./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 18:50:57,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 18:50:57,772 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 18:50:57,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 18:50:57,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 18:50:57,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 18:50:57,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 18:50:57,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 18:50:57,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 18:50:57,813 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 18:50:57,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 18:50:57,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 18:50:57,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 18:50:57,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 18:50:57,815 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 18:50:57,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 18:50:57,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 18:50:57,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 18:50:57,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 18:50:57,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 18:50:57,821 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 18:50:57,822 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 18:50:57,823 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 18:50:57,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 18:50:57,823 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 18:50:57,823 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 18:50:57,824 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 18:50:57,824 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 18:50:57,824 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 18:50:57,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 18:50:57,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 18:50:57,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 18:50:57,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 18:50:57,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:50:57,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 18:50:57,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 18:50:57,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 18:50:57,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 18:50:57,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 18:50:57,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 18:50:57,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 18:50:57,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 18:50:57,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2024-10-24 18:50:58,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 18:50:58,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 18:50:58,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 18:50:58,093 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 18:50:58,094 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 18:50:58,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-24 18:50:59,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 18:50:59,713 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 18:50:59,714 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-24 18:50:59,736 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b408f9f8a/114d0a03ac5e428bb84ec46a6b84ef63/FLAG70ae28140 [2024-10-24 18:51:00,036 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b408f9f8a/114d0a03ac5e428bb84ec46a6b84ef63 [2024-10-24 18:51:00,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 18:51:00,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 18:51:00,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 18:51:00,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 18:51:00,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 18:51:00,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5462ef50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00, skipping insertion in model container [2024-10-24 18:51:00,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,104 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 18:51:00,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:51:00,590 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 18:51:00,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:51:00,746 INFO L204 MainTranslator]: Completed translation [2024-10-24 18:51:00,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00 WrapperNode [2024-10-24 18:51:00,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 18:51:00,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 18:51:00,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 18:51:00,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 18:51:00,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,824 INFO L138 Inliner]: procedures = 277, calls = 32, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 157 [2024-10-24 18:51:00,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 18:51:00,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 18:51:00,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 18:51:00,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 18:51:00,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,872 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-10-24 18:51:00,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 18:51:00,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 18:51:00,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 18:51:00,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 18:51:00,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (1/1) ... [2024-10-24 18:51:00,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:51:00,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 18:51:00,940 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) [2024-10-24 18:51:00,943 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 [2024-10-24 18:51:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-24 18:51:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-24 18:51:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-24 18:51:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-24 18:51:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 18:51:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 18:51:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 18:51:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 18:51:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 18:51:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 18:51:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 18:51:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 18:51:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 18:51:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 18:51:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 18:51:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 18:51:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 18:51:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 18:51:00,997 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 18:51:01,138 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 18:51:01,141 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 18:51:01,400 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 18:51:01,401 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 18:51:01,596 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 18:51:01,596 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 18:51:01,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:51:01 BoogieIcfgContainer [2024-10-24 18:51:01,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 18:51:01,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 18:51:01,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 18:51:01,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 18:51:01,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:51:00" (1/3) ... [2024-10-24 18:51:01,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bf994c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:51:01, skipping insertion in model container [2024-10-24 18:51:01,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:00" (2/3) ... [2024-10-24 18:51:01,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37bf994c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:51:01, skipping insertion in model container [2024-10-24 18:51:01,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:51:01" (3/3) ... [2024-10-24 18:51:01,608 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2024-10-24 18:51:01,623 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 18:51:01,624 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-24 18:51:01,624 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 18:51:01,692 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 18:51:01,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 55 transitions, 124 flow [2024-10-24 18:51:01,771 INFO L124 PetriNetUnfolderBase]: 9/53 cut-off events. [2024-10-24 18:51:01,772 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 18:51:01,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 9/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 144 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2024-10-24 18:51:01,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 55 transitions, 124 flow [2024-10-24 18:51:01,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 52 transitions, 116 flow [2024-10-24 18:51:01,793 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 18:51:01,802 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;@1d5d3563, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 18:51:01,804 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-24 18:51:01,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 18:51:01,818 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-24 18:51:01,818 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 18:51:01,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:01,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:01,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:01,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:01,824 INFO L85 PathProgramCache]: Analyzing trace with hash 493317020, now seen corresponding path program 1 times [2024-10-24 18:51:01,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:01,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93299277] [2024-10-24 18:51:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:01,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:02,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93299277] [2024-10-24 18:51:02,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93299277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:02,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:02,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:51:02,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417642777] [2024-10-24 18:51:02,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:02,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:51:02,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:51:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:51:02,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:02,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-24 18:51:02,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:02,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:02,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:02,687 INFO L124 PetriNetUnfolderBase]: 454/883 cut-off events. [2024-10-24 18:51:02,687 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-24 18:51:02,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 883 events. 454/883 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4518 event pairs, 242 based on Foata normal form. 90/851 useless extension candidates. Maximal degree in co-relation 1570. Up to 512 conditions per place. [2024-10-24 18:51:02,696 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 43 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-10-24 18:51:02,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 227 flow [2024-10-24 18:51:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:51:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 18:51:02,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-24 18:51:02,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-10-24 18:51:02,711 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 116 flow. Second operand 4 states and 117 transitions. [2024-10-24 18:51:02,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 227 flow [2024-10-24 18:51:02,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 217 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 18:51:02,718 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 100 flow [2024-10-24 18:51:02,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-10-24 18:51:02,725 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2024-10-24 18:51:02,725 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 100 flow [2024-10-24 18:51:02,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-24 18:51:02,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:02,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:02,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 18:51:02,726 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:02,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash 493317021, now seen corresponding path program 1 times [2024-10-24 18:51:02,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:02,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033442237] [2024-10-24 18:51:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:02,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:02,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033442237] [2024-10-24 18:51:02,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033442237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:02,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:02,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:51:02,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077759161] [2024-10-24 18:51:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:02,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 18:51:02,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:02,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 18:51:02,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:51:02,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:02,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-24 18:51:02,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:02,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:02,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:03,298 INFO L124 PetriNetUnfolderBase]: 750/1388 cut-off events. [2024-10-24 18:51:03,299 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-24 18:51:03,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1388 events. 750/1388 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7425 event pairs, 125 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 807. Up to 848 conditions per place. [2024-10-24 18:51:03,308 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 87 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-10-24 18:51:03,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 423 flow [2024-10-24 18:51:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 18:51:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 18:51:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-10-24 18:51:03,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2024-10-24 18:51:03,313 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 100 flow. Second operand 6 states and 194 transitions. [2024-10-24 18:51:03,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 423 flow [2024-10-24 18:51:03,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 108 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 18:51:03,318 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 153 flow [2024-10-24 18:51:03,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-10-24 18:51:03,319 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-10-24 18:51:03,319 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 153 flow [2024-10-24 18:51:03,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-24 18:51:03,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:03,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:03,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 18:51:03,320 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:03,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash -860785579, now seen corresponding path program 1 times [2024-10-24 18:51:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105210572] [2024-10-24 18:51:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:03,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:03,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105210572] [2024-10-24 18:51:03,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105210572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:03,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:03,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:51:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428689511] [2024-10-24 18:51:03,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:03,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:51:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:51:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:51:03,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:03,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-24 18:51:03,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:03,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:03,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:03,599 INFO L124 PetriNetUnfolderBase]: 663/1274 cut-off events. [2024-10-24 18:51:03,600 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-10-24 18:51:03,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1274 events. 