./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:39:04,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:39:05,020 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:39:05,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:39:05,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:39:05,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:39:05,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:39:05,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:39:05,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:39:05,046 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:39:05,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:39:05,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:39:05,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:39:05,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:39:05,048 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:39:05,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:39:05,049 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:39:05,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:39:05,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:39:05,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:39:05,050 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:39:05,054 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:39:05,054 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:39:05,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:39:05,054 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:39:05,054 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:39:05,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:39:05,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:39:05,055 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:39:05,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:39:05,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:39:05,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:39:05,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:39:05,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:39:05,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:39:05,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:39:05,056 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:39:05,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:39:05,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:39:05,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:39:05,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:39:05,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:39:05,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-22 21:39:05,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:39:05,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:39:05,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:39:05,300 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:39:05,300 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:39:05,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-22 21:39:06,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:39:06,792 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:39:06,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-22 21:39:06,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c771c3c/a47f9440a9244232b3cd8268dae72c8d/FLAG246fe3850 [2024-11-22 21:39:07,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c771c3c/a47f9440a9244232b3cd8268dae72c8d [2024-11-22 21:39:07,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:39:07,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:39:07,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:39:07,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:39:07,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:39:07,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9aecc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07, skipping insertion in model container [2024-11-22 21:39:07,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:39:07,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:39:07,613 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:39:07,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:39:07,705 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:39:07,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07 WrapperNode [2024-11-22 21:39:07,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:39:07,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:39:07,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:39:07,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:39:07,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,773 INFO L138 Inliner]: procedures = 272, calls = 108, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 344 [2024-11-22 21:39:07,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:39:07,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:39:07,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:39:07,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:39:07,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,810 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 75, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 7 writes are split as follows [0, 0, 6, 1]. [2024-11-22 21:39:07,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:39:07,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:39:07,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:39:07,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:39:07,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (1/1) ... [2024-11-22 21:39:07,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:39:07,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:39:07,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:39:07,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 21:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 21:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 21:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 21:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 21:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:39:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-22 21:39:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 21:39:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:39:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:39:07,906 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:39:08,010 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:39:08,012 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:39:08,339 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:39:08,339 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:39:08,688 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:39:08,688 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-22 21:39:08,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:39:08 BoogieIcfgContainer [2024-11-22 21:39:08,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:39:08,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:39:08,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:39:08,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:39:08,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:39:07" (1/3) ... [2024-11-22 21:39:08,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3040a18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:39:08, skipping insertion in model container [2024-11-22 21:39:08,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:39:07" (2/3) ... [2024-11-22 21:39:08,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3040a18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:39:08, skipping insertion in model container [2024-11-22 21:39:08,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:39:08" (3/3) ... [2024-11-22 21:39:08,696 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-22 21:39:08,709 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:39:08,710 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-22 21:39:08,710 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:39:08,773 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-22 21:39:08,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 196 transitions, 399 flow [2024-11-22 21:39:08,868 INFO L124 PetriNetUnfolderBase]: 70/323 cut-off events. [2024-11-22 21:39:08,869 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:39:08,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 323 events. 