./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/queue_longest.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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:19:04,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:19:04,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:19:04,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:19:04,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:19:04,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:19:04,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:19:04,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:19:04,812 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:19:04,812 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:19:04,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:19:04,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:19:04,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:19:04,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:19:04,814 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:19:04,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:19:04,815 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:19:04,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:19:04,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:19:04,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:19:04,816 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:19:04,820 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:19:04,820 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:19:04,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:19:04,821 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:19:04,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:19:04,821 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:19:04,821 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:19:04,822 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:19:04,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:19:04,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:19:04,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:19:04,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:19:04,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:19:04,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:19:04,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:19:04,823 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:19:04,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:19:04,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:19:04,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:19:04,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:19:04,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:19:04,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2024-11-19 09:19:05,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:19:05,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:19:05,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:19:05,143 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:19:05,143 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:19:05,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longest.i [2024-11-19 09:19:06,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:19:06,908 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:19:06,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-11-19 09:19:06,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3fc5deb9/2e96dd84d6c445f5acf032e34b1ac54f/FLAG5465ab1d0 [2024-11-19 09:19:07,189 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3fc5deb9/2e96dd84d6c445f5acf032e34b1ac54f [2024-11-19 09:19:07,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:19:07,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:19:07,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:19:07,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:19:07,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:19:07,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:07,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347cff75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07, skipping insertion in model container [2024-11-19 09:19:07,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:07,261 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:19:07,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:19:07,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:19:07,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:19:07,995 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:19:07,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07 WrapperNode [2024-11-19 09:19:07,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:19:07,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:19:07,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:19:07,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:19:08,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,220 INFO L138 Inliner]: procedures = 274, calls = 1659, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1846 [2024-11-19 09:19:08,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:19:08,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:19:08,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:19:08,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:19:08,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,259 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,309 INFO L175 MemorySlicer]: Split 1644 memory accesses to 4 slices as follows [2, 834, 5, 803]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 803, 5, 800]. The 16 writes are split as follows [0, 14, 0, 2]. [2024-11-19 09:19:08,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:19:08,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:19:08,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:19:08,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:19:08,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (1/1) ... [2024-11-19 09:19:08,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:19:08,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:19:08,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:19:08,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:19:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 09:19:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 09:19:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 09:19:08,510 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 09:19:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:19:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:19:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:19:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 09:19:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 09:19:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:19:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:19:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 09:19:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 09:19:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:19:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:19:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:19:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:19:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 09:19:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 09:19:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:19:08,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:19:08,516 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:19:08,703 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:19:08,705 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:19:10,844 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:19:10,844 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:19:41,802 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:19:41,804 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:19:41,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:19:41 BoogieIcfgContainer [2024-11-19 09:19:41,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:19:41,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:19:41,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:19:41,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:19:41,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:19:07" (1/3) ... [2024-11-19 09:19:41,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa3f30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:19:41, skipping insertion in model container [2024-11-19 09:19:41,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:19:07" (2/3) ... [2024-11-19 09:19:41,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa3f30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:19:41, skipping insertion in model container [2024-11-19 09:19:41,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:19:41" (3/3) ... [2024-11-19 09:19:41,815 