1 redundant places. [2024-11-19 09:40:12,209 INFO L231 Difference]: Finished difference. Result has 146 places, 258 transitions, 2554 flow [2024-11-19 09:40:12,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2554, PETRI_PLACES=146, PETRI_TRANSITIONS=258} [2024-11-19 09:40:12,210 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 78 predicate places. [2024-11-19 09:40:12,210 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 258 transitions, 2554 flow [2024-11-19 09:40:12,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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) [2024-11-19 09:40:12,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:12,211 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:40:12,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 09:40:12,211 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:12,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 640399930, now seen corresponding path program 2 times [2024-11-19 09:40:12,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:12,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067850997] [2024-11-19 09:40:12,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:40:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:12,230 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:40:12,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067850997] [2024-11-19 09:40:12,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067850997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:12,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:12,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:40:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135411552] [2024-11-19 09:40:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:12,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:40:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:40:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:40:13,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-19 09:40:13,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 258 transitions, 2554 flow. Second operand has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 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) [2024-11-19 09:40:13,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:13,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-19 09:40:13,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:14,897 INFO L124 PetriNetUnfolderBase]: 2529/5236 cut-off events. [2024-11-19 09:40:14,897 INFO L125 PetriNetUnfolderBase]: For 29756/29804 co-relation queries the response was YES. [2024-11-19 09:40:14,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26330 conditions, 5236 events. 2529/5236 cut-off events. For 29756/29804 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 35333 event pairs, 853 based on Foata normal form. 35/4947 useless extension candidates. Maximal degree in co-relation 26287. Up to 2944 conditions per place. [2024-11-19 09:40:14,963 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 460 selfloop transitions, 156 changer transitions 0/630 dead transitions. [2024-11-19 09:40:14,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 630 transitions, 7162 flow [2024-11-19 09:40:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 09:40:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 09:40:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1080 transitions. [2024-11-19 09:40:14,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6260869565217392 [2024-11-19 09:40:14,966 INFO L175 Difference]: Start difference. First operand has 146 places, 258 transitions, 2554 flow. Second operand 23 states and 1080 transitions. [2024-11-19 09:40:14,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 630 transitions, 7162 flow [2024-11-19 09:40:15,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 630 transitions, 6946 flow, removed 107 selfloop flow, removed 1 redundant places. [2024-11-19 09:40:15,070 INFO L231 Difference]: Finished difference. Result has 182 places, 397 transitions, 4618 flow [2024-11-19 09:40:15,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4618, PETRI_PLACES=182, PETRI_TRANSITIONS=397} [2024-11-19 09:40:15,071 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 114 predicate places. [2024-11-19 09:40:15,071 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 397 transitions, 4618 flow [2024-11-19 09:40:15,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 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) [2024-11-19 09:40:15,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:15,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:40:15,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:40:15,072 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:15,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:15,072 INFO L85 PathProgramCache]: Analyzing trace with hash 933593372, now seen corresponding path program 3 times [2024-11-19 09:40:15,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:15,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235099109] [2024-11-19 09:40:15,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:40:15,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:15,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:40:15,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:15,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:15,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235099109] [2024-11-19 09:40:15,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235099109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:15,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:15,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:40:15,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918845070] [2024-11-19 09:40:15,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:15,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:40:15,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:15,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:40:15,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:40:15,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-19 09:40:15,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 397 transitions, 4618 flow. Second operand has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 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) [2024-11-19 09:40:15,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:15,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-19 09:40:15,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:17,867 INFO L124 PetriNetUnfolderBase]: 3596/7619 cut-off events. [2024-11-19 09:40:17,867 INFO L125 PetriNetUnfolderBase]: For 73558/73622 co-relation queries the response was YES. [2024-11-19 09:40:17,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42701 conditions, 7619 events. 3596/7619 cut-off events. For 73558/73622 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 56380 event pairs, 634 based on Foata normal form. 159/7311 useless extension candidates. Maximal degree in co-relation 42642. Up to 2051 conditions per place. [2024-11-19 09:40:18,414 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 442 selfloop transitions, 494 changer transitions 2/952 dead transitions. [2024-11-19 09:40:18,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 952 transitions, 12963 flow [2024-11-19 09:40:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 09:40:18,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 09:40:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 908 transitions. [2024-11-19 09:40:18,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6053333333333333 [2024-11-19 09:40:18,416 INFO L175 Difference]: Start difference. First operand has 182 places, 397 transitions, 4618 flow. Second operand 20 states and 908 transitions. [2024-11-19 09:40:18,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 952 transitions, 12963 flow [2024-11-19 09:40:18,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 952 transitions, 12443 flow, removed 259 selfloop flow, removed 1 redundant places. [2024-11-19 09:40:18,795 INFO L231 Difference]: Finished difference. Result has 214 places, 691 transitions, 10331 flow [2024-11-19 09:40:18,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=4264, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=10331, PETRI_PLACES=214, PETRI_TRANSITIONS=691} [2024-11-19 09:40:18,796 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 146 predicate places. [2024-11-19 09:40:18,796 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 691 transitions, 10331 flow [2024-11-19 09:40:18,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.54545454545455) internal successors, (391), 11 states have internal predecessors, (391), 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) [2024-11-19 09:40:18,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:18,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:40:18,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 09:40:18,799 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:18,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1729381604, now seen corresponding path program 4 times [2024-11-19 09:40:18,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:18,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252960433] [2024-11-19 09:40:18,800 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:40:18,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:18,833 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:40:18,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:40:19,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:19,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252960433] [2024-11-19 09:40:19,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252960433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:19,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:19,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 09:40:19,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529722884] [2024-11-19 09:40:19,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:19,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:40:19,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:40:19,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:40:19,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 75 [2024-11-19 09:40:19,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 691 transitions, 10331 flow. Second operand has 12 states, 12 states have (on average 35.416666666666664) internal successors, (425), 12 states have internal predecessors, (425), 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) [2024-11-19 09:40:19,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:19,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 75 [2024-11-19 09:40:19,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:22,520 INFO L124 PetriNetUnfolderBase]: 3650/7611 cut-off events. [2024-11-19 09:40:22,520 INFO L125 PetriNetUnfolderBase]: For 103680/103750 co-relation queries the response was YES. [2024-11-19 09:40:22,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48897 conditions, 7611 events. 3650/7611 cut-off events. For 103680/103750 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 56254 event pairs, 1393 based on Foata normal form. 20/7157 useless extension candidates. Maximal degree in co-relation 48823. Up to 6461 conditions per place. [2024-11-19 09:40:22,605 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 639 selfloop transitions, 73 changer transitions 2/728 dead transitions. [2024-11-19 09:40:22,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 728 transitions, 11865 flow [2024-11-19 09:40:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 09:40:22,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 09:40:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 681 transitions. [2024-11-19 09:40:22,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675 [2024-11-19 09:40:22,608 INFO L175 Difference]: Start difference. First operand has 214 places, 691 transitions, 10331 flow. Second operand 16 states and 681 transitions. [2024-11-19 09:40:22,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 728 transitions, 11865 flow [2024-11-19 09:40:22,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 728 transitions, 10916 flow, removed 348 selfloop flow, removed 14 redundant places. [2024-11-19 09:40:22,994 INFO L231 Difference]: Finished difference. Result has 219 places, 653 transitions, 9137 flow [2024-11-19 09:40:22,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=8139, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9137, PETRI_PLACES=219, PETRI_TRANSITIONS=653} [2024-11-19 09:40:22,995 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 151 predicate places. [2024-11-19 09:40:22,995 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 653 transitions, 9137 flow [2024-11-19 09:40:22,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.416666666666664) internal successors, (425), 12 states have internal predecessors, (425), 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) [2024-11-19 09:40:22,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:22,995 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:40:22,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 09:40:22,996 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:22,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2052315041, now seen corresponding path program 1 times [2024-11-19 09:40:22,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:22,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343753412] [2024-11-19 09:40:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:40:22,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:40:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:40:23,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:23,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343753412] [2024-11-19 09:40:23,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343753412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:23,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:23,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 09:40:23,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276184718] [2024-11-19 09:40:23,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:23,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:40:23,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:40:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:40:23,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-11-19 09:40:23,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 653 transitions, 9137 flow. Second operand has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 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) [2024-11-19 09:40:23,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:23,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-11-19 09:40:23,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:27,353 INFO L124 PetriNetUnfolderBase]: 5755/11767 cut-off events. [2024-11-19 09:40:27,353 INFO L125 PetriNetUnfolderBase]: For 126370/126443 co-relation queries the response was YES. [2024-11-19 09:40:27,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69925 conditions, 11767 events. 5755/11767 cut-off events. For 126370/126443 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 93047 event pairs, 806 based on Foata normal form. 90/11094 useless extension candidates. Maximal degree in co-relation 69851. Up to 3143 conditions per place. [2024-11-19 09:40:27,499 INFO L140 encePairwiseOnDemand]: 54/75 looper letters, 550 selfloop transitions, 887 changer transitions 0/1447 dead transitions. [2024-11-19 09:40:27,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1447 transitions, 22487 flow [2024-11-19 09:40:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 09:40:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-19 09:40:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1273 transitions. [2024-11-19 09:40:27,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5657777777777778 [2024-11-19 09:40:27,502 INFO L175 Difference]: Start difference. First operand has 219 places, 653 transitions, 9137 flow. Second operand 30 states and 1273 transitions. [2024-11-19 09:40:27,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1447 transitions, 22487 flow [2024-11-19 09:40:28,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 1447 transitions, 22013 flow, removed 220 selfloop flow, removed 6 redundant places. [2024-11-19 09:40:28,186 INFO L231 Difference]: Finished difference. Result has 264 places, 1212 transitions, 20590 flow [2024-11-19 09:40:28,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=8875, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20590, PETRI_PLACES=264, PETRI_TRANSITIONS=1212} [2024-11-19 09:40:28,186 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 196 predicate places. [2024-11-19 09:40:28,187 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 1212 transitions, 20590 flow [2024-11-19 09:40:28,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 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) [2024-11-19 09:40:28,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:28,187 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:40:28,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 09:40:28,187 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:28,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:28,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1487496779, now seen corresponding path program 2 times [2024-11-19 09:40:28,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:28,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403926375] [2024-11-19 09:40:28,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:40:28,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:28,203 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:40:28,204 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:40:28,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:28,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403926375] [2024-11-19 09:40:28,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403926375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:28,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:28,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 09:40:28,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090858480] [2024-11-19 09:40:28,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:28,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:40:28,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:28,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:40:28,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:40:28,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 75 [2024-11-19 09:40:28,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 1212 transitions, 20590 flow. Second operand has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 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) [2024-11-19 09:40:28,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:28,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 75 [2024-11-19 09:40:28,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:35,589 INFO L124 PetriNetUnfolderBase]: 7246/14678 cut-off events. [2024-11-19 09:40:35,590 INFO L125 PetriNetUnfolderBase]: For 222997/223058 co-relation queries the response was YES. [2024-11-19 09:40:35,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102009 conditions, 14678 events. 7246/14678 cut-off events. For 222997/223058 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 120486 event pairs, 1224 based on Foata normal form. 84/13789 useless extension candidates. Maximal degree in co-relation 101913. Up to 4480 conditions per place. [2024-11-19 09:40:35,914 INFO L140 encePairwiseOnDemand]: 54/75 looper letters, 747 selfloop transitions, 1193 changer transitions 0/1950 dead transitions. [2024-11-19 09:40:35,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1950 transitions, 35955 flow [2024-11-19 09:40:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 09:40:35,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 09:40:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1210 transitions. [2024-11-19 09:40:35,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-11-19 09:40:35,927 INFO L175 Difference]: Start difference. First operand has 264 places, 1212 transitions, 20590 flow. Second operand 28 states and 1210 transitions. [2024-11-19 09:40:35,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1950 transitions, 35955 flow [2024-11-19 09:40:37,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1950 transitions, 34235 flow, removed 859 selfloop flow, removed 1 redundant places. [2024-11-19 09:40:37,827 INFO L231 Difference]: Finished difference. Result has 312 places, 1709 transitions, 32603 flow [2024-11-19 09:40:37,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=19392, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=716, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=32603, PETRI_PLACES=312, PETRI_TRANSITIONS=1709} [2024-11-19 09:40:37,828 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 244 predicate places. [2024-11-19 09:40:37,829 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 1709 transitions, 32603 flow [2024-11-19 09:40:37,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.18181818181818) internal successors, (376), 11 states have internal predecessors, (376), 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) [2024-11-19 09:40:37,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:37,829 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:40:37,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 09:40:37,829 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:37,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:37,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2058856147, now seen corresponding path program 3 times [2024-11-19 09:40:37,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:37,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275294748] [2024-11-19 09:40:37,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:40:37,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:37,842 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:40:37,843 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:40:38,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:38,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275294748] [2024-11-19 09:40:38,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275294748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:38,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:40:38,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:40:38,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681391543] [2024-11-19 09:40:38,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:38,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:40:38,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:38,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:40:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:40:38,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 75 [2024-11-19 09:40:38,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 1709 transitions, 32603 flow. Second operand has 10 states, 10 states have (on average 35.2) internal successors, (352), 10 states have internal predecessors, (352), 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) [2024-11-19 09:40:38,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:38,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 75 [2024-11-19 09:40:38,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:40:47,898 INFO L124 PetriNetUnfolderBase]: 8200/16707 cut-off events. [2024-11-19 09:40:47,898 INFO L125 PetriNetUnfolderBase]: For 313153/313632 co-relation queries the response was YES. [2024-11-19 09:40:48,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126252 conditions, 16707 events. 8200/16707 cut-off events. For 313153/313632 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 142032 event pairs, 1310 based on Foata normal form. 285/15850 useless extension candidates. Maximal degree in co-relation 126134. Up to 5270 conditions per place. [2024-11-19 09:40:48,218 INFO L140 encePairwiseOnDemand]: 57/75 looper letters, 1017 selfloop transitions, 1089 changer transitions 0/2226 dead transitions. [2024-11-19 09:40:48,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 2226 transitions, 46150 flow [2024-11-19 09:40:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 09:40:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 09:40:48,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 909 transitions. [2024-11-19 09:40:48,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5771428571428572 [2024-11-19 09:40:48,221 INFO L175 Difference]: Start difference. First operand has 312 places, 1709 transitions, 32603 flow. Second operand 21 states and 909 transitions. [2024-11-19 09:40:48,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 2226 transitions, 46150 flow [2024-11-19 09:40:51,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 2226 transitions, 45368 flow, removed 390 selfloop flow, removed 1 redundant places. [2024-11-19 09:40:51,433 INFO L231 Difference]: Finished difference. Result has 344 places, 1982 transitions, 42039 flow [2024-11-19 09:40:51,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=31917, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=818, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=42039, PETRI_PLACES=344, PETRI_TRANSITIONS=1982} [2024-11-19 09:40:51,434 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 276 predicate places. [2024-11-19 09:40:51,435 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 1982 transitions, 42039 flow [2024-11-19 09:40:51,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.2) internal successors, (352), 10 states have internal predecessors, (352), 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) [2024-11-19 09:40:51,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:40:51,435 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:40:51,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 09:40:51,435 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:40:51,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:40:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash -129888623, now seen corresponding path program 4 times [2024-11-19 09:40:51,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:40:51,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756878749] [2024-11-19 09:40:51,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:40:51,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:40:51,450 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:40:51,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 09:40:51,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:40:51,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756878749] [2024-11-19 09:40:51,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756878749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:40:51,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174083504] [2024-11-19 09:40:51,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:40:51,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:40:51,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:40:51,796 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) [2024-11-19 09:40:51,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:40:51,893 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:40:51,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:40:51,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 09:40:51,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:40:51,967 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 13 treesize of output 9 [2024-11-19 09:40:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:40:52,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:40:52,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174083504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:40:52,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:40:52,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2024-11-19 09:40:52,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638273686] [2024-11-19 09:40:52,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:40:52,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:40:52,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:40:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:40:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:40:52,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 75 [2024-11-19 09:40:52,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 1982 transitions, 42039 flow. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:40:52,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:40:52,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 75 [2024-11-19 09:40:52,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:41:00,887 INFO L124 PetriNetUnfolderBase]: 8294/17479 cut-off events. [2024-11-19 09:41:00,887 INFO L125 PetriNetUnfolderBase]: For 369352/369891 co-relation queries the response was YES. [2024-11-19 09:41:01,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136377 conditions, 17479 events. 8294/17479 cut-off events. For 369352/369891 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 152115 event pairs, 422 based on Foata normal form. 306/16639 useless extension candidates. Maximal degree in co-relation 136246. Up to 4348 conditions per place. [2024-11-19 09:41:01,177 INFO L140 encePairwiseOnDemand]: 67/75 looper letters, 1488 selfloop transitions, 725 changer transitions 0/2593 dead transitions. [2024-11-19 09:41:01,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 2593 transitions, 57836 flow [2024-11-19 09:41:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:41:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:41:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 382 transitions. [2024-11-19 09:41:01,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7276190476190476 [2024-11-19 09:41:01,179 INFO L175 Difference]: Start difference. First operand has 344 places, 1982 transitions, 42039 flow. Second operand 7 states and 382 transitions. [2024-11-19 09:41:01,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 2593 transitions, 57836 flow [2024-11-19 09:41:05,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 2593 transitions, 57180 flow, removed 327 selfloop flow, removed 1 redundant places. [2024-11-19 09:41:06,029 INFO L231 Difference]: Finished difference. Result has 350 places, 2077 transitions, 45202 flow [2024-11-19 09:41:06,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=41605, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=631, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45202, PETRI_PLACES=350, PETRI_TRANSITIONS=2077} [2024-11-19 09:41:06,032 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 282 predicate places. [2024-11-19 09:41:06,032 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 2077 transitions, 45202 flow [2024-11-19 09:41:06,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:41:06,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:41:06,033 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:41:06,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:41:06,233 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,SelfDestructingSolverStorable24 [2024-11-19 09:41:06,234 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting workerErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:41:06,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:41:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1016593183, now seen corresponding path program 5 times [2024-11-19 09:41:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:41:06,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505363162] [2024-11-19 09:41:06,234 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:41:06,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:41:06,247 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:41:06,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:41:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:41:06,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:41:06,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505363162] [2024-11-19 09:41:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505363162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:41:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953679003] [2024-11-19 09:41:06,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:41:06,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:41:06,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:41:06,605 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) [2024-11-19 09:41:06,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:41:06,699 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:41:06,700 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:41:06,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 09:41:06,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:41:06,787 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 13 treesize of output 9 [2024-11-19 09:41:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:41:06,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:41:06,835 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 18 treesize of output 12 [2024-11-19 09:41:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:41:06,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953679003] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:41:06,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:41:06,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 5] total 21 [2024-11-19 09:41:06,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081031994] [2024-11-19 09:41:06,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:41:06,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:41:06,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:41:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:41:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-19 09:41:06,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 75 [2024-11-19 09:41:06,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 2077 transitions, 45202 flow. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:41:06,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:41:06,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 75 [2024-11-19 09:41:06,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:41:09,613 INFO L124 PetriNetUnfolderBase]: 1882/4453 cut-off events. [2024-11-19 09:41:09,613 INFO L125 PetriNetUnfolderBase]: For 118947/119022 co-relation queries the response was YES. [2024-11-19 09:41:09,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37182 conditions, 4453 events. 1882/4453 cut-off events. For 118947/119022 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 31706 event pairs, 356 based on Foata normal form. 107/4328 useless extension candidates. Maximal degree in co-relation 37049. Up to 1890 conditions per place. [2024-11-19 09:41:09,694 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 414 selfloop transitions, 420 changer transitions 0/965 dead transitions. [2024-11-19 09:41:09,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 965 transitions, 23301 flow [2024-11-19 09:41:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:41:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:41:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 294 transitions. [2024-11-19 09:41:09,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6533333333333333 [2024-11-19 09:41:09,695 INFO L175 Difference]: Start difference. First operand has 350 places, 2077 transitions, 45202 flow. Second operand 6 states and 294 transitions. [2024-11-19 09:41:09,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 965 transitions, 23301 flow [2024-11-19 09:41:10,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 965 transitions, 20221 flow, removed 407 selfloop flow, removed 44 redundant places. [2024-11-19 09:41:10,408 INFO L231 Difference]: Finished difference. Result has 276 places, 951 transitions, 19307 flow [2024-11-19 09:41:10,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=18154, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=19307, PETRI_PLACES=276, PETRI_TRANSITIONS=951} [2024-11-19 09:41:10,409 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 208 predicate places. [2024-11-19 09:41:10,409 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 951 transitions, 19307 flow [2024-11-19 09:41:10,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:41:10,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:41:10,410 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:41:10,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:41:10,610 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,SelfDestructingSolverStorable25 [2024-11-19 09:41:10,611 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting workerErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (and 35 more)] === [2024-11-19 09:41:10,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:41:10,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1555181240, now seen corresponding path program 1 times [2024-11-19 09:41:10,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:41:10,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263867013] [2024-11-19 09:41:10,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:41:10,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:41:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:41:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:41:11,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:41:11,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263867013] [2024-11-19 09:41:11,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263867013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:41:11,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523596546] [2024-11-19 09:41:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:41:11,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:41:11,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:41:11,066 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) [2024-11-19 09:41:11,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:41:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:41:11,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 09:41:11,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:41:11,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1