70/323 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1886 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2024-11-22 21:39:08,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 196 transitions, 399 flow [2024-11-22 21:39:08,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 196 transitions, 399 flow [2024-11-22 21:39:08,897 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:39:08,904 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;@9675392, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:39:08,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-22 21:39:08,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:39:08,910 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-22 21:39:08,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:39:08,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:08,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-22 21:39:08,912 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-22 21:39:08,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:08,917 INFO L85 PathProgramCache]: Analyzing trace with hash 27455186, now seen corresponding path program 1 times [2024-11-22 21:39:08,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:08,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756106509] [2024-11-22 21:39:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:08,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:09,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756106509] [2024-11-22 21:39:09,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756106509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:39:09,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:39:09,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:39:09,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100671899] [2024-11-22 21:39:09,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:39:09,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:39:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:39:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:39:09,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196 [2024-11-22 21:39:09,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 196 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:09,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:09,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196 [2024-11-22 21:39:09,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:09,645 INFO L124 PetriNetUnfolderBase]: 1016/3457 cut-off events. [2024-11-22 21:39:09,646 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:39:09,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5382 conditions, 3457 events. 1016/3457 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 30765 event pairs, 861 based on Foata normal form. 708/3646 useless extension candidates. Maximal degree in co-relation 5218. Up to 1919 conditions per place. [2024-11-22 21:39:09,668 INFO L140 encePairwiseOnDemand]: 157/196 looper letters, 69 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2024-11-22 21:39:09,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 158 transitions, 465 flow [2024-11-22 21:39:09,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:39:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:39:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2024-11-22 21:39:09,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6275510204081632 [2024-11-22 21:39:09,684 INFO L175 Difference]: Start difference. First operand has 156 places, 196 transitions, 399 flow. Second operand 3 states and 369 transitions. [2024-11-22 21:39:09,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 158 transitions, 465 flow [2024-11-22 21:39:09,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 158 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:39:09,692 INFO L231 Difference]: Finished difference. Result has 156 places, 158 transitions, 333 flow [2024-11-22 21:39:09,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=156, PETRI_TRANSITIONS=158} [2024-11-22 21:39:09,696 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 0 predicate places. [2024-11-22 21:39:09,697 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 158 transitions, 333 flow [2024-11-22 21:39:09,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:09,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:09,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:39:09,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:39:09,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-22 21:39:09,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:09,700 INFO L85 PathProgramCache]: Analyzing trace with hash 851116754, now seen corresponding path program 1 times [2024-11-22 21:39:09,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:09,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483245918] [2024-11-22 21:39:09,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:09,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:09,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483245918] [2024-11-22 21:39:09,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483245918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:39:09,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372229817] [2024-11-22 21:39:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:09,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:39:09,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:39:09,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:39:09,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:39:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:09,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 21:39:09,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:39:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:09,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:39:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:09,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372229817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:39:09,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:39:09,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 21:39:09,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455250335] [2024-11-22 21:39:09,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:39:09,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:39:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:39:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:39:09,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196 [2024-11-22 21:39:09,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 158 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:09,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:09,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196 [2024-11-22 21:39:09,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:10,326 INFO L124 PetriNetUnfolderBase]: 1016/3460 cut-off events. [2024-11-22 21:39:10,327 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:39:10,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 3460 events. 1016/3460 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 30764 event pairs, 861 based on Foata normal form. 0/2941 useless extension candidates. Maximal degree in co-relation 5386. Up to 1919 conditions per place. [2024-11-22 21:39:10,342 INFO L140 encePairwiseOnDemand]: 193/196 looper letters, 69 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2024-11-22 21:39:10,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 161 transitions, 493 flow [2024-11-22 21:39:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:39:10,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:39:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 599 transitions. [2024-11-22 21:39:10,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5093537414965986 [2024-11-22 21:39:10,345 INFO L175 Difference]: Start difference. First operand has 156 places, 158 transitions, 333 flow. Second operand 6 states and 599 transitions. [2024-11-22 21:39:10,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 161 transitions, 493 flow [2024-11-22 21:39:10,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 161 transitions, 489 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 21:39:10,349 INFO L231 Difference]: Finished difference. Result has 163 places, 161 transitions, 365 flow [2024-11-22 21:39:10,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=163, PETRI_TRANSITIONS=161} [2024-11-22 21:39:10,349 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 7 predicate places. [2024-11-22 21:39:10,350 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 161 transitions, 365 flow [2024-11-22 21:39:10,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:10,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:10,350 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-22 21:39:10,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:39:10,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:39:10,555 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-22 21:39:10,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:10,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1861751086, now seen corresponding path program 2 times [2024-11-22 21:39:10,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:10,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275821393] [2024-11-22 21:39:10,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:39:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:10,574 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:39:10,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:39:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 21:39:10,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:10,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275821393] [2024-11-22 21:39:10,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275821393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:39:10,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:39:10,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:39:10,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530101458] [2024-11-22 21:39:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:39:10,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:39:10,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:39:10,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:39:10,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196 [2024-11-22 21:39:10,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 161 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:10,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:10,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196 [2024-11-22 21:39:10,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:10,946 INFO L124 PetriNetUnfolderBase]: 1069/3541 cut-off events. [2024-11-22 21:39:10,946 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 21:39:10,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5590 conditions, 3541 events. 1069/3541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 31432 event pairs, 861 based on Foata normal form. 0/3059 useless extension candidates. Maximal degree in co-relation 5556. Up to 1915 conditions per place. [2024-11-22 21:39:10,961 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 96 selfloop transitions, 2 changer transitions 0/181 dead transitions. [2024-11-22 21:39:10,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 181 transitions, 601 flow [2024-11-22 21:39:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:39:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:39:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-11-22 21:39:10,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5867346938775511 [2024-11-22 21:39:10,962 INFO L175 Difference]: Start difference. First operand has 163 places, 161 transitions, 365 flow. Second operand 3 states and 345 transitions. [2024-11-22 21:39:10,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 181 transitions, 601 flow [2024-11-22 21:39:10,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 181 transitions, 587 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 21:39:10,967 INFO L231 Difference]: Finished difference. Result has 162 places, 159 transitions, 351 flow [2024-11-22 21:39:10,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=162, PETRI_TRANSITIONS=159} [2024-11-22 21:39:10,969 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 6 predicate places. [2024-11-22 21:39:10,969 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 159 transitions, 351 flow [2024-11-22 21:39:10,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:10,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:10,969 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-22 21:39:10,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:39:10,969 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-22 21:39:10,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:10,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1861751085, now seen corresponding path program 1 times [2024-11-22 21:39:10,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:10,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870439305] [2024-11-22 21:39:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:11,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:11,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870439305] [2024-11-22 21:39:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870439305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:39:11,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778093602] [2024-11-22 21:39:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:11,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:39:11,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:39:11,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:39:11,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:39:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:11,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:39:11,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:39:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:11,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:39:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:11,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778093602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:39:11,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:39:11,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-22 21:39:11,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532044333] [2024-11-22 21:39:11,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:39:11,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:39:11,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:39:11,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:39:11,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196 [2024-11-22 21:39:11,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 159 transitions, 351 flow. Second operand has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:11,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:11,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196 [2024-11-22 21:39:11,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:11,617 INFO L124 PetriNetUnfolderBase]: 1016/3442 cut-off events. [2024-11-22 21:39:11,618 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-22 21:39:11,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 3442 events. 