663/1274 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6563 event pairs, 176 based on Foata normal form. 34/1197 useless extension candidates. Maximal degree in co-relation 2591. Up to 721 conditions per place. [2024-10-24 18:51:03,608 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 67 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2024-10-24 18:51:03,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 376 flow [2024-10-24 18:51:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:51:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 18:51:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-10-24 18:51:03,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-10-24 18:51:03,613 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 153 flow. Second operand 5 states and 160 transitions. [2024-10-24 18:51:03,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 376 flow [2024-10-24 18:51:03,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:03,619 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 161 flow [2024-10-24 18:51:03,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-10-24 18:51:03,620 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2024-10-24 18:51:03,621 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 161 flow [2024-10-24 18:51:03,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-10-24 18:51:03,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:03,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:03,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 18:51:03,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:03,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash -12933470, now seen corresponding path program 1 times [2024-10-24 18:51:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174180252] [2024-10-24 18:51:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:03,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174180252] [2024-10-24 18:51:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174180252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:03,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:03,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:51:03,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285379827] [2024-10-24 18:51:03,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:03,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:51:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:03,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:51:03,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:51:03,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:03,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:51:03,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:03,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:03,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:03,997 INFO L124 PetriNetUnfolderBase]: 971/1835 cut-off events. [2024-10-24 18:51:03,997 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-10-24 18:51:04,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 1835 events. 971/1835 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9682 event pairs, 464 based on Foata normal form. 0/1713 useless extension candidates. Maximal degree in co-relation 3355. Up to 1051 conditions per place. [2024-10-24 18:51:04,010 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 73 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2024-10-24 18:51:04,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 429 flow [2024-10-24 18:51:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:51:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 18:51:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-24 18:51:04,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6318181818181818 [2024-10-24 18:51:04,015 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 161 flow. Second operand 4 states and 139 transitions. [2024-10-24 18:51:04,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 429 flow [2024-10-24 18:51:04,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 429 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 18:51:04,021 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 197 flow [2024-10-24 18:51:04,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-10-24 18:51:04,023 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-10-24 18:51:04,024 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 197 flow [2024-10-24 18:51:04,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:51:04,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:04,024 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:04,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 18:51:04,025 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:04,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:04,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1853953479, now seen corresponding path program 1 times [2024-10-24 18:51:04,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:04,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977735024] [2024-10-24 18:51:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:04,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:04,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:04,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977735024] [2024-10-24 18:51:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977735024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:04,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:51:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168683329] [2024-10-24 18:51:04,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:04,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:51:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:51:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:51:04,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:04,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-24 18:51:04,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:04,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:04,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:04,329 INFO L124 PetriNetUnfolderBase]: 1096/2029 cut-off events. [2024-10-24 18:51:04,329 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2024-10-24 18:51:04,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 2029 events. 1096/2029 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10881 event pairs, 514 based on Foata normal form. 22/1932 useless extension candidates. Maximal degree in co-relation 4011. Up to 1284 conditions per place. [2024-10-24 18:51:04,341 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 62 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-10-24 18:51:04,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 78 transitions, 397 flow [2024-10-24 18:51:04,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:51:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 18:51:04,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-24 18:51:04,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-10-24 18:51:04,343 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 197 flow. Second operand 3 states and 106 transitions. [2024-10-24 18:51:04,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 78 transitions, 397 flow [2024-10-24 18:51:04,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 391 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:04,351 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 203 flow [2024-10-24 18:51:04,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-10-24 18:51:04,352 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2024-10-24 18:51:04,352 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 203 flow [2024-10-24 18:51:04,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-24 18:51:04,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:04,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:04,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 18:51:04,353 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:04,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:04,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1588015164, now seen corresponding path program 1 times [2024-10-24 18:51:04,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:04,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690376621] [2024-10-24 18:51:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:04,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:04,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:04,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690376621] [2024-10-24 18:51:04,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690376621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:04,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:04,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:51:04,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936958070] [2024-10-24 18:51:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:04,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:51:04,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:51:04,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:51:04,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:04,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-24 18:51:04,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:04,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:04,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:04,601 INFO L124 PetriNetUnfolderBase]: 1006/1856 cut-off events. [2024-10-24 18:51:04,602 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2024-10-24 18:51:04,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4370 conditions, 1856 events. 1006/1856 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9913 event pairs, 361 based on Foata normal form. 14/1750 useless extension candidates. Maximal degree in co-relation 3871. Up to 1410 conditions per place. [2024-10-24 18:51:04,615 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 49 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-10-24 18:51:04,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 313 flow [2024-10-24 18:51:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:51:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 18:51:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-24 18:51:04,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-10-24 18:51:04,617 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 203 flow. Second operand 3 states and 96 transitions. [2024-10-24 18:51:04,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 313 flow [2024-10-24 18:51:04,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 303 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-24 18:51:04,621 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 180 flow [2024-10-24 18:51:04,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-10-24 18:51:04,622 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2024-10-24 18:51:04,622 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 180 flow [2024-10-24 18:51:04,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-24 18:51:04,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:04,623 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:04,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 18:51:04,623 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:04,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1819283733, now seen corresponding path program 1 times [2024-10-24 18:51:04,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:04,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708409617] [2024-10-24 18:51:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:04,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:04,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:04,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708409617] [2024-10-24 18:51:04,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708409617] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 18:51:04,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337181574] [2024-10-24 18:51:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:04,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 18:51:04,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 18:51:04,881 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) [2024-10-24 18:51:04,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 18:51:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:04,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 18:51:04,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:05,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:51:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:05,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337181574] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:51:05,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 18:51:05,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-10-24 18:51:05,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667799827] [2024-10-24 18:51:05,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 18:51:05,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 18:51:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 18:51:05,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-24 18:51:05,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:05,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 180 flow. Second operand has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 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) [2024-10-24 18:51:05,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:05,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:05,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:07,332 INFO L124 PetriNetUnfolderBase]: 4128/7722 cut-off events. [2024-10-24 18:51:07,333 INFO L125 PetriNetUnfolderBase]: For 2485/2485 co-relation queries the response was YES. [2024-10-24 18:51:07,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17864 conditions, 7722 events. 4128/7722 cut-off events. For 2485/2485 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 50405 event pairs, 309 based on Foata normal form. 192/7404 useless extension candidates. Maximal degree in co-relation 7413. Up to 1423 conditions per place. [2024-10-24 18:51:07,391 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 327 selfloop transitions, 45 changer transitions 0/386 dead transitions. [2024-10-24 18:51:07,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 386 transitions, 1892 flow [2024-10-24 18:51:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 18:51:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-24 18:51:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 685 transitions. [2024-10-24 18:51:07,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6227272727272727 [2024-10-24 18:51:07,394 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 180 flow. Second operand 20 states and 685 transitions. [2024-10-24 18:51:07,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 386 transitions, 1892 flow [2024-10-24 18:51:07,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 386 transitions, 1850 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-10-24 18:51:07,408 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 592 flow [2024-10-24 18:51:07,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=592, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-10-24 18:51:07,409 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2024-10-24 18:51:07,409 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 592 flow [2024-10-24 18:51:07,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 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) [2024-10-24 18:51:07,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:07,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:07,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 18:51:07,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 18:51:07,615 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:07,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:07,615 INFO L85 PathProgramCache]: Analyzing trace with hash 577278495, now seen corresponding path program 1 times [2024-10-24 18:51:07,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:07,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061918554] [2024-10-24 18:51:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:07,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:07,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:07,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061918554] [2024-10-24 18:51:07,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061918554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:07,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:07,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:51:07,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016875950] [2024-10-24 18:51:07,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:07,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:51:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:07,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:51:07,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:51:07,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:07,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-10-24 18:51:07,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:07,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:07,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:08,108 INFO L124 PetriNetUnfolderBase]: 1833/3828 cut-off events. [2024-10-24 18:51:08,108 INFO L125 PetriNetUnfolderBase]: For 2279/2279 co-relation queries the response was YES. [2024-10-24 18:51:08,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9379 conditions, 3828 events. 1833/3828 cut-off events. For 2279/2279 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 22279 event pairs, 372 based on Foata normal form. 234/3906 useless extension candidates. Maximal degree in co-relation 9177. Up to 2311 conditions per place. [2024-10-24 18:51:08,139 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 70 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-10-24 18:51:08,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 609 flow [2024-10-24 18:51:08,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:51:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 18:51:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-10-24 18:51:08,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2024-10-24 18:51:08,141 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 592 flow. Second operand 3 states and 94 transitions. [2024-10-24 18:51:08,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 609 flow [2024-10-24 18:51:08,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 89 transitions, 561 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-10-24 18:51:08,158 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 389 flow [2024-10-24 18:51:08,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-10-24 18:51:08,162 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2024-10-24 18:51:08,162 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 389 flow [2024-10-24 18:51:08,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-10-24 18:51:08,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:08,162 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] [2024-10-24 18:51:08,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 18:51:08,163 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:08,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:08,163 INFO L85 PathProgramCache]: Analyzing trace with hash 716793377, now seen corresponding path program 1 times [2024-10-24 18:51:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:08,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555668635] [2024-10-24 18:51:08,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:08,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:08,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555668635] [2024-10-24 18:51:08,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555668635] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:08,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:08,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:51:08,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296572869] [2024-10-24 18:51:08,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:08,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 18:51:08,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:08,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 18:51:08,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:51:08,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:08,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-10-24 18:51:08,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:08,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:08,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:08,676 INFO L124 PetriNetUnfolderBase]: 1838/3730 cut-off events. [2024-10-24 18:51:08,676 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2024-10-24 18:51:08,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9363 conditions, 3730 events. 