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2024-11-19 09:19:41,833 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:19:41,834 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-19 09:19:41,834 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:19:41,986 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:19:42,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 358 flow [2024-11-19 09:19:42,175 INFO L124 PetriNetUnfolderBase]: 14/170 cut-off events. [2024-11-19 09:19:42,175 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:19:42,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 14/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 524 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2024-11-19 09:19:42,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 172 transitions, 358 flow [2024-11-19 09:19:42,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 169 transitions, 350 flow [2024-11-19 09:19:42,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:19:42,214 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;@23290127, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:19:42,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-11-19 09:19:42,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:19:42,264 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-19 09:19:42,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:19:42,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:42,265 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-19 09:19:42,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:42,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:42,271 INFO L85 PathProgramCache]: Analyzing trace with hash 124458, now seen corresponding path program 1 times [2024-11-19 09:19:42,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:42,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496767012] [2024-11-19 09:19:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:43,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:43,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496767012] [2024-11-19 09:19:43,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496767012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:43,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:43,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904779717] [2024-11-19 09:19:43,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:43,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:43,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:43,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-19 09:19:43,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:43,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:43,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-19 09:19:43,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:44,545 INFO L124 PetriNetUnfolderBase]: 1744/4653 cut-off events. [2024-11-19 09:19:44,545 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 09:19:44,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7479 conditions, 4653 events. 1744/4653 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37036 event pairs, 1393 based on Foata normal form. 182/3587 useless extension candidates. Maximal degree in co-relation 7362. Up to 2745 conditions per place. [2024-11-19 09:19:44,596 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 58 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-11-19 09:19:44,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 154 transitions, 440 flow [2024-11-19 09:19:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2024-11-19 09:19:44,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7015503875968992 [2024-11-19 09:19:44,619 INFO L175 Difference]: Start difference. First operand has 162 places, 169 transitions, 350 flow. Second operand 3 states and 362 transitions. [2024-11-19 09:19:44,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 154 transitions, 440 flow [2024-11-19 09:19:44,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 432 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:19:44,631 INFO L231 Difference]: Finished difference. Result has 151 places, 154 transitions, 316 flow [2024-11-19 09:19:44,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=151, PETRI_TRANSITIONS=154} [2024-11-19 09:19:44,639 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -11 predicate places. [2024-11-19 09:19:44,640 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 154 transitions, 316 flow [2024-11-19 09:19:44,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:44,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:44,641 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-19 09:19:44,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:19:44,641 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:44,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash 124459, now seen corresponding path program 1 times [2024-11-19 09:19:44,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:44,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758486193] [2024-11-19 09:19:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:44,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:45,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758486193] [2024-11-19 09:19:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758486193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:45,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:45,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586241628] [2024-11-19 09:19:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:45,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:45,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-19 09:19:45,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 154 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:45,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:45,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-19 09:19:45,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:46,556 INFO L124 PetriNetUnfolderBase]: 1744/4650 cut-off events. [2024-11-19 09:19:46,556 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-19 09:19:46,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7430 conditions, 4650 events. 1744/4650 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37031 event pairs, 1393 based on Foata normal form. 3/3407 useless extension candidates. Maximal degree in co-relation 7419. Up to 2745 conditions per place. [2024-11-19 09:19:46,593 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 58 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-11-19 09:19:46,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 430 flow [2024-11-19 09:19:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-11-19 09:19:46,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2024-11-19 09:19:46,596 INFO L175 Difference]: Start difference. First operand has 151 places, 154 transitions, 316 flow. Second operand 3 states and 357 transitions. [2024-11-19 09:19:46,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 430 flow [2024-11-19 09:19:46,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:46,601 INFO L231 Difference]: Finished difference. Result has 148 places, 151 transitions, 310 flow [2024-11-19 09:19:46,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=148, PETRI_TRANSITIONS=151} [2024-11-19 09:19:46,602 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -14 predicate places. [2024-11-19 09:19:46,602 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 151 transitions, 310 flow [2024-11-19 09:19:46,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:46,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:46,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:46,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:19:46,604 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:46,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:46,604 INFO L85 PathProgramCache]: Analyzing trace with hash -583390690, now seen corresponding path program 1 times [2024-11-19 09:19:46,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:46,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064077761] [2024-11-19 09:19:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:46,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:47,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:47,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064077761] [2024-11-19 09:19:47,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064077761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:47,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:47,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:47,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060766200] [2024-11-19 09:19:47,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:47,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:19:47,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:47,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:19:47,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:19:47,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-19 09:19:47,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 151 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:47,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:47,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-19 09:19:47,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:48,113 INFO L124 PetriNetUnfolderBase]: 1744/4648 cut-off events. [2024-11-19 09:19:48,114 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 09:19:48,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 4648 events. 1744/4648 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36978 event pairs, 1393 based on Foata normal form. 0/3405 useless extension candidates. Maximal degree in co-relation 7418. Up to 2744 conditions per place. [2024-11-19 09:19:48,152 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 60 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-11-19 09:19:48,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 149 transitions, 432 flow [2024-11-19 09:19:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 437 transitions. [2024-11-19 09:19:48,155 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6351744186046512 [2024-11-19 09:19:48,155 INFO L175 Difference]: Start difference. First operand has 148 places, 151 transitions, 310 flow. Second operand 4 states and 437 transitions. [2024-11-19 09:19:48,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 149 transitions, 432 flow [2024-11-19 09:19:48,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 149 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:48,159 INFO L231 Difference]: Finished difference. Result has 147 places, 149 transitions, 308 flow [2024-11-19 09:19:48,160 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=147, PETRI_TRANSITIONS=149} [2024-11-19 09:19:48,162 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -15 predicate places. [2024-11-19 09:19:48,163 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 149 transitions, 308 flow [2024-11-19 09:19:48,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:48,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:48,163 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:48,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:19:48,164 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:48,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:48,164 INFO L85 PathProgramCache]: Analyzing trace with hash -583390689, now seen corresponding path program 1 times [2024-11-19 09:19:48,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:48,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922834461] [2024-11-19 09:19:48,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:48,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:49,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:49,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922834461] [2024-11-19 09:19:49,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922834461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:49,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:49,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:49,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004122777] [2024-11-19 09:19:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:49,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:49,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:49,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:49,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:49,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:49,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 149 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:49,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:49,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:49,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:49,815 INFO L124 PetriNetUnfolderBase]: 1744/4646 cut-off events. [2024-11-19 09:19:49,816 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-19 09:19:49,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 4646 events. 1744/4646 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36986 event pairs, 1393 based on Foata normal form. 2/3405 useless extension candidates. Maximal degree in co-relation 7412. Up to 2744 conditions per place. [2024-11-19 09:19:49,858 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 3 changer transitions 0/147 dead transitions. [2024-11-19 09:19:49,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 147 transitions, 424 flow [2024-11-19 09:19:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2024-11-19 09:19:49,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6656976744186046 [2024-11-19 09:19:49,861 INFO L175 Difference]: Start difference. First operand has 147 places, 149 transitions, 308 flow. Second operand 4 states and 458 transitions. [2024-11-19 09:19:49,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 147 transitions, 424 flow [2024-11-19 09:19:49,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 147 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:49,865 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 304 flow [2024-11-19 09:19:49,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2024-11-19 09:19:49,867 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -17 predicate places. [2024-11-19 09:19:49,867 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 304 flow [2024-11-19 09:19:49,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:49,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:49,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:49,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:19:49,869 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:49,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash 298605087, now seen corresponding path program 1 times [2024-11-19 09:19:49,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:49,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67017983] [2024-11-19 09:19:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:49,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:50,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:50,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67017983] [2024-11-19 09:19:50,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67017983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:50,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:50,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:19:50,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075118254] [2024-11-19 09:19:50,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:50,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:19:50,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:50,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:19:50,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:19:50,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2024-11-19 09:19:50,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:50,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:50,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2024-11-19 09:19:50,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:51,459 INFO L124 PetriNetUnfolderBase]: 2019/4463 cut-off events. [2024-11-19 09:19:51,459 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-19 09:19:51,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7727 conditions, 4463 events. 2019/4463 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 31627 event pairs, 705 based on Foata normal form. 0/3899 useless extension candidates. Maximal degree in co-relation 7710. Up to 1807 conditions per place. [2024-11-19 09:19:51,485 INFO L140 encePairwiseOnDemand]: 150/172 looper letters, 81 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-11-19 09:19:51,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 150 transitions, 485 flow [2024-11-19 09:19:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:19:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:19:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2024-11-19 09:19:51,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-19 09:19:51,488 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 304 flow. Second operand 5 states and 473 transitions. [2024-11-19 09:19:51,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 150 transitions, 485 flow [2024-11-19 09:19:51,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 150 transitions, 479 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:51,492 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 278 flow [2024-11-19 09:19:51,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2024-11-19 09:19:51,494 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -32 predicate places. [2024-11-19 09:19:51,495 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 278 flow [2024-11-19 09:19:51,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:51,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:51,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:51,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:19:51,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:51,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash 298605088, now seen corresponding path program 1 times [2024-11-19 09:19:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397473612] [2024-11-19 09:19:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:51,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397473612] [2024-11-19 09:19:52,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397473612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:52,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:52,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:52,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131130396] [2024-11-19 09:19:52,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:52,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:52,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:52,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:52,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:52,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 172 [2024-11-19 09:19:52,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:52,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:52,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 172 [2024-11-19 09:19:52,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:52,917 INFO L124 PetriNetUnfolderBase]: 1703/3676 cut-off events. [2024-11-19 09:19:52,917 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-19 09:19:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6548 conditions, 3676 events. 1703/3676 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 24500 event pairs, 702 based on Foata normal form. 204/3341 useless extension candidates. Maximal degree in co-relation 2518. Up to 1414 conditions per place. [2024-11-19 09:19:52,939 INFO L140 encePairwiseOnDemand]: 153/172 looper letters, 74 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2024-11-19 09:19:52,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 136 transitions, 447 flow [2024-11-19 09:19:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2024-11-19 09:19:52,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6409883720930233 [2024-11-19 09:19:52,941 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 278 flow. Second operand 4 states and 441 transitions. [2024-11-19 09:19:52,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 136 transitions, 447 flow [2024-11-19 09:19:52,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 136 transitions, 435 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:19:52,947 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 248 flow [2024-11-19 09:19:52,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2024-11-19 09:19:52,948 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -47 predicate places. [2024-11-19 09:19:52,948 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 248 flow [2024-11-19 09:19:52,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:52,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:52,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:52,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:19:52,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:52,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash 666827081, now seen corresponding path program 1 times [2024-11-19 09:19:52,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870719305] [2024-11-19 09:19:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:52,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:55,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:55,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870719305] [2024-11-19 09:19:55,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870719305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:55,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:55,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:19:55,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479531181] [2024-11-19 09:19:55,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:55,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:19:55,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:55,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:19:55,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:19:55,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 172 [2024-11-19 09:19:55,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:55,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:55,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 172 [2024-11-19 09:19:55,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:56,461 INFO L124 PetriNetUnfolderBase]: 2502/5392 cut-off events. [2024-11-19 09:19:56,461 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-19 09:19:56,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 5392 events. 2502/5392 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 38728 event pairs, 536 based on Foata normal form. 0/4394 useless extension candidates. Maximal degree in co-relation 3717. Up to 3436 conditions per place. [2024-11-19 09:19:56,492 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 125 selfloop transitions, 11 changer transitions 0/184 dead transitions. [2024-11-19 09:19:56,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 184 transitions, 659 flow [2024-11-19 09:19:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:19:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:19:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2024-11-19 09:19:56,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5506644518272426 [2024-11-19 09:19:56,496 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 248 flow. Second operand 7 states and 663 transitions. [2024-11-19 09:19:56,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 184 transitions, 659 flow [2024-11-19 09:19:56,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 184 transitions, 647 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:56,504 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 312 flow [2024-11-19 09:19:56,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=312, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2024-11-19 09:19:56,505 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -40 predicate places. [2024-11-19 09:19:56,505 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 312 flow [2024-11-19 09:19:56,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:56,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:56,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:56,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:19:56,506 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:56,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash 533229479, now seen corresponding path program 1 times [2024-11-19 09:19:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:56,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732404027] [2024-11-19 09:19:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:56,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:56,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:56,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732404027] [2024-11-19 09:19:56,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732404027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:56,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:56,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:19:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872122129] [2024-11-19 09:19:56,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:56,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:19:56,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:19:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:19:57,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 172 [2024-11-19 09:19:57,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:57,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:57,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 172 [2024-11-19 09:19:57,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:58,048 INFO L124 PetriNetUnfolderBase]: 2427/5009 cut-off events. [2024-11-19 09:19:58,048 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-11-19 09:19:58,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9367 conditions, 5009 events. 2427/5009 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 34301 event pairs, 906 based on Foata normal form. 87/4642 useless extension candidates. Maximal degree in co-relation 9056. Up to 2023 conditions per place. [2024-11-19 09:19:58,077 INFO L140 encePairwiseOnDemand]: 160/172 looper letters, 109 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2024-11-19 09:19:58,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 158 transitions, 621 flow [2024-11-19 09:19:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:19:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:19:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 529 transitions. [2024-11-19 09:19:58,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6151162790697674 [2024-11-19 09:19:58,082 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 312 flow. Second operand 5 states and 529 transitions. [2024-11-19 09:19:58,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 158 transitions, 621 flow [2024-11-19 09:19:58,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 158 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:58,088 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 302 flow [2024-11-19 09:19:58,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2024-11-19 09:19:58,089 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -45 predicate places. [2024-11-19 09:19:58,089 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 302 flow [2024-11-19 09:19:58,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:58,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:58,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:58,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:19:58,090 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:58,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:58,090 INFO L85 PathProgramCache]: Analyzing trace with hash 533229480, now seen corresponding path program 1 times [2024-11-19 09:19:58,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:58,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774380293] [2024-11-19 09:19:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:58,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:58,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:58,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774380293] [2024-11-19 09:19:58,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774380293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:58,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:58,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:58,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988981406] [2024-11-19 09:19:58,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:58,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:58,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:58,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:58,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:58,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-19 09:19:58,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:58,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:58,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-19 09:19:58,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:58,953 INFO L124 PetriNetUnfolderBase]: 1382/3055 cut-off events. [2024-11-19 09:19:58,953 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-19 09:19:58,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 3055 events. 1382/3055 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17488 event pairs, 703 based on Foata normal form. 55/2727 useless extension candidates. Maximal degree in co-relation 5504. Up to 1211 conditions per place. [2024-11-19 09:19:58,975 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 81 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-19 09:19:58,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 132 transitions, 470 flow [2024-11-19 09:19:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2024-11-19 09:19:58,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.751937984496124 [2024-11-19 09:19:58,978 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 302 flow. Second operand 3 states and 388 transitions. [2024-11-19 09:19:58,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 132 transitions, 470 flow [2024-11-19 09:19:58,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 132 transitions, 439 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-19 09:19:58,984 INFO L231 Difference]: Finished difference. Result has 107 places, 109 transitions, 235 flow [2024-11-19 09:19:58,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=107, PETRI_TRANSITIONS=109} [2024-11-19 09:19:58,986 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -55 predicate places. [2024-11-19 09:19:58,986 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 109 transitions, 235 flow [2024-11-19 09:19:58,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:58,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:58,987 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:58,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:19:58,987 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:58,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1537482823, now seen corresponding path program 1 times [2024-11-19 09:19:58,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:58,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332901245] [2024-11-19 09:19:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:58,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:59,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:59,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332901245] [2024-11-19 09:19:59,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332901245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:59,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:59,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:59,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356499262] [2024-11-19 09:19:59,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:59,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:59,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:59,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:59,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-19 09:19:59,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:19:59,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:59,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-19 09:19:59,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:59,989 INFO L124 PetriNetUnfolderBase]: 1392/3119 cut-off events. [2024-11-19 09:19:59,989 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-19 09:19:59,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 3119 events. 1392/3119 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18133 event pairs, 1089 based on Foata normal form. 0/2730 useless extension candidates. Maximal degree in co-relation 5497. Up to 2216 conditions per place. [2024-11-19 09:20:00,005 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 60 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2024-11-19 09:20:00,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 355 flow [2024-11-19 09:20:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:20:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:20:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2024-11-19 09:20:00,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6996124031007752 [2024-11-19 09:20:00,008 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 235 flow. Second operand 3 states and 361 transitions. [2024-11-19 09:20:00,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 355 flow [2024-11-19 09:20:00,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 108 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:20:00,011 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 232 flow [2024-11-19 09:20:00,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-11-19 09:20:00,012 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -55 predicate places. [2024-11-19 09:20:00,012 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 232 flow [2024-11-19 09:20:00,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:00,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:00,013 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:00,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:20:00,014 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:20:00,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:00,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1537482824, now seen corresponding path program 1 times [2024-11-19 09:20:00,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:00,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81986218] [2024-11-19 09:20:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:00,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:00,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:00,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81986218] [2024-11-19 09:20:00,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81986218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:00,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:00,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:20:00,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700977083] [2024-11-19 09:20:00,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:00,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:20:00,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:20:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:20:00,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-19 09:20:00,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:00,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:00,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-19 09:20:00,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:00,687 INFO L124 PetriNetUnfolderBase]: 1392/3052 cut-off events. [2024-11-19 09:20:00,688 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 09:20:00,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5422 conditions, 3052 events. 1392/3052 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17376 event pairs, 1089 based on Foata normal form. 77/2795 useless extension candidates. Maximal degree in co-relation 5417. Up to 2216 conditions per place. [2024-11-19 09:20:00,727 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 60 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2024-11-19 09:20:00,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 348 flow [2024-11-19 09:20:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:20:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:20:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-11-19 09:20:00,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2024-11-19 09:20:00,731 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 232 flow. Second operand 3 states and 357 transitions. [2024-11-19 09:20:00,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 348 flow [2024-11-19 09:20:00,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:20:00,737 INFO L231 Difference]: Finished difference. Result has 105 places, 105 transitions, 227 flow [2024-11-19 09:20:00,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=105, PETRI_TRANSITIONS=105} [2024-11-19 09:20:00,738 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -57 predicate places. [2024-11-19 09:20:00,738 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 105 transitions, 227 flow [2024-11-19 09:20:00,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:00,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:00,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:00,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:20:00,739 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:20:00,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash -417323187, now seen corresponding path program 1 times [2024-11-19 09:20:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:00,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015453119] [2024-11-19 09:20:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:01,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015453119] [2024-11-19 09:20:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015453119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:01,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:20:01,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087051064] [2024-11-19 09:20:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:01,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:20:01,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:20:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:20:01,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-19 09:20:01,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 105 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:01,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:01,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-19 09:20:01,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:01,852 INFO L124 PetriNetUnfolderBase]: 1409/3045 cut-off events. [2024-11-19 09:20:01,852 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 09:20:01,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 3045 events. 1409/3045 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17104 event pairs, 1074 based on Foata normal form. 0/2747 useless extension candidates. Maximal degree in co-relation 5443. Up to 2186 conditions per place. [2024-11-19 09:20:01,864 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 68 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2024-11-19 09:20:01,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 111 transitions, 384 flow [2024-11-19 09:20:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:20:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:20:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2024-11-19 09:20:01,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-11-19 09:20:01,867 INFO L175 Difference]: Start difference. First operand has 105 places, 105 transitions, 227 flow. Second operand 5 states and 538 transitions. [2024-11-19 09:20:01,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 111 transitions, 384 flow [2024-11-19 09:20:01,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:20:01,870 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 230 flow [2024-11-19 09:20:01,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2024-11-19 09:20:01,871 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -56 predicate places. [2024-11-19 09:20:01,871 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 230 flow [2024-11-19 09:20:01,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:01,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:01,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:01,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:20:01,872 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:20:01,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash -417323186, now seen corresponding path program 1 times [2024-11-19 09:20:01,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:01,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709929312] [2024-11-19 09:20:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709929312] [2024-11-19 09:20:02,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709929312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:02,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:02,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:20:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415796615] [2024-11-19 09:20:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:02,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:20:02,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:02,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:20:02,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:20:02,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:20:02,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:02,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:02,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:20:02,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:02,958 INFO L124 PetriNetUnfolderBase]: 1392/3004 cut-off events. [2024-11-19 09:20:02,958 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-19 09:20:02,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5401 conditions, 3004 events. 1392/3004 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16788 event pairs, 1074 based on Foata normal form. 24/2730 useless extension candidates. Maximal degree in co-relation 5396. Up to 2187 conditions per place. [2024-11-19 09:20:02,970 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 66 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-11-19 09:20:02,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 109 transitions, 381 flow [2024-11-19 09:20:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:20:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:20:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2024-11-19 09:20:02,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-19 09:20:02,973 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 230 flow. Second operand 4 states and 466 transitions. [2024-11-19 09:20:02,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 109 transitions, 381 flow [2024-11-19 09:20:02,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 109 transitions, 373 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:20:02,975 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 224 flow [2024-11-19 09:20:02,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2024-11-19 09:20:02,976 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -59 predicate places. [2024-11-19 09:20:02,976 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 224 flow [2024-11-19 09:20:02,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:02,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:02,977 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] [2024-11-19 09:20:02,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:20:02,978 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:20:02,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:02,978 INFO L85 PathProgramCache]: Analyzing trace with hash -52145603, now seen corresponding path program 1 times [2024-11-19 09:20:02,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:02,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390947185] [2024-11-19 09:20:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:02,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:03,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:03,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390947185] [2024-11-19 09:20:03,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390947185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:03,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:03,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:20:03,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514846484] [2024-11-19 09:20:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:03,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:20:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:20:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:20:03,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-19 09:20:03,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:03,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:03,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-19 09:20:03,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:03,689 INFO L124 PetriNetUnfolderBase]: 1380/2992 cut-off events. [2024-11-19 09:20:03,690 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 09:20:03,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 2992 events. 1380/2992 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16803 event pairs, 1074 based on Foata normal form. 0/2706 useless extension candidates. Maximal degree in co-relation 5371. Up to 2176 conditions per place. [2024-11-19 09:20:03,705 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 66 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2024-11-19 09:20:03,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 108 transitions, 375 flow [2024-11-19 09:20:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:20:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:20:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2024-11-19 09:20:03,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7189922480620154 [2024-11-19 09:20:03,707 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 224 flow. Second operand 3 states and 371 transitions. [2024-11-19 09:20:03,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 108 transitions, 375 flow [2024-11-19 09:20:03,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 369 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:20:03,709 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 220 flow [2024-11-19 09:20:03,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-11-19 09:20:03,710 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -60 predicate places. [2024-11-19 09:20:03,710 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 220 flow [2024-11-19 09:20:03,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:03,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:03,711 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] [2024-11-19 09:20:03,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:20:03,711 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:20:03,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2118830185, now seen corresponding path program 1 times [2024-11-19 09:20:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:03,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984396718] [2024-11-19 09:20:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:05,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984396718] [2024-11-19 09:20:05,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984396718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:05,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:05,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 09:20:05,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485306549] [2024-11-19 09:20:05,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:05,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 09:20:05,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 09:20:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:20:05,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-19 09:20:05,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 220 flow. Second operand has 9 states, 9 states have (on average 94.44444444444444) internal successors, (850), 9 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:05,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:05,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-19 09:20:05,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:06,218 INFO L124 PetriNetUnfolderBase]: 1717/3481 cut-off events. [2024-11-19 09:20:06,218 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-19 09:20:06,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6486 conditions, 3481 events. 1717/3481 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 19037 event pairs, 388 based on Foata normal form. 0/3243 useless extension candidates. Maximal degree in co-relation 6481. Up to 2364 conditions per place. [2024-11-19 09:20:06,233 INFO L140 encePairwiseOnDemand]: 159/172 looper letters, 117 selfloop transitions, 12 changer transitions 0/160 dead transitions. [2024-11-19 09:20:06,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 160 transitions, 608 flow [2024-11-19 09:20:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:20:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:20:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 957 transitions. [2024-11-19 09:20:06,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6182170542635659 [2024-11-19 09:20:06,237 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 220 flow. Second operand 9 states and 957 transitions. [2024-11-19 09:20:06,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 160 transitions, 608 flow [2024-11-19 09:20:06,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 160 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:20:06,240 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 252 flow [2024-11-19 09:20:06,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2024-11-19 09:20:06,241 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -54 predicate places. [2024-11-19 09:20:06,241 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 252 flow [2024-11-19 09:20:06,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 94.44444444444444) internal successors, (850), 9 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:20:06,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:06,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:06,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:20:06,242 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:20:06,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:06,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1353576422, now seen corresponding path program 1 times [2024-11-19 09:20:06,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:06,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240317174] [2024-11-19 09:20:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:20:06,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:20:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:20:10,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:20:10,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240317174] [2024-11-19 09:20:10,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240317174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:20:10,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:20:10,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 09:20:10,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319993270] [2024-11-19 09:20:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:20:10,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:20:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:20:10,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:20:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182