1016/3442 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 30435 event pairs, 861 based on Foata normal form. 6/2954 useless extension candidates. Maximal degree in co-relation 5386. Up to 1919 conditions per place. [2024-11-22 21:39:11,696 INFO L140 encePairwiseOnDemand]: 193/196 looper letters, 69 selfloop transitions, 11 changer transitions 0/165 dead transitions. [2024-11-22 21:39:11,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 165 transitions, 547 flow [2024-11-22 21:39:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:39:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:39:11,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1130 transitions. [2024-11-22 21:39:11,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4804421768707483 [2024-11-22 21:39:11,699 INFO L175 Difference]: Start difference. First operand has 162 places, 159 transitions, 351 flow. Second operand 12 states and 1130 transitions. [2024-11-22 21:39:11,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 165 transitions, 547 flow [2024-11-22 21:39:11,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 165 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:39:11,704 INFO L231 Difference]: Finished difference. Result has 177 places, 165 transitions, 431 flow [2024-11-22 21:39:11,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=431, PETRI_PLACES=177, PETRI_TRANSITIONS=165} [2024-11-22 21:39:11,705 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 21 predicate places. [2024-11-22 21:39:11,705 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 165 transitions, 431 flow [2024-11-22 21:39:11,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:11,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:11,706 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-11-22 21:39:11,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:39:11,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 21:39:11,907 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-22 21:39:11,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash 510619347, now seen corresponding path program 2 times [2024-11-22 21:39:11,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452001701] [2024-11-22 21:39:11,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:39:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:11,924 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:39:11,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:39:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:39:11,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452001701] [2024-11-22 21:39:11,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452001701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:39:11,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:39:11,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:39:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351033488] [2024-11-22 21:39:11,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:39:11,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:39:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:39:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:39:12,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 196 [2024-11-22 21:39:12,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 165 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:12,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:12,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 196 [2024-11-22 21:39:12,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:12,324 INFO L124 PetriNetUnfolderBase]: 993/3218 cut-off events. [2024-11-22 21:39:12,324 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-22 21:39:12,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5194 conditions, 3218 events. 993/3218 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 28737 event pairs, 0 based on Foata normal form. 1/2790 useless extension candidates. Maximal degree in co-relation 5118. Up to 1887 conditions per place. [2024-11-22 21:39:12,337 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 102 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2024-11-22 21:39:12,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 188 transitions, 685 flow [2024-11-22 21:39:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:39:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:39:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2024-11-22 21:39:12,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-22 21:39:12,338 INFO L175 Difference]: Start difference. First operand has 177 places, 165 transitions, 431 flow. Second operand 3 states and 354 transitions. [2024-11-22 21:39:12,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 188 transitions, 685 flow [2024-11-22 21:39:12,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 188 transitions, 637 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-22 21:39:12,342 INFO L231 Difference]: Finished difference. Result has 175 places, 165 transitions, 393 flow [2024-11-22 21:39:12,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=175, PETRI_TRANSITIONS=165} [2024-11-22 21:39:12,343 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 19 predicate places. [2024-11-22 21:39:12,343 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 165 transitions, 393 flow [2024-11-22 21:39:12,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:12,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:12,343 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 21:39:12,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:39:12,344 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-22 21:39:12,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1787046587, now seen corresponding path program 1 times [2024-11-22 21:39:12,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:12,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646157216] [2024-11-22 21:39:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:12,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:39:12,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:12,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646157216] [2024-11-22 21:39:12,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646157216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:39:12,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789906612] [2024-11-22 21:39:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:12,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:39:12,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:39:12,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:39:12,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:39:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:12,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 21:39:12,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:39:12,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 21:39:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:39:12,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:39:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:39:12,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789906612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:39:12,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:39:12,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 21:39:12,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424923448] [2024-11-22 21:39:12,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:39:12,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:39:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:12,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:39:12,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:39:12,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 196 [2024-11-22 21:39:12,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 165 transitions, 393 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:12,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:12,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 196 [2024-11-22 21:39:12,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:12,903 INFO L124 PetriNetUnfolderBase]: 72/276 cut-off events. [2024-11-22 21:39:12,903 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-22 21:39:12,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 276 events. 72/276 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1123 event pairs, 34 based on Foata normal form. 44/292 useless extension candidates. Maximal degree in co-relation 479. Up to 132 conditions per place. [2024-11-22 21:39:12,907 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 61 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-11-22 21:39:12,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 362 flow [2024-11-22 21:39:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:39:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:39:12,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2024-11-22 21:39:12,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5038265306122449 [2024-11-22 21:39:12,910 INFO L175 Difference]: Start difference. First operand has 175 places, 165 transitions, 393 flow. Second operand 4 states and 395 transitions. [2024-11-22 21:39:12,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 362 flow [2024-11-22 21:39:12,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 356 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:39:12,912 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 186 flow [2024-11-22 21:39:12,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-11-22 21:39:12,914 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, -76 predicate places. [2024-11-22 21:39:12,914 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 186 flow [2024-11-22 21:39:12,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:12,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:12,915 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 21:39:12,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:39:13,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:39:13,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-22 21:39:13,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash -436129632, now seen corresponding path program 1 times [2024-11-22 21:39:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:13,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637648237] [2024-11-22 21:39:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:13,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:39:13,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 21:39:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 21:39:13,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 21:39:13,182 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 21:39:13,183 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2024-11-22 21:39:13,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2024-11-22 21:39:13,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-11-22 21:39:13,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-11-22 21:39:13,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-11-22 21:39:13,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (44 of 50 remaining) [2024-11-22 21:39:13,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-11-22 21:39:13,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2024-11-22 21:39:13,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-11-22 21:39:13,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-11-22 21:39:13,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-11-22 21:39:13,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-11-22 21:39:13,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-11-22 21:39:13,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-11-22 21:39:13,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-11-22 21:39:13,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-11-22 21:39:13,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2024-11-22 21:39:13,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-11-22 21:39:13,186 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2024-11-22 21:39:13,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-11-22 21:39:13,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (29 of 50 remaining) [2024-11-22 21:39:13,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-11-22 21:39:13,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-11-22 21:39:13,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-11-22 21:39:13,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2024-11-22 21:39:13,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2024-11-22 21:39:13,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2024-11-22 21:39:13,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2024-11-22 21:39:13,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-11-22 21:39:13,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-11-22 21:39:13,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-11-22 21:39:13,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-11-22 21:39:13,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-11-22 21:39:13,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-11-22 21:39:13,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-11-22 21:39:13,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-11-22 21:39:13,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-11-22 21:39:13,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-11-22 21:39:13,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2024-11-22 21:39:13,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-11-22 21:39:13,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-11-22 21:39:13,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-11-22 21:39:13,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-11-22 21:39:13,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-11-22 21:39:13,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-11-22 21:39:13,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-11-22 21:39:13,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-11-22 21:39:13,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-11-22 21:39:13,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-11-22 21:39:13,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2024-11-22 21:39:13,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:39:13,191 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-22 21:39:13,193 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 21:39:13,193 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 21:39:13,223 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:39:13,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 259 transitions, 534 flow [2024-11-22 21:39:13,255 INFO L124 PetriNetUnfolderBase]: 113/525 cut-off events. [2024-11-22 21:39:13,255 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 21:39:13,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 525 events. 113/525 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3427 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2024-11-22 21:39:13,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 259 transitions, 534 flow [2024-11-22 21:39:13,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 259 transitions, 534 flow [2024-11-22 21:39:13,265 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:39:13,265 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;@9675392, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:39:13,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-22 21:39:13,267 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:39:13,267 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-22 21:39:13,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:39:13,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:13,267 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-22 21:39:13,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-22 21:39:13,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 35428242, now seen corresponding path program 1 times [2024-11-22 21:39:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427731970] [2024-11-22 21:39:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:13,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:13,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427731970] [2024-11-22 21:39:13,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427731970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:39:13,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:39:13,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:39:13,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784046135] [2024-11-22 21:39:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:39:13,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:39:13,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:13,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:39:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:39:13,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 259 [2024-11-22 21:39:13,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 259 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:13,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:13,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 259 [2024-11-22 21:39:13,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:19,188 INFO L124 PetriNetUnfolderBase]: 44674/99599 cut-off events. [2024-11-22 21:39:19,189 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-22 21:39:19,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164300 conditions, 99599 events. 