1838/3730 cut-off events. For 1489/1489 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 21430 event pairs, 1002 based on Foata normal form. 0/3605 useless extension candidates. Maximal degree in co-relation 7894. Up to 2166 conditions per place. [2024-10-24 18:51:08,706 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 56 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-10-24 18:51:08,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 565 flow [2024-10-24 18:51:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:51:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 18:51:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-10-24 18:51:08,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44363636363636366 [2024-10-24 18:51:08,708 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 389 flow. Second operand 5 states and 122 transitions. [2024-10-24 18:51:08,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 565 flow [2024-10-24 18:51:08,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:08,717 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 419 flow [2024-10-24 18:51:08,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-10-24 18:51:08,719 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 35 predicate places. [2024-10-24 18:51:08,721 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 419 flow [2024-10-24 18:51:08,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-10-24 18:51:08,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:08,721 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] [2024-10-24 18:51:08,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 18:51:08,722 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:08,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash 5313600, now seen corresponding path program 1 times [2024-10-24 18:51:08,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:08,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837395894] [2024-10-24 18:51:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:08,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:08,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:08,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837395894] [2024-10-24 18:51:08,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837395894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:08,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:08,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 18:51:08,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826751400] [2024-10-24 18:51:08,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:08,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 18:51:08,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:08,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 18:51:08,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 18:51:09,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:09,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 419 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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) [2024-10-24 18:51:09,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:09,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:09,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:09,571 INFO L124 PetriNetUnfolderBase]: 1961/3997 cut-off events. [2024-10-24 18:51:09,572 INFO L125 PetriNetUnfolderBase]: For 2197/2197 co-relation queries the response was YES. [2024-10-24 18:51:09,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 3997 events. 1961/3997 cut-off events. For 2197/2197 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 23139 event pairs, 461 based on Foata normal form. 0/3837 useless extension candidates. Maximal degree in co-relation 8547. Up to 2936 conditions per place. [2024-10-24 18:51:09,593 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 110 selfloop transitions, 9 changer transitions 0/132 dead transitions. [2024-10-24 18:51:09,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 132 transitions, 831 flow [2024-10-24 18:51:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 18:51:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 18:51:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-10-24 18:51:09,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49772727272727274 [2024-10-24 18:51:09,596 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 419 flow. Second operand 8 states and 219 transitions. [2024-10-24 18:51:09,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 132 transitions, 831 flow [2024-10-24 18:51:09,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 132 transitions, 787 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 18:51:09,606 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 442 flow [2024-10-24 18:51:09,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=442, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-10-24 18:51:09,606 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2024-10-24 18:51:09,606 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 442 flow [2024-10-24 18:51:09,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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) [2024-10-24 18:51:09,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:09,607 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:09,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 18:51:09,607 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:09,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1334438469, now seen corresponding path program 1 times [2024-10-24 18:51:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:09,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133116653] [2024-10-24 18:51:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:09,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:09,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:09,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133116653] [2024-10-24 18:51:09,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133116653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:09,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:09,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:51:09,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491852780] [2024-10-24 18:51:09,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:09,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:51:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:09,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:51:09,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:51:09,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:09,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-24 18:51:09,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:09,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:09,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:10,232 INFO L124 PetriNetUnfolderBase]: 2879/6069 cut-off events. [2024-10-24 18:51:10,232 INFO L125 PetriNetUnfolderBase]: For 3090/3090 co-relation queries the response was YES. [2024-10-24 18:51:10,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15027 conditions, 6069 events. 2879/6069 cut-off events. For 3090/3090 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 40441 event pairs, 1373 based on Foata normal form. 137/5984 useless extension candidates. Maximal degree in co-relation 13000. Up to 3403 conditions per place. [2024-10-24 18:51:10,271 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 124 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-10-24 18:51:10,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 140 transitions, 1054 flow [2024-10-24 18:51:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:51:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 18:51:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-10-24 18:51:10,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-10-24 18:51:10,273 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 442 flow. Second operand 3 states and 107 transitions. [2024-10-24 18:51:10,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 140 transitions, 1054 flow [2024-10-24 18:51:10,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 140 transitions, 1038 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 18:51:10,288 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 445 flow [2024-10-24 18:51:10,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-10-24 18:51:10,288 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2024-10-24 18:51:10,289 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 445 flow [2024-10-24 18:51:10,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-24 18:51:10,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:10,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:10,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 18:51:10,290 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:10,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash 717766388, now seen corresponding path program 1 times [2024-10-24 18:51:10,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:10,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386627159] [2024-10-24 18:51:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:10,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386627159] [2024-10-24 18:51:10,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386627159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:10,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:10,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:51:10,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899870322] [2024-10-24 18:51:10,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:10,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 18:51:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:10,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 18:51:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:51:10,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:10,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 445 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-10-24 18:51:10,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:10,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:10,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:10,993 INFO L124 PetriNetUnfolderBase]: 3194/6487 cut-off events. [2024-10-24 18:51:10,993 INFO L125 PetriNetUnfolderBase]: For 4314/4314 co-relation queries the response was YES. [2024-10-24 18:51:11,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17920 conditions, 6487 events. 3194/6487 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 42420 event pairs, 475 based on Foata normal form. 105/6410 useless extension candidates. Maximal degree in co-relation 14840. Up to 2632 conditions per place. [2024-10-24 18:51:11,030 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 109 selfloop transitions, 10 changer transitions 0/133 dead transitions. [2024-10-24 18:51:11,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 133 transitions, 930 flow [2024-10-24 18:51:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:51:11,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 18:51:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-10-24 18:51:11,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5527272727272727 [2024-10-24 18:51:11,032 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 445 flow. Second operand 5 states and 152 transitions. [2024-10-24 18:51:11,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 133 transitions, 930 flow [2024-10-24 18:51:11,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 923 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:11,049 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 519 flow [2024-10-24 18:51:11,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-10-24 18:51:11,050 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-10-24 18:51:11,050 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 519 flow [2024-10-24 18:51:11,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-10-24 18:51:11,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:11,051 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, 1, 1, 1, 1] [2024-10-24 18:51:11,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 18:51:11,051 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:11,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:11,052 INFO L85 PathProgramCache]: Analyzing trace with hash 831181812, now seen corresponding path program 1 times [2024-10-24 18:51:11,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:11,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471538036] [2024-10-24 18:51:11,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:11,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:11,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:11,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471538036] [2024-10-24 18:51:11,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471538036] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:11,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:11,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 18:51:11,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225956873] [2024-10-24 18:51:11,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:11,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 18:51:11,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:11,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 18:51:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-24 18:51:11,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:11,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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) [2024-10-24 18:51:11,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:11,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:11,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:12,938 INFO L124 PetriNetUnfolderBase]: 5347/10919 cut-off events. [2024-10-24 18:51:12,939 INFO L125 PetriNetUnfolderBase]: For 10085/10085 co-relation queries the response was YES. [2024-10-24 18:51:12,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30633 conditions, 10919 events. 5347/10919 cut-off events. For 10085/10085 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 78445 event pairs, 1255 based on Foata normal form. 0/10666 useless extension candidates. Maximal degree in co-relation 25008. Up to 4690 conditions per place. [2024-10-24 18:51:13,021 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 201 selfloop transitions, 22 changer transitions 0/237 dead transitions. [2024-10-24 18:51:13,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 237 transitions, 1743 flow [2024-10-24 18:51:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 18:51:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 18:51:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2024-10-24 18:51:13,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-24 18:51:13,023 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 519 flow. Second operand 10 states and 300 transitions. [2024-10-24 18:51:13,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 237 transitions, 1743 flow [2024-10-24 18:51:13,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 237 transitions, 1741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:13,076 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 714 flow [2024-10-24 18:51:13,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=714, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2024-10-24 18:51:13,078 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 58 predicate places. [2024-10-24 18:51:13,078 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 714 flow [2024-10-24 18:51:13,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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) [2024-10-24 18:51:13,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:13,079 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:13,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 18:51:13,079 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:13,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:13,080 INFO L85 PathProgramCache]: Analyzing trace with hash -496639167, now seen corresponding path program 1 times [2024-10-24 18:51:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:13,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383128979] [2024-10-24 18:51:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:13,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:13,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:13,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383128979] [2024-10-24 18:51:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383128979] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 18:51:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719529510] [2024-10-24 18:51:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:13,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 18:51:13,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 18:51:13,147 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) [2024-10-24 18:51:13,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 18:51:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:13,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 18:51:13,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 18:51:13,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:13,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719529510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:13,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 18:51:13,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-24 18:51:13,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129306046] [2024-10-24 18:51:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:13,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:51:13,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:13,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:51:13,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:51:13,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:13,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-10-24 18:51:13,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:13,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:13,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:14,528 INFO L124 PetriNetUnfolderBase]: 5346/10809 cut-off events. [2024-10-24 18:51:14,528 INFO L125 PetriNetUnfolderBase]: For 13005/13005 co-relation queries the response was YES. [2024-10-24 18:51:14,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31825 conditions, 10809 events. 5346/10809 cut-off events. For 13005/13005 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 78298 event pairs, 4242 based on Foata normal form. 37/10575 useless extension candidates. Maximal degree in co-relation 26059. Up to 9151 conditions per place. [2024-10-24 18:51:14,607 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 88 selfloop transitions, 1 changer transitions 2/103 dead transitions. [2024-10-24 18:51:14,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 892 flow [2024-10-24 18:51:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:51:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 18:51:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-24 18:51:14,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-10-24 18:51:14,609 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 714 flow. Second operand 3 states and 80 transitions. [2024-10-24 18:51:14,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 892 flow [2024-10-24 18:51:14,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 103 transitions, 876 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-24 18:51:14,668 INFO L231 Difference]: Finished difference. Result has 106 places, 101 transitions, 693 flow [2024-10-24 18:51:14,668 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=693, PETRI_PLACES=106, PETRI_TRANSITIONS=101} [2024-10-24 18:51:14,669 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 56 predicate places. [2024-10-24 18:51:14,670 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 101 transitions, 693 flow [2024-10-24 18:51:14,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-10-24 18:51:14,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:14,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:14,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 18:51:14,871 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,SelfDestructingSolverStorable13 [2024-10-24 18:51:14,871 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:14,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:14,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1260113550, now seen corresponding path program 1 times [2024-10-24 18:51:14,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:14,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890039450] [2024-10-24 18:51:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:14,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890039450] [2024-10-24 18:51:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890039450] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 18:51:15,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348507095] [2024-10-24 18:51:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:15,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 18:51:15,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 18:51:15,199 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) [2024-10-24 18:51:15,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 18:51:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:15,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 18:51:15,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:15,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:51:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:15,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348507095] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:51:15,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 18:51:15,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-10-24 18:51:15,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955025651] [2024-10-24 18:51:15,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 18:51:15,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 18:51:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:15,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 18:51:15,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-10-24 18:51:16,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:16,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 101 transitions, 693 flow. Second operand has 17 states, 17 states have (on average 20.41176470588235) internal successors, (347), 17 states have internal predecessors, (347), 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) [2024-10-24 18:51:16,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:16,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:16,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:19,078 INFO L124 PetriNetUnfolderBase]: 10595/21327 cut-off events. [2024-10-24 18:51:19,079 INFO L125 PetriNetUnfolderBase]: For 24206/24206 co-relation queries the response was YES. [2024-10-24 18:51:19,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62305 conditions, 21327 events. 10595/21327 cut-off events. For 24206/24206 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 168474 event pairs, 1866 based on Foata normal form. 181/20981 useless extension candidates. Maximal degree in co-relation 62265. Up to 3410 conditions per place. [2024-10-24 18:51:19,204 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 356 selfloop transitions, 86 changer transitions 0/453 dead transitions. [2024-10-24 18:51:19,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 453 transitions, 3519 flow [2024-10-24 18:51:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 18:51:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-24 18:51:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 616 transitions. [2024-10-24 18:51:19,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-10-24 18:51:19,207 INFO L175 Difference]: Start difference. First operand has 106 places, 101 transitions, 693 flow. Second operand 20 states and 616 transitions. [2024-10-24 18:51:19,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 453 transitions, 3519 flow [2024-10-24 18:51:19,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 453 transitions, 3516 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:19,310 INFO L231 Difference]: Finished difference. Result has 137 places, 165 transitions, 1584 flow [2024-10-24 18:51:19,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1584, PETRI_PLACES=137, PETRI_TRANSITIONS=165} [2024-10-24 18:51:19,311 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 87 predicate places. [2024-10-24 18:51:19,311 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 165 transitions, 1584 flow [2024-10-24 18:51:19,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.41176470588235) internal successors, (347), 17 states have internal predecessors, (347), 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) [2024-10-24 18:51:19,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:19,312 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:19,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 18:51:19,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 18:51:19,516 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:19,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1203192130, now seen corresponding path program 1 times [2024-10-24 18:51:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:19,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730524180] [2024-10-24 18:51:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:19,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:19,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 18:51:19,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730524180] [2024-10-24 18:51:19,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730524180] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 18:51:19,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762190151] [2024-10-24 18:51:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:19,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 18:51:19,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 18:51:19,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 18:51:19,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 18:51:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:19,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 18:51:19,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:19,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:51:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:19,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762190151] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:51:19,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 18:51:19,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-10-24 18:51:19,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276444521] [2024-10-24 18:51:19,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 18:51:19,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 18:51:19,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 18:51:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 18:51:19,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 18:51:19,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:19,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 165 transitions, 1584 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2024-10-24 18:51:19,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:19,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:19,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:22,102 INFO L124 PetriNetUnfolderBase]: 8507/17297 cut-off events. [2024-10-24 18:51:22,102 INFO L125 PetriNetUnfolderBase]: For 35161/35161 co-relation queries the response was YES. [2024-10-24 18:51:22,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54556 conditions, 17297 events. 8507/17297 cut-off events. For 35161/35161 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 127526 event pairs, 2450 based on Foata normal form. 14/16896 useless extension candidates. Maximal degree in co-relation 54500. Up to 12999 conditions per place. [2024-10-24 18:51:22,216 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 170 selfloop transitions, 13 changer transitions 0/195 dead transitions. [2024-10-24 18:51:22,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 195 transitions, 1997 flow [2024-10-24 18:51:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:51:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 18:51:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-10-24 18:51:22,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-24 18:51:22,217 INFO L175 Difference]: Start difference. First operand has 137 places, 165 transitions, 1584 flow. Second operand 5 states and 165 transitions. [2024-10-24 18:51:22,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 195 transitions, 1997 flow [2024-10-24 18:51:22,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 195 transitions, 1886 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-10-24 18:51:22,382 INFO L231 Difference]: Finished difference. Result has 141 places, 151 transitions, 1375 flow [2024-10-24 18:51:22,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1375, PETRI_PLACES=141, PETRI_TRANSITIONS=151} [2024-10-24 18:51:22,383 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 91 predicate places. [2024-10-24 18:51:22,383 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 151 transitions, 1375 flow [2024-10-24 18:51:22,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2024-10-24 18:51:22,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:22,383 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:22,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 18:51:22,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 18:51:22,584 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:22,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:22,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1501752532, now seen corresponding path program 1 times [2024-10-24 18:51:22,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 18:51:22,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587436912] [2024-10-24 18:51:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:22,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 18:51:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 18:51:22,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 18:51:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 18:51:22,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 18:51:22,658 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 18:51:22,659 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2024-10-24 18:51:22,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-10-24 18:51:22,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 15 remaining) [2024-10-24 18:51:22,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 15 remaining) [2024-10-24 18:51:22,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-10-24 18:51:22,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-10-24 18:51:22,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2024-10-24 18:51:22,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-10-24 18:51:22,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-10-24 18:51:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONMEMORY_LEAK (5 of 15 remaining) [2024-10-24 18:51:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-10-24 18:51:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-10-24 18:51:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-10-24 18:51:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-10-24 18:51:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2024-10-24 18:51:22,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 18:51:22,663 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:22,720 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 18:51:22,721 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 18:51:22,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:51:22 BasicIcfg [2024-10-24 18:51:22,725 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 18:51:22,726 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 18:51:22,726 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 18:51:22,726 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 18:51:22,726 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:51:01" (3/4) ... [2024-10-24 18:51:22,728 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 18:51:22,729 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 18:51:22,730 INFO L158 Benchmark]: Toolchain (without parser) took 22689.76ms. Allocated memory was 138.4MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 64.4MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 806.4MB. Max. memory is 16.1GB. [2024-10-24 18:51:22,730 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 18:51:22,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.02ms. Allocated memory was 138.4MB in the beginning and 209.7MB in the end (delta: 71.3MB). Free memory was 64.4MB in the beginning and 166.5MB in the end (delta: -102.1MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2024-10-24 18:51:22,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.93ms. Allocated memory is still 209.7MB. Free memory was 166.5MB in the beginning and 164.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 18:51:22,732 INFO L158 Benchmark]: Boogie Preprocessor took 74.03ms. Allocated memory is still 209.7MB. Free memory was 164.4MB in the beginning and 161.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 18:51:22,732 INFO L158 Benchmark]: RCFGBuilder took 695.73ms. Allocated memory is still 209.7MB. Free memory was 161.2MB in the beginning and 123.5MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-10-24 18:51:22,732 INFO L158 Benchmark]: TraceAbstraction took 21125.46ms. Allocated memory was 209.7MB in the beginning and 5.9GB in the end (delta: 5.7GB). Free memory was 122.4MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 792.5MB. Max. memory is 16.1GB. [2024-10-24 18:51:22,733 INFO L158 Benchmark]: Witness Printer took 3.11ms. Allocated memory is still 5.9GB. Free memory is still 5.1GB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 18:51:22,734 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.02ms. Allocated memory was 138.4MB in the beginning and 209.7MB in the end (delta: 71.3MB). Free memory was 64.4MB in the beginning and 166.5MB in the end (delta: -102.1MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.93ms. Allocated memory is still 209.7MB. Free memory was 166.5MB in the beginning and 164.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.03ms. Allocated memory is still 209.7MB. Free memory was 164.4MB in the beginning and 161.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 695.73ms. Allocated memory is still 209.7MB. Free memory was 161.2MB in the beginning and 123.5MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 21125.46ms. Allocated memory was 209.7MB in the beginning and 5.9GB in the end (delta: 5.7GB). Free memory was 122.4MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 792.5MB. Max. memory is 16.1GB. * Witness Printer took 3.11ms. Allocated memory is still 5.9GB. Free memory is still 5.1GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(400)]; [L936] 0 static unsigned int arr[(400)]; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1019] 0 pthread_t id1, id2; [L1021] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-1, m={4:0}, top=0] [L988] 1 int i; [L989] 1 unsigned int tmp; [L990] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L990] COND TRUE 1 i<(400) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1022] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1=-1, id2=0, m={4:0}, top=0] [L1004] 2 int i; [L1005] 2 i=0 VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L993] 1 tmp = __VERIFIER_nondet_uint() [L994] CALL 1 assume_abort_if_not(tmp < (400)) [L23] COND FALSE 1 !(!cond) [L994] RET 1 assume_abort_if_not(tmp < (400)) [L995] CALL, EXPR 1 push(arr,tmp) [L960] COND FALSE 1 !(top==(400)) [L967] CALL, EXPR 1 get_top() [L952] 1 return top; [L967] RET, EXPR 1 get_top() [L967] 1 stack[get_top()] = x [L968] CALL 1 inc_top() [L944] 1 top++ [L968] RET 1 inc_top() [L970] 1 return 0; VAL [\old(stack)={3:0}, \old(x)=0, \result=0, arr={3:0}, flag=0, m={4:0}, stack={3:0}, top=1, x=0] [L995] RET, EXPR 1 push(arr,tmp) [L995] COND FALSE 1 !(push(arr,tmp)==(-1)) [L997] 1 flag=(1) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=0, top=1] [L1005] COND TRUE 2 i<(400) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, top=1] [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND FALSE 2 !(get_top()==0) [L981] CALL 2 dec_top() [L948] 2 top-- [L981] RET 2 dec_top() [L982] CALL, EXPR 2 get_top() [L952] 2 return top; [L982] RET, EXPR 2 get_top() [L982] EXPR 2 stack[get_top()] [L982] 2 return stack[get_top()]; [L1010] RET, EXPR 2 pop(arr) [L1010] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1005] 2 i++ VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1005] COND TRUE 2 i<(400) VAL [\old(arg)={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND TRUE 2 get_top()==0 [L977] 2 return (-2); VAL [\old(stack)={3:0}, \result=-2, arr={3:0}, flag=1, m={4:0}, stack={3:0}, top=0] [L1010] RET, EXPR 2 pop(arr) [L1010] COND TRUE 2 !(pop(arr)!=(-2)) [L1011] CALL 2 error() [L940] CALL 2 reach_error() [L20] COND FALSE 2 !(0) VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L20] 2 __assert_fail ("0", "stack_longer-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1017]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 85 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.9s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1424 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1367 mSDsluCounter, 157 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 132 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4187 IncrementalHoareTripleChecker+Invalid, 4222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 25 mSDtfsCounter, 4187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1584occurred in iteration=15, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 452 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 3801 SizeOfPredicates, 14 NumberOfNonLiveVariables, 835 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 23 InterpolantComputations, 13 PerfectInterpolantSequences, 7/65 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-24 18:51:22,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 18:51:25,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 18:51:25,124 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 18:51:25,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 18:51:25,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 18:51:25,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 18:51:25,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 18:51:25,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 18:51:25,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 18:51:25,174 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 18:51:25,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 18:51:25,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 18:51:25,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 18:51:25,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 18:51:25,178 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 18:51:25,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 18:51:25,178 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 18:51:25,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 18:51:25,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 18:51:25,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 18:51:25,183 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 18:51:25,183 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 18:51:25,184 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 18:51:25,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 18:51:25,184 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 18:51:25,184 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 18:51:25,185 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 18:51:25,185 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 18:51:25,185 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 18:51:25,185 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 18:51:25,186 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 18:51:25,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 18:51:25,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 18:51:25,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 18:51:25,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 18:51:25,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:51:25,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 18:51:25,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 18:51:25,187 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 18:51:25,188 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 18:51:25,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 18:51:25,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 18:51:25,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 18:51:25,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 18:51:25,189 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 18:51:25,189 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2024-10-24 18:51:25,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 18:51:25,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 18:51:25,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 18:51:25,508 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 18:51:25,509 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 18:51:25,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-24 18:51:27,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 18:51:27,279 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 18:51:27,280 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-24 18:51:27,304 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487e40c64/c03f1fc1fec34487b75fcb2d8b103fba/FLAG823dc95e4 [2024-10-24 18:51:27,319 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487e40c64/c03f1fc1fec34487b75fcb2d8b103fba [2024-10-24 18:51:27,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 18:51:27,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 18:51:27,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 18:51:27,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 18:51:27,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 18:51:27,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:27,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6beb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27, skipping insertion in model container [2024-10-24 18:51:27,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:27,402 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 18:51:27,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:51:27,872 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 18:51:27,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:51:27,992 INFO L204 MainTranslator]: Completed translation [2024-10-24 18:51:27,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27 WrapperNode [2024-10-24 18:51:27,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 18:51:27,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 18:51:27,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 18:51:27,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 18:51:27,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,049 INFO L138 Inliner]: procedures = 281, calls = 32, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 153 [2024-10-24 18:51:28,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 18:51:28,053 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 18:51:28,053 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 18:51:28,053 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 18:51:28,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,068 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,095 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-10-24 18:51:28,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 18:51:28,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 18:51:28,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 18:51:28,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 18:51:28,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (1/1) ... [2024-10-24 18:51:28,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:51:28,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 18:51:28,177 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) [2024-10-24 18:51:28,186 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 [2024-10-24 18:51:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 18:51:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 18:51:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-24 18:51:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-24 18:51:28,227 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-24 18:51:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-24 18:51:28,227 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-24 18:51:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 18:51:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 18:51:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-24 18:51:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 18:51:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 18:51:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-24 18:51:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-10-24 18:51:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-10-24 18:51:28,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-10-24 18:51:28,230 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 18:51:28,230 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 18:51:28,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 18:51:28,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 18:51:28,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 18:51:28,232 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 18:51:28,419 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 18:51:28,422 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 18:51:28,762 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 18:51:28,763 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 18:51:29,000 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 18:51:29,001 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 18:51:29,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:51:29 BoogieIcfgContainer [2024-10-24 18:51:29,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 18:51:29,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 18:51:29,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 18:51:29,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 18:51:29,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:51:27" (1/3) ... [2024-10-24 18:51:29,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de9a41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:51:29, skipping insertion in model container [2024-10-24 18:51:29,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:51:27" (2/3) ... [2024-10-24 18:51:29,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de9a41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:51:29, skipping insertion in model container [2024-10-24 18:51:29,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:51:29" (3/3) ... [2024-10-24 18:51:29,012 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2024-10-24 18:51:29,028 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 18:51:29,028 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-24 18:51:29,028 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 18:51:29,096 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 18:51:29,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 55 transitions, 124 flow [2024-10-24 18:51:29,163 INFO L124 PetriNetUnfolderBase]: 9/53 cut-off events. [2024-10-24 18:51:29,164 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 18:51:29,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 53 events. 9/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 145 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 48. Up to 3 conditions per place. [2024-10-24 18:51:29,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 55 transitions, 124 flow [2024-10-24 18:51:29,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 52 transitions, 116 flow [2024-10-24 18:51:29,184 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 18:51:29,190 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;@7bc2ad3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 18:51:29,190 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-24 18:51:29,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 18:51:29,201 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-24 18:51:29,201 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 18:51:29,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:29,202 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:29,203 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:29,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1622437433, now seen corresponding path program 1 times [2024-10-24 18:51:29,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:29,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640593643] [2024-10-24 18:51:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:29,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:29,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:29,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:29,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 18:51:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:29,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 18:51:29,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:29,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:29,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:29,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640593643] [2024-10-24 18:51:29,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640593643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:29,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:29,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:51:29,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928428909] [2024-10-24 18:51:29,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:29,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:51:29,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:51:29,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:51:29,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:29,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-24 18:51:29,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:29,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:29,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:29,836 INFO L124 PetriNetUnfolderBase]: 454/883 cut-off events. [2024-10-24 18:51:29,840 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-24 18:51:29,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 883 events. 454/883 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4530 event pairs, 242 based on Foata normal form. 90/851 useless extension candidates. Maximal degree in co-relation 1570. Up to 512 conditions per place. [2024-10-24 18:51:29,851 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 43 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-10-24 18:51:29,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 227 flow [2024-10-24 18:51:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:51:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 18:51:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-24 18:51:29,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-10-24 18:51:29,866 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 116 flow. Second operand 4 states and 117 transitions. [2024-10-24 18:51:29,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 227 flow [2024-10-24 18:51:29,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 217 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 18:51:29,872 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 100 flow [2024-10-24 18:51:29,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-10-24 18:51:29,878 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2024-10-24 18:51:29,879 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 100 flow [2024-10-24 18:51:29,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-24 18:51:29,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:29,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:29,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 18:51:30,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:30,081 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:30,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1622437434, now seen corresponding path program 1 times [2024-10-24 18:51:30,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:30,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366856831] [2024-10-24 18:51:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:30,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:30,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:30,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:30,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 18:51:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:30,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 18:51:30,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:30,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:30,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:30,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366856831] [2024-10-24 18:51:30,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366856831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:30,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:30,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:51:30,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486582536] [2024-10-24 18:51:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:30,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 18:51:30,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:30,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 18:51:30,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:51:30,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:30,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-24 18:51:30,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:30,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:30,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:30,943 INFO L124 PetriNetUnfolderBase]: 750/1388 cut-off events. [2024-10-24 18:51:30,943 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-24 18:51:30,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1388 events. 750/1388 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7410 event pairs, 125 based on Foata normal form. 0/1220 useless extension candidates. Maximal degree in co-relation 807. Up to 848 conditions per place. [2024-10-24 18:51:30,953 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 87 selfloop transitions, 8 changer transitions 0/108 dead transitions. [2024-10-24 18:51:30,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 423 flow [2024-10-24 18:51:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 18:51:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 18:51:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-10-24 18:51:30,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2024-10-24 18:51:30,956 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 100 flow. Second operand 6 states and 194 transitions. [2024-10-24 18:51:30,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 423 flow [2024-10-24 18:51:30,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 108 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 18:51:30,960 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 153 flow [2024-10-24 18:51:30,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-10-24 18:51:30,962 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-10-24 18:51:30,962 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 153 flow [2024-10-24 18:51:30,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-10-24 18:51:30,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:30,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:30,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-24 18:51:31,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:31,166 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:31,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash -738373742, now seen corresponding path program 1 times [2024-10-24 18:51:31,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:31,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918612658] [2024-10-24 18:51:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:31,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:31,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:31,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:31,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-24 18:51:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:31,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 18:51:31,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:31,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:31,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:31,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918612658] [2024-10-24 18:51:31,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918612658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:31,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:31,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:51:31,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181717334] [2024-10-24 18:51:31,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:31,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:51:31,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:31,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:51:31,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:51:31,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-10-24 18:51:31,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-10-24 18:51:31,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:31,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-10-24 18:51:31,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:31,493 INFO L124 PetriNetUnfolderBase]: 793/1531 cut-off events. [2024-10-24 18:51:31,493 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-10-24 18:51:31,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3149 conditions, 1531 events. 793/1531 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8029 event pairs, 348 based on Foata normal form. 0/1390 useless extension candidates. Maximal degree in co-relation 3064. Up to 734 conditions per place. [2024-10-24 18:51:31,504 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 56 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-10-24 18:51:31,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 303 flow [2024-10-24 18:51:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:51:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 18:51:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-24 18:51:31,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-10-24 18:51:31,507 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-10-24 18:51:31,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 303 flow [2024-10-24 18:51:31,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 301 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:31,514 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 148 flow [2024-10-24 18:51:31,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-10-24 18:51:31,515 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-10-24 18:51:31,515 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 148 flow [2024-10-24 18:51:31,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2024-10-24 18:51:31,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:31,516 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:31,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-24 18:51:31,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:31,717 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:31,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:31,718 INFO L85 PathProgramCache]: Analyzing trace with hash -120106817, now seen corresponding path program 1 times [2024-10-24 18:51:31,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:31,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374830941] [2024-10-24 18:51:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:31,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:31,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:31,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:31,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-24 18:51:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:31,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:51:31,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:31,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:31,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:31,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374830941] [2024-10-24 18:51:31,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374830941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:31,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:31,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:51:31,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879882819] [2024-10-24 18:51:31,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:31,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:51:31,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:51:31,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:51:31,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:31,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:51:31,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:31,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:31,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:32,146 INFO L124 PetriNetUnfolderBase]: 1096/2111 cut-off events. [2024-10-24 18:51:32,147 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-10-24 18:51:32,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 2111 events. 1096/2111 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12212 event pairs, 518 based on Foata normal form. 0/1975 useless extension candidates. Maximal degree in co-relation 1577. Up to 1077 conditions per place. [2024-10-24 18:51:32,159 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 68 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-10-24 18:51:32,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 89 transitions, 386 flow [2024-10-24 18:51:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:51:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 18:51:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-24 18:51:32,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6318181818181818 [2024-10-24 18:51:32,164 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 148 flow. Second operand 4 states and 139 transitions. [2024-10-24 18:51:32,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 89 transitions, 386 flow [2024-10-24 18:51:32,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 18:51:32,168 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 175 flow [2024-10-24 18:51:32,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-10-24 18:51:32,169 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-10-24 18:51:32,169 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 175 flow [2024-10-24 18:51:32,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:51:32,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:32,170 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:32,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-24 18:51:32,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:32,371 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:32,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:32,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1752604105, now seen corresponding path program 1 times [2024-10-24 18:51:32,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:32,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766533501] [2024-10-24 18:51:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:32,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:32,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:32,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:32,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-24 18:51:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:32,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 18:51:32,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:32,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:32,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:32,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:32,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766533501] [2024-10-24 18:51:32,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766533501] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:32,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:32,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:51:32,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209148995] [2024-10-24 18:51:32,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:32,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:51:32,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:51:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:51:32,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:32,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-24 18:51:32,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:32,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:32,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:32,723 INFO L124 PetriNetUnfolderBase]: 1158/2185 cut-off events. [2024-10-24 18:51:32,723 INFO L125 PetriNetUnfolderBase]: For 294/294 co-relation queries the response was YES. [2024-10-24 18:51:32,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 2185 events. 1158/2185 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 12669 event pairs, 599 based on Foata normal form. 12/2076 useless extension candidates. Maximal degree in co-relation 2137. Up to 1555 conditions per place. [2024-10-24 18:51:32,736 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 55 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-10-24 18:51:32,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 73 transitions, 342 flow [2024-10-24 18:51:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:51:32,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 18:51:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-24 18:51:32,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6424242424242425 [2024-10-24 18:51:32,738 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 175 flow. Second operand 3 states and 106 transitions. [2024-10-24 18:51:32,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 73 transitions, 342 flow [2024-10-24 18:51:32,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 337 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:32,746 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 182 flow [2024-10-24 18:51:32,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-10-24 18:51:32,748 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2024-10-24 18:51:32,749 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 182 flow [2024-10-24 18:51:32,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-24 18:51:32,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:32,749 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:32,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-24 18:51:32,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:32,952 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:32,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1805734286, now seen corresponding path program 1 times [2024-10-24 18:51:32,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:32,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790762708] [2024-10-24 18:51:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:32,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:32,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:32,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-24 18:51:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:33,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 18:51:33,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:33,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:51:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:33,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790762708] [2024-10-24 18:51:33,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790762708] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:51:33,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 18:51:33,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 18:51:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177144921] [2024-10-24 18:51:33,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 18:51:33,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 18:51:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 18:51:33,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-24 18:51:33,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:33,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 182 flow. Second operand has 10 states, 10 states have (on average 19.0) internal successors, (190), 10 states have internal predecessors, (190), 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) [2024-10-24 18:51:33,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:33,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:33,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:38,195 INFO L124 PetriNetUnfolderBase]: 5619/10734 cut-off events. [2024-10-24 18:51:38,196 INFO L125 PetriNetUnfolderBase]: For 2728/2728 co-relation queries the response was YES. [2024-10-24 18:51:38,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24314 conditions, 10734 events. 5619/10734 cut-off events. For 2728/2728 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 76339 event pairs, 736 based on Foata normal form. 264/10371 useless extension candidates. Maximal degree in co-relation 10831. Up to 1905 conditions per place. [2024-10-24 18:51:38,289 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 327 selfloop transitions, 45 changer transitions 0/387 dead transitions. [2024-10-24 18:51:38,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 387 transitions, 1861 flow [2024-10-24 18:51:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 18:51:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-24 18:51:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 685 transitions. [2024-10-24 18:51:38,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6227272727272727 [2024-10-24 18:51:38,294 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 182 flow. Second operand 20 states and 685 transitions. [2024-10-24 18:51:38,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 387 transitions, 1861 flow [2024-10-24 18:51:38,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 387 transitions, 1856 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:38,311 INFO L231 Difference]: Finished difference. Result has 92 places, 99 transitions, 598 flow [2024-10-24 18:51:38,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=598, PETRI_PLACES=92, PETRI_TRANSITIONS=99} [2024-10-24 18:51:38,313 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2024-10-24 18:51:38,313 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 99 transitions, 598 flow [2024-10-24 18:51:38,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.0) internal successors, (190), 10 states have internal predecessors, (190), 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) [2024-10-24 18:51:38,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:38,313 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:38,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-24 18:51:38,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:38,514 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:38,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:38,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1473379118, now seen corresponding path program 1 times [2024-10-24 18:51:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:38,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206670426] [2024-10-24 18:51:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:38,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:38,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:38,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:38,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-24 18:51:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:38,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:51:38,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:38,621 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 11 treesize of output 9 [2024-10-24 18:51:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:38,637 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:38,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:38,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206670426] [2024-10-24 18:51:38,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206670426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:38,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:38,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:51:38,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789351634] [2024-10-24 18:51:38,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:38,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:51:38,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:38,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:51:38,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:51:38,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:38,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 99 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-10-24 18:51:38,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:38,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:38,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:39,211 INFO L124 PetriNetUnfolderBase]: 2678/5618 cut-off events. [2024-10-24 18:51:39,212 INFO L125 PetriNetUnfolderBase]: For 3569/3569 co-relation queries the response was YES. [2024-10-24 18:51:39,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13892 conditions, 5618 events. 2678/5618 cut-off events. For 3569/3569 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 36171 event pairs, 589 based on Foata normal form. 364/5802 useless extension candidates. Maximal degree in co-relation 13558. Up to 3210 conditions per place. [2024-10-24 18:51:39,256 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 70 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-10-24 18:51:39,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 615 flow [2024-10-24 18:51:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:51:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 18:51:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-10-24 18:51:39,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2024-10-24 18:51:39,258 INFO L175 Difference]: Start difference. First operand has 92 places, 99 transitions, 598 flow. Second operand 3 states and 94 transitions. [2024-10-24 18:51:39,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 615 flow [2024-10-24 18:51:39,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 90 transitions, 567 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-10-24 18:51:39,281 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 395 flow [2024-10-24 18:51:39,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-10-24 18:51:39,283 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2024-10-24 18:51:39,283 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 395 flow [2024-10-24 18:51:39,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-10-24 18:51:39,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:39,284 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] [2024-10-24 18:51:39,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-24 18:51:39,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:39,485 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:39,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1880369082, now seen corresponding path program 1 times [2024-10-24 18:51:39,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:39,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772271187] [2024-10-24 18:51:39,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:39,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:39,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:39,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:39,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-24 18:51:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:39,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 18:51:39,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:39,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:39,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:39,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772271187] [2024-10-24 18:51:39,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772271187] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:39,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:39,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:51:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846820123] [2024-10-24 18:51:39,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:39,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:51:39,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:51:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:51:39,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:39,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 395 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-24 18:51:39,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:39,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:39,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:40,153 INFO L124 PetriNetUnfolderBase]: 2633/5407 cut-off events. [2024-10-24 18:51:40,153 INFO L125 PetriNetUnfolderBase]: For 2298/2298 co-relation queries the response was YES. [2024-10-24 18:51:40,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13642 conditions, 5407 events. 2633/5407 cut-off events. For 2298/2298 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 34530 event pairs, 1881 based on Foata normal form. 0/5250 useless extension candidates. Maximal degree in co-relation 11211. Up to 4039 conditions per place. [2024-10-24 18:51:40,191 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 65 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-10-24 18:51:40,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 546 flow [2024-10-24 18:51:40,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:51:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 18:51:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-10-24 18:51:40,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-10-24 18:51:40,193 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 395 flow. Second operand 4 states and 100 transitions. [2024-10-24 18:51:40,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 546 flow [2024-10-24 18:51:40,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:40,208 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 395 flow [2024-10-24 18:51:40,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=395, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-10-24 18:51:40,209 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2024-10-24 18:51:40,209 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 395 flow [2024-10-24 18:51:40,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-24 18:51:40,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:40,210 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] [2024-10-24 18:51:40,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-10-24 18:51:40,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:40,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:40,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:40,412 INFO L85 PathProgramCache]: Analyzing trace with hash 923237661, now seen corresponding path program 1 times [2024-10-24 18:51:40,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:40,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038222842] [2024-10-24 18:51:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:40,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:40,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:40,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:40,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-24 18:51:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:40,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 18:51:40,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:40,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:40,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:40,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038222842] [2024-10-24 18:51:40,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038222842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:40,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:40,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:51:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695820184] [2024-10-24 18:51:40,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:40,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 18:51:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 18:51:40,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 18:51:40,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:40,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 395 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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) [2024-10-24 18:51:40,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:40,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:40,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:41,428 INFO L124 PetriNetUnfolderBase]: 2709/5584 cut-off events. [2024-10-24 18:51:41,428 INFO L125 PetriNetUnfolderBase]: For 2667/2667 co-relation queries the response was YES. [2024-10-24 18:51:41,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13825 conditions, 5584 events. 2709/5584 cut-off events. For 2667/2667 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 35292 event pairs, 859 based on Foata normal form. 0/5406 useless extension candidates. Maximal degree in co-relation 11395. Up to 3583 conditions per place. [2024-10-24 18:51:41,468 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 107 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2024-10-24 18:51:41,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 792 flow [2024-10-24 18:51:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 18:51:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 18:51:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-10-24 18:51:41,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-10-24 18:51:41,470 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 395 flow. Second operand 6 states and 185 transitions. [2024-10-24 18:51:41,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 792 flow [2024-10-24 18:51:41,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 130 transitions, 778 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 18:51:41,484 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 433 flow [2024-10-24 18:51:41,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=433, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2024-10-24 18:51:41,485 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2024-10-24 18:51:41,485 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 433 flow [2024-10-24 18:51:41,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 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) [2024-10-24 18:51:41,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:41,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:41,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-24 18:51:41,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:41,687 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:41,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1079345895, now seen corresponding path program 1 times [2024-10-24 18:51:41,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:41,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236991318] [2024-10-24 18:51:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:41,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:41,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:41,692 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:41,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-24 18:51:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:41,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 18:51:41,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:41,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:41,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:41,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236991318] [2024-10-24 18:51:41,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236991318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:41,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:41,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:51:41,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704960491] [2024-10-24 18:51:41,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:41,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:51:41,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:41,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:51:41,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:51:41,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:41,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 433 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-24 18:51:41,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:41,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:41,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:42,554 INFO L124 PetriNetUnfolderBase]: 3805/7957 cut-off events. [2024-10-24 18:51:42,554 INFO L125 PetriNetUnfolderBase]: For 3931/3931 co-relation queries the response was YES. [2024-10-24 18:51:42,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19829 conditions, 7957 events. 3805/7957 cut-off events. For 3931/3931 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 55988 event pairs, 1889 based on Foata normal form. 137/7846 useless extension candidates. Maximal degree in co-relation 16740. Up to 4730 conditions per place. [2024-10-24 18:51:42,594 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 121 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2024-10-24 18:51:42,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 1028 flow [2024-10-24 18:51:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:51:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 18:51:42,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-10-24 18:51:42,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-10-24 18:51:42,596 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 433 flow. Second operand 3 states and 107 transitions. [2024-10-24 18:51:42,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 1028 flow [2024-10-24 18:51:42,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 138 transitions, 1024 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 18:51:42,617 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 442 flow [2024-10-24 18:51:42,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-10-24 18:51:42,618 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2024-10-24 18:51:42,618 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 442 flow [2024-10-24 18:51:42,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-10-24 18:51:42,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:42,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:42,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-24 18:51:42,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:42,823 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:42,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:42,824 INFO L85 PathProgramCache]: Analyzing trace with hash 536686063, now seen corresponding path program 1 times [2024-10-24 18:51:42,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:42,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485933716] [2024-10-24 18:51:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:42,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:42,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:42,831 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:42,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-24 18:51:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:42,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 18:51:42,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:42,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:42,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:42,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485933716] [2024-10-24 18:51:42,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485933716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:42,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:42,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 18:51:42,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154198904] [2024-10-24 18:51:42,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:42,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 18:51:42,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 18:51:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:51:42,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:42,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-10-24 18:51:42,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:42,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:42,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:43,794 INFO L124 PetriNetUnfolderBase]: 3746/7782 cut-off events. [2024-10-24 18:51:43,794 INFO L125 PetriNetUnfolderBase]: For 5048/5048 co-relation queries the response was YES. [2024-10-24 18:51:43,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20948 conditions, 7782 events. 3746/7782 cut-off events. For 5048/5048 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 53193 event pairs, 1180 based on Foata normal form. 16/7573 useless extension candidates. Maximal degree in co-relation 17598. Up to 5140 conditions per place. [2024-10-24 18:51:43,830 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 102 selfloop transitions, 7 changer transitions 0/124 dead transitions. [2024-10-24 18:51:43,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 124 transitions, 808 flow [2024-10-24 18:51:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:51:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 18:51:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-10-24 18:51:43,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-24 18:51:43,831 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 442 flow. Second operand 5 states and 165 transitions. [2024-10-24 18:51:43,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 124 transitions, 808 flow [2024-10-24 18:51:43,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 796 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-24 18:51:43,855 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 448 flow [2024-10-24 18:51:43,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-10-24 18:51:43,856 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 44 predicate places. [2024-10-24 18:51:43,856 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 448 flow [2024-10-24 18:51:43,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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) [2024-10-24 18:51:43,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:43,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:43,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-10-24 18:51:44,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:44,061 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:44,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:44,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1422859333, now seen corresponding path program 1 times [2024-10-24 18:51:44,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:44,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985438413] [2024-10-24 18:51:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:44,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:44,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:44,063 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:44,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-24 18:51:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:44,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 18:51:44,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:44,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 18:51:44,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-24 18:51:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:44,446 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:51:44,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:44,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985438413] [2024-10-24 18:51:44,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985438413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:51:44,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:51:44,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 18:51:44,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228274678] [2024-10-24 18:51:44,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:51:44,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 18:51:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:44,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 18:51:44,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-24 18:51:44,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:51:44,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 448 flow. Second operand has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 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) [2024-10-24 18:51:44,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:44,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:51:44,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:45,938 INFO L124 PetriNetUnfolderBase]: 5266/10862 cut-off events. [2024-10-24 18:51:45,939 INFO L125 PetriNetUnfolderBase]: For 7250/7250 co-relation queries the response was YES. [2024-10-24 18:51:45,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29205 conditions, 10862 events. 5266/10862 cut-off events. For 7250/7250 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 75844 event pairs, 1414 based on Foata normal form. 0/10581 useless extension candidates. Maximal degree in co-relation 23605. Up to 5182 conditions per place. [2024-10-24 18:51:46,033 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 190 selfloop transitions, 21 changer transitions 0/226 dead transitions. [2024-10-24 18:51:46,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 226 transitions, 1496 flow [2024-10-24 18:51:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 18:51:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 18:51:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 396 transitions. [2024-10-24 18:51:46,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-10-24 18:51:46,036 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 448 flow. Second operand 14 states and 396 transitions. [2024-10-24 18:51:46,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 226 transitions, 1496 flow [2024-10-24 18:51:46,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 226 transitions, 1476 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 18:51:46,067 INFO L231 Difference]: Finished difference. Result has 106 places, 90 transitions, 556 flow [2024-10-24 18:51:46,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=556, PETRI_PLACES=106, PETRI_TRANSITIONS=90} [2024-10-24 18:51:46,068 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 56 predicate places. [2024-10-24 18:51:46,068 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 556 flow [2024-10-24 18:51:46,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 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) [2024-10-24 18:51:46,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:46,069 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:46,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-10-24 18:51:46,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:46,269 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:46,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:46,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1389318123, now seen corresponding path program 1 times [2024-10-24 18:51:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739610255] [2024-10-24 18:51:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:46,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:46,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:46,272 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:46,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-24 18:51:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:46,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:51:46,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:46,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:51:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:46,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:46,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739610255] [2024-10-24 18:51:46,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739610255] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:51:46,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 18:51:46,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-10-24 18:51:46,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077102815] [2024-10-24 18:51:46,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 18:51:46,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 18:51:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:46,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 18:51:46,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 18:51:46,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:46,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 556 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-10-24 18:51:46,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:46,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:46,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:49,000 INFO L124 PetriNetUnfolderBase]: 13641/26402 cut-off events. [2024-10-24 18:51:49,000 INFO L125 PetriNetUnfolderBase]: For 25752/25752 co-relation queries the response was YES. [2024-10-24 18:51:49,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73216 conditions, 26402 events. 13641/26402 cut-off events. For 25752/25752 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 209055 event pairs, 1455 based on Foata normal form. 1703/27509 useless extension candidates. Maximal degree in co-relation 61145. Up to 6709 conditions per place. [2024-10-24 18:51:49,341 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 311 selfloop transitions, 6 changer transitions 0/331 dead transitions. [2024-10-24 18:51:49,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 331 transitions, 2881 flow [2024-10-24 18:51:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 18:51:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 18:51:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-10-24 18:51:49,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6696969696969697 [2024-10-24 18:51:49,342 INFO L175 Difference]: Start difference. First operand has 106 places, 90 transitions, 556 flow. Second operand 6 states and 221 transitions. [2024-10-24 18:51:49,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 331 transitions, 2881 flow [2024-10-24 18:51:49,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 331 transitions, 2687 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-10-24 18:51:49,414 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 548 flow [2024-10-24 18:51:49,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2024-10-24 18:51:49,415 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 57 predicate places. [2024-10-24 18:51:49,415 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 548 flow [2024-10-24 18:51:49,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-10-24 18:51:49,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:51:49,415 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:51:49,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-24 18:51:49,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:49,616 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:51:49,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:51:49,617 INFO L85 PathProgramCache]: Analyzing trace with hash 782294467, now seen corresponding path program 1 times [2024-10-24 18:51:49,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:51:49,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034255533] [2024-10-24 18:51:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:51:49,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:51:49,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:51:49,621 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:51:49,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-24 18:51:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:51:49,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 18:51:49,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:51:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:49,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:51:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:51:50,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:51:50,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034255533] [2024-10-24 18:51:50,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034255533] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:51:50,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 18:51:50,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-24 18:51:50,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679838868] [2024-10-24 18:51:50,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 18:51:50,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 18:51:50,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:51:50,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 18:51:50,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-24 18:51:50,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-10-24 18:51:50,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 548 flow. Second operand has 12 states, 12 states have (on average 20.166666666666668) internal successors, (242), 12 states have internal predecessors, (242), 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) [2024-10-24 18:51:50,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:51:50,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-10-24 18:51:50,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:51:59,881 INFO L124 PetriNetUnfolderBase]: 23596/49699 cut-off events. [2024-10-24 18:51:59,881 INFO L125 PetriNetUnfolderBase]: For 68087/68087 co-relation queries the response was YES. [2024-10-24 18:52:00,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150557 conditions, 49699 events. 23596/49699 cut-off events. For 68087/68087 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 459731 event pairs, 5913 based on Foata normal form. 210/48370 useless extension candidates. Maximal degree in co-relation 86701. Up to 8212 conditions per place. [2024-10-24 18:52:00,331 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 353 selfloop transitions, 63 changer transitions 0/431 dead transitions. [2024-10-24 18:52:00,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 431 transitions, 3110 flow [2024-10-24 18:52:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 18:52:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-24 18:52:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 626 transitions. [2024-10-24 18:52:00,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5690909090909091 [2024-10-24 18:52:00,334 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 548 flow. Second operand 20 states and 626 transitions. [2024-10-24 18:52:00,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 431 transitions, 3110 flow [2024-10-24 18:52:00,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 431 transitions, 3032 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-10-24 18:52:00,753 INFO L231 Difference]: Finished difference. Result has 140 places, 138 transitions, 1054 flow [2024-10-24 18:52:00,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1054, PETRI_PLACES=140, PETRI_TRANSITIONS=138} [2024-10-24 18:52:00,754 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 90 predicate places. [2024-10-24 18:52:00,754 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 138 transitions, 1054 flow [2024-10-24 18:52:00,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.166666666666668) internal successors, (242), 12 states have internal predecessors, (242), 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) [2024-10-24 18:52:00,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:52:00,755 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:52:00,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-24 18:52:00,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:52:00,955 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:52:00,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:52:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1127878053, now seen corresponding path program 1 times [2024-10-24 18:52:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:52:00,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254792274] [2024-10-24 18:52:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:52:00,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:52:00,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:52:00,958 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:52:00,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-24 18:52:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:52:01,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 18:52:01,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:52:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:52:01,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:52:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:52:01,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:52:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254792274] [2024-10-24 18:52:01,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254792274] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:52:01,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 18:52:01,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2024-10-24 18:52:01,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668464343] [2024-10-24 18:52:01,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 18:52:01,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 18:52:01,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:52:01,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 18:52:01,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 18:52:01,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:52:01,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 138 transitions, 1054 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-10-24 18:52:01,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:52:01,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:52:01,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 18:52:07,487 INFO L124 PetriNetUnfolderBase]: 21740/46011 cut-off events. [2024-10-24 18:52:07,487 INFO L125 PetriNetUnfolderBase]: For 81638/81638 co-relation queries the response was YES. [2024-10-24 18:52:07,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144460 conditions, 46011 events. 21740/46011 cut-off events. For 81638/81638 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 419826 event pairs, 8430 based on Foata normal form. 25/44791 useless extension candidates. Maximal degree in co-relation 140736. Up to 33279 conditions per place. [2024-10-24 18:52:08,112 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 153 selfloop transitions, 10 changer transitions 0/179 dead transitions. [2024-10-24 18:52:08,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 179 transitions, 1565 flow [2024-10-24 18:52:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 18:52:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 18:52:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-10-24 18:52:08,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5963636363636363 [2024-10-24 18:52:08,114 INFO L175 Difference]: Start difference. First operand has 140 places, 138 transitions, 1054 flow. Second operand 5 states and 164 transitions. [2024-10-24 18:52:08,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 179 transitions, 1565 flow [2024-10-24 18:52:08,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 179 transitions, 1515 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-10-24 18:52:08,797 INFO L231 Difference]: Finished difference. Result has 144 places, 135 transitions, 1024 flow [2024-10-24 18:52:08,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1024, PETRI_PLACES=144, PETRI_TRANSITIONS=135} [2024-10-24 18:52:08,798 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 94 predicate places. [2024-10-24 18:52:08,798 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 135 transitions, 1024 flow [2024-10-24 18:52:08,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-10-24 18:52:08,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 18:52:08,798 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:52:08,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-24 18:52:08,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:52:08,999 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 18:52:08,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:52:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1094045467, now seen corresponding path program 1 times [2024-10-24 18:52:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:52:09,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243084202] [2024-10-24 18:52:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:52:09,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 18:52:09,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:52:09,001 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 18:52:09,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-24 18:52:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:52:09,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 18:52:09,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:52:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:52:09,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:52:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:52:09,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:52:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243084202] [2024-10-24 18:52:09,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243084202] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:52:09,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 18:52:09,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-24 18:52:09,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763597713] [2024-10-24 18:52:09,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 18:52:09,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 18:52:09,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:52:09,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 18:52:09,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-24 18:52:09,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-10-24 18:52:09,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 135 transitions, 1024 flow. Second operand has 10 states, 10 states have (on average 22.0) internal successors, (220), 10 states have internal predecessors, (220), 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) [2024-10-24 18:52:09,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 18:52:09,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-10-24 18:52:09,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand