./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/stack_longer-2.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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:19:07,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:19:07,869 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:19:07,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:19:07,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:19:07,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:19:07,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:19:07,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:19:07,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:19:07,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:19:07,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:19:07,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:19:07,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:19:07,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:19:07,912 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:19:07,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:19:07,913 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:19:07,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:19:07,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:19:07,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:19:07,914 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:19:07,916 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:19:07,917 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:19:07,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:19:07,917 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:19:07,917 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:19:07,918 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:19:07,918 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:19:07,918 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:19:07,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:19:07,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:19:07,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:19:07,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:19:07,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:19:07,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:19:07,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:19:07,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:19:07,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:19:07,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:19:07,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:19:07,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:19:07,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:19:07,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2024-11-22 21:19:08,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:19:08,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:19:08,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:19:08,267 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:19:08,268 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:19:08,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-22 21:19:09,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:19:09,922 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:19:09,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-22 21:19:09,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2b27134c/e46121cf7c2c4f688b7e934fb85e5b1d/FLAG2766b7fab [2024-11-22 21:19:10,201 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2b27134c/e46121cf7c2c4f688b7e934fb85e5b1d [2024-11-22 21:19:10,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:19:10,204 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:19:10,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:19:10,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:19:10,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:19:10,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:10,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61341f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10, skipping insertion in model container [2024-11-22 21:19:10,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:10,271 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:19:10,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:19:10,791 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:19:10,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:19:10,972 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:19:10,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10 WrapperNode [2024-11-22 21:19:10,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:19:10,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:19:10,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:19:10,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:19:10,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,009 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,060 INFO L138 Inliner]: procedures = 277, calls = 431, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 549 [2024-11-22 21:19:11,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:19:11,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:19:11,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:19:11,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:19:11,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,107 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2024-11-22 21:19:11,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:19:11,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:19:11,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:19:11,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:19:11,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (1/1) ... [2024-11-22 21:19:11,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:19:11,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:11,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:19:11,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:19:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-22 21:19:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-22 21:19:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-22 21:19:11,235 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-22 21:19:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 21:19:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:19:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:19:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 21:19:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:19:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:19:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 21:19:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 21:19:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:19:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:19:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:19:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 21:19:11,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:19:11,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:19:11,238 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:19:11,363 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:19:11,365 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:19:12,187 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:19:12,187 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:19:17,023 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:19:17,024 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:19:17,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:19:17 BoogieIcfgContainer [2024-11-22 21:19:17,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:19:17,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:19:17,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:19:17,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:19:17,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:19:10" (1/3) ... [2024-11-22 21:19:17,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea5f5fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:19:17, skipping insertion in model container [2024-11-22 21:19:17,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:19:10" (2/3) ... [2024-11-22 21:19:17,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea5f5fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:19:17, skipping insertion in model container [2024-11-22 21:19:17,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:19:17" (3/3) ... [2024-11-22 21:19:17,037 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-11-22 21:19:17,057 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:19:17,057 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-22 21:19:17,057 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:19:17,129 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:19:17,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 54 transitions, 122 flow [2024-11-22 21:19:17,225 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-11-22 21:19:17,226 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:19:17,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 9/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-11-22 21:19:17,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 54 transitions, 122 flow [2024-11-22 21:19:17,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 51 transitions, 114 flow [2024-11-22 21:19:17,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:19:17,252 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;@7afbef4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:19:17,253 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-22 21:19:17,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:19:17,281 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-11-22 21:19:17,281 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:19:17,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:17,282 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:17,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:17,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash -629487562, now seen corresponding path program 1 times [2024-11-22 21:19:17,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:17,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754285662] [2024-11-22 21:19:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:17,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:17,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754285662] [2024-11-22 21:19:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754285662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:17,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:17,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:19:17,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659496630] [2024-11-22 21:19:17,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:17,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:19:17,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:19:18,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:19:18,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:18,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:18,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:18,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:18,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:18,312 INFO L124 PetriNetUnfolderBase]: 459/863 cut-off events. [2024-11-22 21:19:18,312 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-22 21:19:18,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 863 events. 459/863 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4264 event pairs, 245 based on Foata normal form. 90/827 useless extension candidates. Maximal degree in co-relation 1557. Up to 520 conditions per place. [2024-11-22 21:19:18,323 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 43 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-11-22 21:19:18,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 225 flow [2024-11-22 21:19:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:19:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:19:18,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-22 21:19:18,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-22 21:19:18,337 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 114 flow. Second operand 4 states and 113 transitions. [2024-11-22 21:19:18,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 225 flow [2024-11-22 21:19:18,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 215 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:19:18,343 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 98 flow [2024-11-22 21:19:18,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-22 21:19:18,348 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-11-22 21:19:18,349 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 98 flow [2024-11-22 21:19:18,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:18,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:18,349 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:18,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:19:18,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:18,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:18,351 INFO L85 PathProgramCache]: Analyzing trace with hash -629487561, now seen corresponding path program 1 times [2024-11-22 21:19:18,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:18,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559311947] [2024-11-22 21:19:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:18,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:19,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:19,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559311947] [2024-11-22 21:19:19,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559311947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:19,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:19,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:19,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337891215] [2024-11-22 21:19:19,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:19,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:19:19,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:19,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:19:19,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:19:19,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:19,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:19,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:19,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:19,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:19,343 INFO L124 PetriNetUnfolderBase]: 574/1065 cut-off events. [2024-11-22 21:19:19,344 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-22 21:19:19,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 1065 events. 574/1065 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5035 event pairs, 179 based on Foata normal form. 9/927 useless extension candidates. Maximal degree in co-relation 695. Up to 755 conditions per place. [2024-11-22 21:19:19,354 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 59 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-22 21:19:19,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 293 flow [2024-11-22 21:19:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:19:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:19:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-22 21:19:19,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-11-22 21:19:19,357 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 98 flow. Second operand 5 states and 143 transitions. [2024-11-22 21:19:19,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 293 flow [2024-11-22 21:19:19,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:19:19,362 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 128 flow [2024-11-22 21:19:19,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-11-22 21:19:19,364 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-11-22 21:19:19,364 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 128 flow [2024-11-22 21:19:19,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:19,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:19,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:19,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:19:19,366 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:19,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash 355070460, now seen corresponding path program 1 times [2024-11-22 21:19:19,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:19,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042828512] [2024-11-22 21:19:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:19,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:19,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:19,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042828512] [2024-11-22 21:19:19,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042828512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:19,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:19,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:19:19,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027400921] [2024-11-22 21:19:19,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:19,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:19:19,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:19,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:19:19,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:19:19,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:19,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:19,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:19,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:19,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:19,781 INFO L124 PetriNetUnfolderBase]: 823/1512 cut-off events. [2024-11-22 21:19:19,782 INFO L125 PetriNetUnfolderBase]: For 255/258 co-relation queries the response was YES. [2024-11-22 21:19:19,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3207 conditions, 1512 events. 823/1512 cut-off events. For 255/258 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7707 event pairs, 363 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 1126. Up to 857 conditions per place. [2024-11-22 21:19:19,792 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-22 21:19:19,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 370 flow [2024-11-22 21:19:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:19:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:19:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-22 21:19:19,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-22 21:19:19,795 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 128 flow. Second operand 4 states and 135 transitions. [2024-11-22 21:19:19,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 370 flow [2024-11-22 21:19:19,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:19,798 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 159 flow [2024-11-22 21:19:19,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-22 21:19:19,799 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-11-22 21:19:19,800 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 159 flow [2024-11-22 21:19:19,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:19,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:19,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:19,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:19:19,801 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:19,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1336273583, now seen corresponding path program 1 times [2024-11-22 21:19:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:19,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778192936] [2024-11-22 21:19:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:19,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778192936] [2024-11-22 21:19:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778192936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:19,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:19,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707846509] [2024-11-22 21:19:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:19,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:19:19,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:19,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:19,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:19,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:19,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:20,130 INFO L124 PetriNetUnfolderBase]: 957/1712 cut-off events. [2024-11-22 21:19:20,131 INFO L125 PetriNetUnfolderBase]: For 518/522 co-relation queries the response was YES. [2024-11-22 21:19:20,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 1712 events. 957/1712 cut-off events. For 518/522 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8850 event pairs, 395 based on Foata normal form. 14/1573 useless extension candidates. Maximal degree in co-relation 1265. Up to 1191 conditions per place. [2024-11-22 21:19:20,143 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 55 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-22 21:19:20,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 328 flow [2024-11-22 21:19:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-22 21:19:20,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-11-22 21:19:20,146 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 159 flow. Second operand 3 states and 103 transitions. [2024-11-22 21:19:20,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 328 flow [2024-11-22 21:19:20,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:20,153 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 168 flow [2024-11-22 21:19:20,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-22 21:19:20,155 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-11-22 21:19:20,155 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 168 flow [2024-11-22 21:19:20,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:20,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:20,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:20,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:19:20,157 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:20,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:20,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1517244429, now seen corresponding path program 1 times [2024-11-22 21:19:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:20,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028591661] [2024-11-22 21:19:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:20,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:20,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:20,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028591661] [2024-11-22 21:19:20,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028591661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:20,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:20,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:20,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62495512] [2024-11-22 21:19:20,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:20,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:20,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:20,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:20,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:19:20,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:20,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:20,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:20,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:20,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:20,658 INFO L124 PetriNetUnfolderBase]: 499/1032 cut-off events. [2024-11-22 21:19:20,659 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-11-22 21:19:20,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 1032 events. 499/1032 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4789 event pairs, 105 based on Foata normal form. 60/1020 useless extension candidates. Maximal degree in co-relation 989. Up to 634 conditions per place. [2024-11-22 21:19:20,666 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 45 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-22 21:19:20,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 300 flow [2024-11-22 21:19:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:20,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-22 21:19:20,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-11-22 21:19:20,668 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 168 flow. Second operand 3 states and 91 transitions. [2024-11-22 21:19:20,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 300 flow [2024-11-22 21:19:20,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 292 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:20,671 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 170 flow [2024-11-22 21:19:20,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-11-22 21:19:20,672 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-11-22 21:19:20,672 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 170 flow [2024-11-22 21:19:20,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:20,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:20,673 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:20,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:19:20,673 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:20,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:20,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1885659421, now seen corresponding path program 1 times [2024-11-22 21:19:20,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:20,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709023196] [2024-11-22 21:19:20,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:20,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:21,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:21,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709023196] [2024-11-22 21:19:21,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709023196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:21,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93036106] [2024-11-22 21:19:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:21,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:21,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:21,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:19:21,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:19:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:21,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 21:19:21,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:21,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93036106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:21,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:21,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-22 21:19:21,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774083534] [2024-11-22 21:19:21,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:21,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:19:21,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:21,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:19:21,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:19:21,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-22 21:19:21,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 170 flow. Second operand has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:21,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:21,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-22 21:19:21,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:22,835 INFO L124 PetriNetUnfolderBase]: 1740/3508 cut-off events. [2024-11-22 21:19:22,836 INFO L125 PetriNetUnfolderBase]: For 798/798 co-relation queries the response was YES. [2024-11-22 21:19:22,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8219 conditions, 3508 events. 1740/3508 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19723 event pairs, 262 based on Foata normal form. 54/3327 useless extension candidates. Maximal degree in co-relation 2561. Up to 699 conditions per place. [2024-11-22 21:19:22,861 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 194 selfloop transitions, 26 changer transitions 0/231 dead transitions. [2024-11-22 21:19:22,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 231 transitions, 1170 flow [2024-11-22 21:19:22,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 21:19:22,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 21:19:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 425 transitions. [2024-11-22 21:19:22,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-11-22 21:19:22,864 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 170 flow. Second operand 15 states and 425 transitions. [2024-11-22 21:19:22,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 231 transitions, 1170 flow [2024-11-22 21:19:22,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 231 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:22,874 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 417 flow [2024-11-22 21:19:22,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=417, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-22 21:19:22,875 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2024-11-22 21:19:22,875 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 417 flow [2024-11-22 21:19:22,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:22,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:22,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:22,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:19:23,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 21:19:23,077 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:23,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash 661418226, now seen corresponding path program 1 times [2024-11-22 21:19:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:23,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035531022] [2024-11-22 21:19:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:23,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:23,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:23,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035531022] [2024-11-22 21:19:23,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035531022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:23,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:23,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:19:23,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723717572] [2024-11-22 21:19:23,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:23,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:19:23,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:19:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:19:23,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:23,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:23,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:23,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:23,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:23,685 INFO L124 PetriNetUnfolderBase]: 1695/3428 cut-off events. [2024-11-22 21:19:23,685 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2024-11-22 21:19:23,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8806 conditions, 3428 events. 1695/3428 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19765 event pairs, 958 based on Foata normal form. 0/3314 useless extension candidates. Maximal degree in co-relation 7328. Up to 2028 conditions per place. [2024-11-22 21:19:23,717 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 55 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-11-22 21:19:23,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 591 flow [2024-11-22 21:19:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:19:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:19:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-22 21:19:23,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-22 21:19:23,719 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 417 flow. Second operand 5 states and 117 transitions. [2024-11-22 21:19:23,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 591 flow [2024-11-22 21:19:23,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 581 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-22 21:19:23,731 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 441 flow [2024-11-22 21:19:23,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-11-22 21:19:23,732 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 35 predicate places. [2024-11-22 21:19:23,733 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 441 flow [2024-11-22 21:19:23,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:23,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:23,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:23,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:19:23,733 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:23,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:23,734 INFO L85 PathProgramCache]: Analyzing trace with hash 661418227, now seen corresponding path program 1 times [2024-11-22 21:19:23,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:23,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327302411] [2024-11-22 21:19:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:23,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:24,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:24,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327302411] [2024-11-22 21:19:24,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327302411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:24,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:24,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:19:24,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785737041] [2024-11-22 21:19:24,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:24,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:19:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:24,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:19:24,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:19:24,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:24,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:24,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:24,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:24,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:25,062 INFO L124 PetriNetUnfolderBase]: 1847/3722 cut-off events. [2024-11-22 21:19:25,062 INFO L125 PetriNetUnfolderBase]: For 2935/2935 co-relation queries the response was YES. [2024-11-22 21:19:25,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9848 conditions, 3722 events. 1847/3722 cut-off events. For 2935/2935 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 21468 event pairs, 510 based on Foata normal form. 0/3572 useless extension candidates. Maximal degree in co-relation 8311. Up to 2690 conditions per place. [2024-11-22 21:19:25,099 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 100 selfloop transitions, 7 changer transitions 0/118 dead transitions. [2024-11-22 21:19:25,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 118 transitions, 834 flow [2024-11-22 21:19:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:19:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:19:25,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-11-22 21:19:25,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-22 21:19:25,102 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 441 flow. Second operand 6 states and 168 transitions. [2024-11-22 21:19:25,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 118 transitions, 834 flow [2024-11-22 21:19:25,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 118 transitions, 788 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:19:25,120 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 472 flow [2024-11-22 21:19:25,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-11-22 21:19:25,123 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 39 predicate places. [2024-11-22 21:19:25,123 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 472 flow [2024-11-22 21:19:25,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:25,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:25,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:25,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:19:25,124 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:25,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:25,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1629528013, now seen corresponding path program 1 times [2024-11-22 21:19:25,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:25,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447346635] [2024-11-22 21:19:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:25,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:25,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:25,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447346635] [2024-11-22 21:19:25,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447346635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:25,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:25,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:25,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352280153] [2024-11-22 21:19:25,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:25,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:25,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:25,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:25,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:19:25,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:25,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:25,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:25,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:25,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:25,953 INFO L124 PetriNetUnfolderBase]: 2725/5696 cut-off events. [2024-11-22 21:19:25,953 INFO L125 PetriNetUnfolderBase]: For 3993/3993 co-relation queries the response was YES. [2024-11-22 21:19:25,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14599 conditions, 5696 events. 2725/5696 cut-off events. For 3993/3993 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 38116 event pairs, 1359 based on Foata normal form. 137/5631 useless extension candidates. Maximal degree in co-relation 12585. Up to 3244 conditions per place. [2024-11-22 21:19:26,013 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 122 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2024-11-22 21:19:26,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 136 transitions, 1106 flow [2024-11-22 21:19:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-22 21:19:26,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-11-22 21:19:26,015 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 472 flow. Second operand 3 states and 104 transitions. [2024-11-22 21:19:26,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 136 transitions, 1106 flow [2024-11-22 21:19:26,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 1094 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-22 21:19:26,038 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 477 flow [2024-11-22 21:19:26,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-11-22 21:19:26,040 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2024-11-22 21:19:26,040 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 477 flow [2024-11-22 21:19:26,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:26,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:26,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:26,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:19:26,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:26,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:26,044 INFO L85 PathProgramCache]: Analyzing trace with hash -935545679, now seen corresponding path program 1 times [2024-11-22 21:19:26,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:26,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639343465] [2024-11-22 21:19:26,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:26,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:27,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639343465] [2024-11-22 21:19:27,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639343465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:27,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:27,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 21:19:27,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709857190] [2024-11-22 21:19:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:27,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:19:27,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:19:27,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:19:27,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:27,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 477 flow. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:27,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:27,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:27,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:28,687 INFO L124 PetriNetUnfolderBase]: 3462/7027 cut-off events. [2024-11-22 21:19:28,687 INFO L125 PetriNetUnfolderBase]: For 5802/5802 co-relation queries the response was YES. [2024-11-22 21:19:28,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19737 conditions, 7027 events. 3462/7027 cut-off events. For 5802/5802 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 44926 event pairs, 786 based on Foata normal form. 0/6807 useless extension candidates. Maximal degree in co-relation 16162. Up to 3938 conditions per place. [2024-11-22 21:19:28,742 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 159 selfloop transitions, 11 changer transitions 0/182 dead transitions. [2024-11-22 21:19:28,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 182 transitions, 1302 flow [2024-11-22 21:19:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 21:19:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 21:19:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 297 transitions. [2024-11-22 21:19:28,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 21:19:28,744 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 477 flow. Second operand 11 states and 297 transitions. [2024-11-22 21:19:28,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 182 transitions, 1302 flow [2024-11-22 21:19:28,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 182 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:28,772 INFO L231 Difference]: Finished difference. Result has 101 places, 83 transitions, 523 flow [2024-11-22 21:19:28,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=523, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2024-11-22 21:19:28,773 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 52 predicate places. [2024-11-22 21:19:28,773 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 523 flow [2024-11-22 21:19:28,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:28,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:28,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:28,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:19:28,775 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:28,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash -19047919, now seen corresponding path program 1 times [2024-11-22 21:19:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:28,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771792528] [2024-11-22 21:19:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:28,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:28,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771792528] [2024-11-22 21:19:28,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771792528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:28,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525296053] [2024-11-22 21:19:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:28,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:28,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:28,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:19:28,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:19:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:29,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 21:19:29,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:19:29,117 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:19:29,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525296053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:29,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:19:29,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-22 21:19:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418352204] [2024-11-22 21:19:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:29,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:19:29,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:29,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:29,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:29,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:29,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:30,165 INFO L124 PetriNetUnfolderBase]: 3504/7050 cut-off events. [2024-11-22 21:19:30,165 INFO L125 PetriNetUnfolderBase]: For 6735/6735 co-relation queries the response was YES. [2024-11-22 21:19:30,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20251 conditions, 7050 events. 3504/7050 cut-off events. For 6735/6735 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 46089 event pairs, 2843 based on Foata normal form. 19/6839 useless extension candidates. Maximal degree in co-relation 16643. Up to 6094 conditions per place. [2024-11-22 21:19:30,240 INFO L140 encePairwiseOnDemand]: 52/54 looper letters, 69 selfloop transitions, 1 changer transitions 2/82 dead transitions. [2024-11-22 21:19:30,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 82 transitions, 663 flow [2024-11-22 21:19:30,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:19:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:19:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-22 21:19:30,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-11-22 21:19:30,242 INFO L175 Difference]: Start difference. First operand has 101 places, 83 transitions, 523 flow. Second operand 3 states and 77 transitions. [2024-11-22 21:19:30,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 82 transitions, 663 flow [2024-11-22 21:19:30,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 82 transitions, 643 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-22 21:19:30,276 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 498 flow [2024-11-22 21:19:30,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-11-22 21:19:30,277 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 47 predicate places. [2024-11-22 21:19:30,277 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 498 flow [2024-11-22 21:19:30,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:30,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:30,278 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:30,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:19:30,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 21:19:30,479 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:30,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:30,479 INFO L85 PathProgramCache]: Analyzing trace with hash 310566865, now seen corresponding path program 1 times [2024-11-22 21:19:30,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:30,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855026023] [2024-11-22 21:19:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:30,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:30,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:30,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855026023] [2024-11-22 21:19:30,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855026023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:30,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978337071] [2024-11-22 21:19:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:30,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:30,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:30,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:19:30,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:19:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:31,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 21:19:31,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:31,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978337071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:31,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:31,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-22 21:19:31,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664239738] [2024-11-22 21:19:31,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:31,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 21:19:31,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:31,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 21:19:31,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-22 21:19:31,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-22 21:19:31,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 498 flow. Second operand has 17 states, 17 states have (on average 18.41176470588235) internal successors, (313), 17 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:31,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:31,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-22 21:19:31,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:34,450 INFO L124 PetriNetUnfolderBase]: 7062/14006 cut-off events. [2024-11-22 21:19:34,450 INFO L125 PetriNetUnfolderBase]: For 12715/12719 co-relation queries the response was YES. [2024-11-22 21:19:34,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39810 conditions, 14006 events. 7062/14006 cut-off events. For 12715/12719 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 98256 event pairs, 974 based on Foata normal form. 154/13706 useless extension candidates. Maximal degree in co-relation 39775. Up to 2318 conditions per place. [2024-11-22 21:19:34,665 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 313 selfloop transitions, 57 changer transitions 0/378 dead transitions. [2024-11-22 21:19:34,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 378 transitions, 2639 flow [2024-11-22 21:19:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 21:19:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 21:19:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 580 transitions. [2024-11-22 21:19:34,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-22 21:19:34,668 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 498 flow. Second operand 20 states and 580 transitions. [2024-11-22 21:19:34,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 378 transitions, 2639 flow [2024-11-22 21:19:34,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 378 transitions, 2636 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:34,762 INFO L231 Difference]: Finished difference. Result has 124 places, 123 transitions, 1009 flow [2024-11-22 21:19:34,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1009, PETRI_PLACES=124, PETRI_TRANSITIONS=123} [2024-11-22 21:19:34,764 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 75 predicate places. [2024-11-22 21:19:34,765 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 1009 flow [2024-11-22 21:19:34,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.41176470588235) internal successors, (313), 17 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:34,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:34,766 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:34,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:19:34,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:34,970 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:34,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:34,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1409946811, now seen corresponding path program 1 times [2024-11-22 21:19:34,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:34,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163010449] [2024-11-22 21:19:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:36,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:36,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163010449] [2024-11-22 21:19:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163010449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:36,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956524301] [2024-11-22 21:19:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:36,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:36,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:36,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:19:36,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:19:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:36,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-22 21:19:36,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:36,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-22 21:19:36,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2024-11-22 21:19:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:19:37,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:19:37,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956524301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:37,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:19:37,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2024-11-22 21:19:37,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068800968] [2024-11-22 21:19:37,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:37,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:19:37,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:37,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:19:37,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:19:37,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-22 21:19:37,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 123 transitions, 1009 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:37,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:37,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-22 21:19:37,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:40,429 INFO L124 PetriNetUnfolderBase]: 10165/20130 cut-off events. [2024-11-22 21:19:40,430 INFO L125 PetriNetUnfolderBase]: For 32573/32573 co-relation queries the response was YES. [2024-11-22 21:19:40,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62977 conditions, 20130 events. 10165/20130 cut-off events. For 32573/32573 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 153231 event pairs, 1401 based on Foata normal form. 0/19588 useless extension candidates. Maximal degree in co-relation 62929. Up to 4323 conditions per place. [2024-11-22 21:19:40,701 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 148 selfloop transitions, 140 changer transitions 0/298 dead transitions. [2024-11-22 21:19:40,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 298 transitions, 2632 flow [2024-11-22 21:19:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 21:19:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-22 21:19:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 416 transitions. [2024-11-22 21:19:40,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4531590413943355 [2024-11-22 21:19:40,703 INFO L175 Difference]: Start difference. First operand has 124 places, 123 transitions, 1009 flow. Second operand 17 states and 416 transitions. [2024-11-22 21:19:40,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 298 transitions, 2632 flow [2024-11-22 21:19:40,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 298 transitions, 2475 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-11-22 21:19:40,955 INFO L231 Difference]: Finished difference. Result has 141 places, 189 transitions, 1891 flow [2024-11-22 21:19:40,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1891, PETRI_PLACES=141, PETRI_TRANSITIONS=189} [2024-11-22 21:19:40,957 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 92 predicate places. [2024-11-22 21:19:40,957 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 189 transitions, 1891 flow [2024-11-22 21:19:40,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:40,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:40,958 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:40,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:19:41,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:41,162 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:41,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:41,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1629450831, now seen corresponding path program 1 times [2024-11-22 21:19:41,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:41,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394692625] [2024-11-22 21:19:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:41,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:19:41,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:41,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394692625] [2024-11-22 21:19:41,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394692625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:41,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882941416] [2024-11-22 21:19:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:41,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:41,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:41,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:19:41,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:19:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:41,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 21:19:41,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:19:42,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:19:42,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882941416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:42,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:42,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-22 21:19:42,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241545234] [2024-11-22 21:19:42,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:42,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 21:19:42,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 21:19:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-22 21:19:42,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-22 21:19:42,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 189 transitions, 1891 flow. Second operand has 17 states, 17 states have (on average 19.647058823529413) internal successors, (334), 17 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:42,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:42,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-22 21:19:42,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:46,470 INFO L124 PetriNetUnfolderBase]: 10541/20500 cut-off events. [2024-11-22 21:19:46,470 INFO L125 PetriNetUnfolderBase]: For 37696/37706 co-relation queries the response was YES. [2024-11-22 21:19:46,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67086 conditions, 20500 events. 10541/20500 cut-off events. For 37696/37706 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 151602 event pairs, 1963 based on Foata normal form. 148/20186 useless extension candidates. Maximal degree in co-relation 67035. Up to 3480 conditions per place. [2024-11-22 21:19:46,659 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 394 selfloop transitions, 149 changer transitions 0/551 dead transitions. [2024-11-22 21:19:46,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 551 transitions, 5117 flow [2024-11-22 21:19:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 21:19:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 21:19:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 684 transitions. [2024-11-22 21:19:46,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-11-22 21:19:46,662 INFO L175 Difference]: Start difference. First operand has 141 places, 189 transitions, 1891 flow. Second operand 25 states and 684 transitions. [2024-11-22 21:19:46,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 551 transitions, 5117 flow [2024-11-22 21:19:47,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 551 transitions, 4718 flow, removed 199 selfloop flow, removed 1 redundant places. [2024-11-22 21:19:47,039 INFO L231 Difference]: Finished difference. Result has 176 places, 269 transitions, 2918 flow [2024-11-22 21:19:47,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2918, PETRI_PLACES=176, PETRI_TRANSITIONS=269} [2024-11-22 21:19:47,040 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 127 predicate places. [2024-11-22 21:19:47,040 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 269 transitions, 2918 flow [2024-11-22 21:19:47,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.647058823529413) internal successors, (334), 17 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:47,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:47,041 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:47,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:19:47,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 21:19:47,245 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:47,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash -344761274, now seen corresponding path program 1 times [2024-11-22 21:19:47,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:47,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722956830] [2024-11-22 21:19:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:47,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:47,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:47,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722956830] [2024-11-22 21:19:47,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722956830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:19:47,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402078011] [2024-11-22 21:19:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:47,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:19:47,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:19:47,394 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:19:47,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:19:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:47,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 21:19:47,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:19:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:47,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:19:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:19:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402078011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:19:47,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:19:47,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 21:19:47,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983916466] [2024-11-22 21:19:47,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:19:47,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:19:47,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:47,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:19:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:19:47,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:47,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 269 transitions, 2918 flow. Second operand has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:47,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:47,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:47,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:19:53,095 INFO L124 PetriNetUnfolderBase]: 16165/31712 cut-off events. [2024-11-22 21:19:53,095 INFO L125 PetriNetUnfolderBase]: For 86426/86464 co-relation queries the response was YES. [2024-11-22 21:19:53,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109385 conditions, 31712 events. 16165/31712 cut-off events. For 86426/86464 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 248614 event pairs, 4515 based on Foata normal form. 1098/32558 useless extension candidates. Maximal degree in co-relation 109321. Up to 5667 conditions per place. [2024-11-22 21:19:53,492 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 579 selfloop transitions, 168 changer transitions 0/756 dead transitions. [2024-11-22 21:19:53,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 756 transitions, 8603 flow [2024-11-22 21:19:53,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 21:19:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 21:19:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 413 transitions. [2024-11-22 21:19:53,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952861952861953 [2024-11-22 21:19:53,495 INFO L175 Difference]: Start difference. First operand has 176 places, 269 transitions, 2918 flow. Second operand 11 states and 413 transitions. [2024-11-22 21:19:53,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 756 transitions, 8603 flow [2024-11-22 21:19:54,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 756 transitions, 8030 flow, removed 219 selfloop flow, removed 10 redundant places. [2024-11-22 21:19:54,165 INFO L231 Difference]: Finished difference. Result has 185 places, 355 transitions, 4438 flow [2024-11-22 21:19:54,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4438, PETRI_PLACES=185, PETRI_TRANSITIONS=355} [2024-11-22 21:19:54,166 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-11-22 21:19:54,166 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 355 transitions, 4438 flow [2024-11-22 21:19:54,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:54,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:19:54,167 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:19:54,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 21:19:54,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 21:19:54,368 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:19:54,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:19:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash -270244294, now seen corresponding path program 1 times [2024-11-22 21:19:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:19:54,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548439930] [2024-11-22 21:19:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:19:54,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:19:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:19:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-22 21:19:54,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:19:54,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548439930] [2024-11-22 21:19:54,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548439930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:19:54,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:19:54,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:19:54,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589480169] [2024-11-22 21:19:54,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:19:54,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:19:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:19:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:19:54,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:19:54,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:19:54,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 355 transitions, 4438 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:19:54,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:19:54,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:19:54,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:20:00,092 INFO L124 PetriNetUnfolderBase]: 14540/28370 cut-off events. [2024-11-22 21:20:00,093 INFO L125 PetriNetUnfolderBase]: For 85050/85095 co-relation queries the response was YES. [2024-11-22 21:20:00,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101816 conditions, 28370 events. 14540/28370 cut-off events. For 85050/85095 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 217849 event pairs, 10773 based on Foata normal form. 413/28664 useless extension candidates. Maximal degree in co-relation 101751. Up to 22609 conditions per place. [2024-11-22 21:20:00,492 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 270 selfloop transitions, 77 changer transitions 0/356 dead transitions. [2024-11-22 21:20:00,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 356 transitions, 4985 flow [2024-11-22 21:20:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:20:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:20:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-22 21:20:00,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-22 21:20:00,493 INFO L175 Difference]: Start difference. First operand has 185 places, 355 transitions, 4438 flow. Second operand 3 states and 96 transitions. [2024-11-22 21:20:00,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 356 transitions, 4985 flow [2024-11-22 21:20:00,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 356 transitions, 4892 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-22 21:20:00,982 INFO L231 Difference]: Finished difference. Result has 185 places, 327 transitions, 4308 flow [2024-11-22 21:20:00,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3906, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4308, PETRI_PLACES=185, PETRI_TRANSITIONS=327} [2024-11-22 21:20:00,983 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-11-22 21:20:00,983 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 327 transitions, 4308 flow [2024-11-22 21:20:00,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:20:00,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:20:00,983 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:20:00,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:20:00,984 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:20:00,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:20:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1586199029, now seen corresponding path program 1 times [2024-11-22 21:20:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:20:00,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766597339] [2024-11-22 21:20:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:20:00,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:20:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:20:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:20:02,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:20:02,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766597339] [2024-11-22 21:20:02,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766597339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:20:02,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622370000] [2024-11-22 21:20:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:20:02,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:20:02,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:20:02,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:20:02,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:20:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:20:02,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-22 21:20:02,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:20:02,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-22 21:20:02,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:20:02,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2024-11-22 21:20:03,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2024-11-22 21:20:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:20:03,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:20:03,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2024-11-22 21:20:03,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:20:03,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622370000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:20:03,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:20:03,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-22 21:20:03,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604347385] [2024-11-22 21:20:03,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:20:03,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 21:20:03,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:20:03,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 21:20:03,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1078, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 21:20:04,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-22 21:20:04,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 327 transitions, 4308 flow. Second operand has 35 states, 35 states have (on average 18.0) internal successors, (630), 35 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:20:04,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:20:04,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-22 21:20:04,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:20:14,017 INFO L124 PetriNetUnfolderBase]: 19146/37564 cut-off events. [2024-11-22 21:20:14,017 INFO L125 PetriNetUnfolderBase]: For 119040/119040 co-relation queries the response was YES. [2024-11-22 21:20:14,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135636 conditions, 37564 events. 19146/37564 cut-off events. For 119040/119040 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 290897 event pairs, 2324 based on Foata normal form. 0/37451 useless extension candidates. Maximal degree in co-relation 135573. Up to 8001 conditions per place. [2024-11-22 21:20:14,700 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 380 selfloop transitions, 385 changer transitions 26/800 dead transitions. [2024-11-22 21:20:14,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 800 transitions, 8918 flow [2024-11-22 21:20:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-22 21:20:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-11-22 21:20:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1212 transitions. [2024-11-22 21:20:14,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4156378600823045 [2024-11-22 21:20:14,705 INFO L175 Difference]: Start difference. First operand has 185 places, 327 transitions, 4308 flow. Second operand 54 states and 1212 transitions. [2024-11-22 21:20:14,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 800 transitions, 8918 flow [2024-11-22 21:20:15,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 800 transitions, 8630 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-11-22 21:20:15,578 INFO L231 Difference]: Finished difference. Result has 241 places, 438 transitions, 6367 flow [2024-11-22 21:20:15,579 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4132, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=6367, PETRI_PLACES=241, PETRI_TRANSITIONS=438} [2024-11-22 21:20:15,579 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 192 predicate places. [2024-11-22 21:20:15,579 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 438 transitions, 6367 flow [2024-11-22 21:20:15,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 18.0) internal successors, (630), 35 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:20:15,580 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:20:15,580 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:20:15,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 21:20:15,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:20:15,781 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-22 21:20:15,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:20:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1071943235, now seen corresponding path program 1 times [2024-11-22 21:20:15,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:20:15,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941148002] [2024-11-22 21:20:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:20:15,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:20:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:20:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:20:16,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:20:16,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941148002] [2024-11-22 21:20:16,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941148002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:20:16,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802730651] [2024-11-22 21:20:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:20:16,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:20:16,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:20:16,367 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:20:16,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:20:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:20:16,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 21:20:16,591 INFO L278 TraceCheckSpWp]: Computing forward predicates...