44674/99599 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 2867. Compared 1207882 event pairs, 39313 based on Foata normal form. 23707/109828 useless extension candidates. Maximal degree in co-relation 151614. Up to 64558 conditions per place. [2024-11-22 21:39:19,946 INFO L140 encePairwiseOnDemand]: 208/259 looper letters, 93 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2024-11-22 21:39:19,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 208 transitions, 622 flow [2024-11-22 21:39:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:39:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:39:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2024-11-22 21:39:19,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-11-22 21:39:19,951 INFO L175 Difference]: Start difference. First operand has 206 places, 259 transitions, 534 flow. Second operand 3 states and 483 transitions. [2024-11-22 21:39:19,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 208 transitions, 622 flow [2024-11-22 21:39:19,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 208 transitions, 622 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:39:19,955 INFO L231 Difference]: Finished difference. Result has 205 places, 208 transitions, 442 flow [2024-11-22 21:39:19,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=205, PETRI_TRANSITIONS=208} [2024-11-22 21:39:19,957 INFO L277 CegarLoopForPetriNet]: 206 programPoint places, -1 predicate places. [2024-11-22 21:39:19,957 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 208 transitions, 442 flow [2024-11-22 21:39:19,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:19,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:19,957 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-22 21:39:19,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:39:19,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-22 21:39:19,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1098281749, now seen corresponding path program 1 times [2024-11-22 21:39:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:19,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202758807] [2024-11-22 21:39:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:19,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:19,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202758807] [2024-11-22 21:39:19,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202758807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:39:19,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127164534] [2024-11-22 21:39:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:19,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:39:19,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:39:20,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:39:20,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:39:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:20,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 21:39:20,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:39:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:20,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:39:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:20,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127164534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:39:20,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:39:20,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-22 21:39:20,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476461311] [2024-11-22 21:39:20,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:39:20,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:39:20,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:39:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:39:20,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 259 [2024-11-22 21:39:20,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 208 transitions, 442 flow. Second operand has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:20,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:20,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 259 [2024-11-22 21:39:20,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:26,093 INFO L124 PetriNetUnfolderBase]: 44674/99602 cut-off events. [2024-11-22 21:39:26,093 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-22 21:39:26,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164316 conditions, 99602 events. 44674/99602 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 2867. Compared 1207887 event pairs, 39313 based on Foata normal form. 0/86124 useless extension candidates. Maximal degree in co-relation 164303. Up to 64558 conditions per place. [2024-11-22 21:39:26,666 INFO L140 encePairwiseOnDemand]: 256/259 looper letters, 93 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2024-11-22 21:39:26,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 211 transitions, 650 flow [2024-11-22 21:39:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:39:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:39:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 779 transitions. [2024-11-22 21:39:26,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5012870012870013 [2024-11-22 21:39:26,669 INFO L175 Difference]: Start difference. First operand has 205 places, 208 transitions, 442 flow. Second operand 6 states and 779 transitions. [2024-11-22 21:39:26,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 211 transitions, 650 flow [2024-11-22 21:39:26,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 211 transitions, 646 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 21:39:26,673 INFO L231 Difference]: Finished difference. Result has 212 places, 211 transitions, 474 flow [2024-11-22 21:39:26,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=474, PETRI_PLACES=212, PETRI_TRANSITIONS=211} [2024-11-22 21:39:26,674 INFO L277 CegarLoopForPetriNet]: 206 programPoint places, 6 predicate places. [2024-11-22 21:39:26,674 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 211 transitions, 474 flow [2024-11-22 21:39:26,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:26,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:26,674 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-22 21:39:26,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 21:39:26,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:39:26,875 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-22 21:39:26,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:26,876 INFO L85 PathProgramCache]: Analyzing trace with hash -143073198, now seen corresponding path program 2 times [2024-11-22 21:39:26,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:26,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000146645] [2024-11-22 21:39:26,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:39:26,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:26,888 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:39:26,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:39:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 21:39:26,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:26,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000146645] [2024-11-22 21:39:26,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000146645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:39:26,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:39:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:39:26,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347627203] [2024-11-22 21:39:26,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:39:26,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:39:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:26,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:39:26,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:39:26,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 259 [2024-11-22 21:39:26,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 211 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:26,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:26,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 259 [2024-11-22 21:39:26,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:33,758 INFO L124 PetriNetUnfolderBase]: 47090/103142 cut-off events. [2024-11-22 21:39:33,759 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-22 21:39:34,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171284 conditions, 103142 events. 47090/103142 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 3014. Compared 1242082 event pairs, 39292 based on Foata normal form. 0/89868 useless extension candidates. Maximal degree in co-relation 171249. Up to 64472 conditions per place. [2024-11-22 21:39:34,497 INFO L140 encePairwiseOnDemand]: 255/259 looper letters, 142 selfloop transitions, 2 changer transitions 0/253 dead transitions. [2024-11-22 21:39:34,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 253 transitions, 846 flow [2024-11-22 21:39:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:39:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:39:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2024-11-22 21:39:34,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-11-22 21:39:34,499 INFO L175 Difference]: Start difference. First operand has 212 places, 211 transitions, 474 flow. Second operand 3 states and 469 transitions. [2024-11-22 21:39:34,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 253 transitions, 846 flow [2024-11-22 21:39:34,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 253 transitions, 832 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 21:39:34,503 INFO L231 Difference]: Finished difference. Result has 211 places, 209 transitions, 460 flow [2024-11-22 21:39:34,503 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=211, PETRI_TRANSITIONS=209} [2024-11-22 21:39:34,504 INFO L277 CegarLoopForPetriNet]: 206 programPoint places, 5 predicate places. [2024-11-22 21:39:34,504 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 209 transitions, 460 flow [2024-11-22 21:39:34,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:34,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:34,504 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-22 21:39:34,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:39:34,505 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-22 21:39:34,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:34,505 INFO L85 PathProgramCache]: Analyzing trace with hash -143073197, now seen corresponding path program 1 times [2024-11-22 21:39:34,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:34,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628542421] [2024-11-22 21:39:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:34,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628542421] [2024-11-22 21:39:34,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628542421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:39:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022686968] [2024-11-22 21:39:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:39:34,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:39:34,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:39:34,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:39:34,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:39:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:39:34,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:39:34,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:39:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:34,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:39:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:39:34,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022686968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:39:34,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:39:34,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-22 21:39:34,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420715548] [2024-11-22 21:39:34,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:39:34,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:39:34,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:39:34,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:39:34,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 259 [2024-11-22 21:39:34,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 209 transitions, 460 flow. Second operand has 13 states, 13 states have (on average 114.15384615384616) internal successors, (1484), 13 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:34,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:34,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 259 [2024-11-22 21:39:34,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:39:41,161 INFO L124 PetriNetUnfolderBase]: 44674/99280 cut-off events. [2024-11-22 21:39:41,162 INFO L125 PetriNetUnfolderBase]: For 1253/1253 co-relation queries the response was YES. [2024-11-22 21:39:41,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164966 conditions, 99280 events. 44674/99280 cut-off events. For 1253/1253 co-relation queries the response was YES. Maximal size of possible extension queue 2860. Compared 1200498 event pairs, 39313 based on Foata normal form. 6/86137 useless extension candidates. Maximal degree in co-relation 164913. Up to 64558 conditions per place. [2024-11-22 21:39:41,887 INFO L140 encePairwiseOnDemand]: 256/259 looper letters, 93 selfloop transitions, 11 changer transitions 0/215 dead transitions. [2024-11-22 21:39:41,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 215 transitions, 704 flow [2024-11-22 21:39:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:39:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:39:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1466 transitions. [2024-11-22 21:39:41,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4716859716859717 [2024-11-22 21:39:41,892 INFO L175 Difference]: Start difference. First operand has 211 places, 209 transitions, 460 flow. Second operand 12 states and 1466 transitions. [2024-11-22 21:39:41,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 215 transitions, 704 flow [2024-11-22 21:39:41,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 215 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:39:41,950 INFO L231 Difference]: Finished difference. Result has 226 places, 215 transitions, 540 flow [2024-11-22 21:39:41,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=540, PETRI_PLACES=226, PETRI_TRANSITIONS=215} [2024-11-22 21:39:41,951 INFO L277 CegarLoopForPetriNet]: 206 programPoint places, 20 predicate places. [2024-11-22 21:39:41,951 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 215 transitions, 540 flow [2024-11-22 21:39:41,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.15384615384616) internal successors, (1484), 13 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:41,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:39:41,952 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-11-22 21:39:41,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:39:42,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 21:39:42,152 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-22 21:39:42,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:39:42,153 INFO L85 PathProgramCache]: Analyzing trace with hash -361244301, now seen corresponding path program 2 times [2024-11-22 21:39:42,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:39:42,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740259333] [2024-11-22 21:39:42,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:39:42,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:39:42,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:39:42,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:39:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 21:39:42,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:39:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740259333] [2024-11-22 21:39:42,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740259333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:39:42,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:39:42,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:39:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516671554] [2024-11-22 21:39:42,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:39:42,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:39:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:39:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:39:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:39:42,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 259 [2024-11-22 21:39:42,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 215 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:39:42,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:39:42,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 259 [2024-11-22 21:39:42,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand