./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_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 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:11:06,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:11:06,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:11:06,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:11:06,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:11:06,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:11:06,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:11:06,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:11:06,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:11:06,677 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:11:06,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:11:06,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:11:06,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:11:06,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:11:06,682 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:11:06,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:11:06,683 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:11:06,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:11:06,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:11:06,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:11:06,683 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:11:06,684 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:11:06,684 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:11:06,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:11:06,684 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:11:06,685 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:11:06,685 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:11:06,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:11:06,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:11:06,685 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:11:06,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:11:06,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:11:06,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:11:06,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:11:06,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:11:06,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:11:06,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:11:06,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:11:06,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:11:06,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:11:06,688 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:11:06,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:11:06,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2024-11-10 18:11:06,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:11:06,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:11:06,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:11:06,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:11:06,922 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:11:06,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-11-10 18:11:08,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:11:08,524 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:11:08,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-11-10 18:11:08,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12171698d/a45d0243baab4154a46dfceb2d345fef/FLAGa371b6890 [2024-11-10 18:11:08,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12171698d/a45d0243baab4154a46dfceb2d345fef [2024-11-10 18:11:08,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:11:08,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:11:08,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:11:08,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:11:08,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:11:08,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:08" (1/1) ... [2024-11-10 18:11:08,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71514e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:08, skipping insertion in model container [2024-11-10 18:11:08,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:11:08" (1/1) ... [2024-11-10 18:11:08,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:11:09,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:11:09,379 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:11:09,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:11:09,482 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:11:09,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09 WrapperNode [2024-11-10 18:11:09,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:11:09,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:11:09,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:11:09,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:11:09,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,533 INFO L138 Inliner]: procedures = 378, calls = 83, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 257 [2024-11-10 18:11:09,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:11:09,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:11:09,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:11:09,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:11:09,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,549 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,571 INFO L175 MemorySlicer]: Split 47 memory accesses to 7 slices as follows [2, 5, 8, 2, 5, 5, 20]. 43 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 5, 1, 0, 5, 5, 0]. The 16 writes are split as follows [0, 0, 3, 1, 0, 0, 12]. [2024-11-10 18:11:09,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,601 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:11:09,619 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:11:09,619 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:11:09,619 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:11:09,620 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (1/1) ... [2024-11-10 18:11:09,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:11:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:11:09,668 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) [2024-11-10 18:11:09,672 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 [2024-11-10 18:11:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:11:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 18:11:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 18:11:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 18:11:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-10 18:11:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-10 18:11:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-10 18:11:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-10 18:11:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:11:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 18:11:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 18:11:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 18:11:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-10 18:11:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-10 18:11:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-10 18:11:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-10 18:11:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:11:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:11:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:11:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:11:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-10 18:11:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-10 18:11:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:11:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:11:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:11:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 18:11:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 18:11:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 18:11:09,717 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-10 18:11:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:11:09,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:11:09,719 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:11:09,907 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:11:09,908 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:11:10,310 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1270: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 18:11:10,310 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1270-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 18:11:10,311 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:11:10,312 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:11:10,535 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:11:10,535 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:11:10,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:11:10 BoogieIcfgContainer [2024-11-10 18:11:10,536 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:11:10,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:11:10,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:11:10,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:11:10,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:11:08" (1/3) ... [2024-11-10 18:11:10,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3861ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:10, skipping insertion in model container [2024-11-10 18:11:10,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:11:09" (2/3) ... [2024-11-10 18:11:10,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3861ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:11:10, skipping insertion in model container [2024-11-10 18:11:10,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:11:10" (3/3) ... [2024-11-10 18:11:10,545 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2024-11-10 18:11:10,560 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:11:10,561 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2024-11-10 18:11:10,561 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:11:10,630 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 18:11:10,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 210 transitions, 427 flow [2024-11-10 18:11:10,752 INFO L124 PetriNetUnfolderBase]: 48/321 cut-off events. [2024-11-10 18:11:10,752 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:11:10,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 321 events. 48/321 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1492 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2024-11-10 18:11:10,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 210 transitions, 427 flow [2024-11-10 18:11:10,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 210 transitions, 427 flow [2024-11-10 18:11:10,776 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:11:10,782 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;@41adafc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:11:10,782 INFO L334 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2024-11-10 18:11:10,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:11:10,786 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-10 18:11:10,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:11:10,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:10,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:11:10,788 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:10,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 24810, now seen corresponding path program 1 times [2024-11-10 18:11:10,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:10,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200859057] [2024-11-10 18:11:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:10,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:11,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:11,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200859057] [2024-11-10 18:11:11,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200859057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:11,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:11,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:11:11,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707830188] [2024-11-10 18:11:11,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:11,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:11,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2024-11-10 18:11:11,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 210 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2024-11-10 18:11:11,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:11,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2024-11-10 18:11:11,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:11,827 INFO L124 PetriNetUnfolderBase]: 947/3464 cut-off events. [2024-11-10 18:11:11,828 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:11:11,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5322 conditions, 3464 events. 947/3464 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 28865 event pairs, 806 based on Foata normal form. 755/3718 useless extension candidates. Maximal degree in co-relation 5165. Up to 1744 conditions per place. [2024-11-10 18:11:11,852 INFO L140 encePairwiseOnDemand]: 178/210 looper letters, 91 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2024-11-10 18:11:11,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 204 transitions, 601 flow [2024-11-10 18:11:11,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2024-11-10 18:11:11,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2024-11-10 18:11:11,869 INFO L175 Difference]: Start difference. First operand has 182 places, 210 transitions, 427 flow. Second operand 3 states and 468 transitions. [2024-11-10 18:11:11,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 204 transitions, 601 flow [2024-11-10 18:11:11,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 204 transitions, 601 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:11:11,878 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 367 flow [2024-11-10 18:11:11,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2024-11-10 18:11:11,884 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -3 predicate places. [2024-11-10 18:11:11,884 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 367 flow [2024-11-10 18:11:11,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2024-11-10 18:11:11,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:11,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:11:11,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:11:11,886 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:11,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash 24811, now seen corresponding path program 1 times [2024-11-10 18:11:11,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:11,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882596853] [2024-11-10 18:11:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:11,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:11,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:11,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882596853] [2024-11-10 18:11:11,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882596853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:11,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:11,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:11:11,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830800705] [2024-11-10 18:11:11,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:11,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:11,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:11,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:11,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:12,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2024-11-10 18:11:12,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2024-11-10 18:11:12,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:12,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2024-11-10 18:11:12,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:12,430 INFO L124 PetriNetUnfolderBase]: 976/3559 cut-off events. [2024-11-10 18:11:12,430 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-10 18:11:12,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5501 conditions, 3559 events. 976/3559 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 29909 event pairs, 884 based on Foata normal form. 0/3020 useless extension candidates. Maximal degree in co-relation 5342. Up to 1904 conditions per place. [2024-11-10 18:11:12,450 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 66 selfloop transitions, 2 changer transitions 0/176 dead transitions. [2024-11-10 18:11:12,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 176 transitions, 499 flow [2024-11-10 18:11:12,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:12,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2024-11-10 18:11:12,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6396825396825396 [2024-11-10 18:11:12,453 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 367 flow. Second operand 3 states and 403 transitions. [2024-11-10 18:11:12,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 176 transitions, 499 flow [2024-11-10 18:11:12,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 176 transitions, 495 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:12,485 INFO L231 Difference]: Finished difference. Result has 177 places, 176 transitions, 363 flow [2024-11-10 18:11:12,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=177, PETRI_TRANSITIONS=176} [2024-11-10 18:11:12,486 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -5 predicate places. [2024-11-10 18:11:12,486 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 176 transitions, 363 flow [2024-11-10 18:11:12,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2024-11-10 18:11:12,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:12,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:12,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:11:12,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:12,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash 23862645, now seen corresponding path program 1 times [2024-11-10 18:11:12,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:12,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426390458] [2024-11-10 18:11:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:12,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:12,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:12,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426390458] [2024-11-10 18:11:12,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426390458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:12,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:12,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:12,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789285075] [2024-11-10 18:11:12,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:12,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:11:12,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:12,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:11:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:11:12,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 210 [2024-11-10 18:11:12,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 176 transitions, 363 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 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) [2024-11-10 18:11:12,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:12,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 210 [2024-11-10 18:11:12,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:13,273 INFO L124 PetriNetUnfolderBase]: 976/3496 cut-off events. [2024-11-10 18:11:13,273 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:11:13,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5412 conditions, 3496 events. 976/3496 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 28873 event pairs, 555 based on Foata normal form. 1/3051 useless extension candidates. Maximal degree in co-relation 5394. Up to 1718 conditions per place. [2024-11-10 18:11:13,291 INFO L140 encePairwiseOnDemand]: 198/210 looper letters, 99 selfloop transitions, 11 changer transitions 0/213 dead transitions. [2024-11-10 18:11:13,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 213 transitions, 657 flow [2024-11-10 18:11:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:11:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:11:13,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 764 transitions. [2024-11-10 18:11:13,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6063492063492063 [2024-11-10 18:11:13,293 INFO L175 Difference]: Start difference. First operand has 177 places, 176 transitions, 363 flow. Second operand 6 states and 764 transitions. [2024-11-10 18:11:13,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 213 transitions, 657 flow [2024-11-10 18:11:13,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 213 transitions, 653 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:13,299 INFO L231 Difference]: Finished difference. Result has 177 places, 177 transitions, 394 flow [2024-11-10 18:11:13,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=177, PETRI_TRANSITIONS=177} [2024-11-10 18:11:13,300 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -5 predicate places. [2024-11-10 18:11:13,300 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 177 transitions, 394 flow [2024-11-10 18:11:13,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 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) [2024-11-10 18:11:13,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:13,301 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:13,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:11:13,301 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:13,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:13,302 INFO L85 PathProgramCache]: Analyzing trace with hash 23862646, now seen corresponding path program 1 times [2024-11-10 18:11:13,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:13,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278475480] [2024-11-10 18:11:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:13,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278475480] [2024-11-10 18:11:13,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278475480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:13,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:13,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:13,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248779949] [2024-11-10 18:11:13,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:13,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:11:13,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:13,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:11:13,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:11:13,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2024-11-10 18:11:13,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 177 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2024-11-10 18:11:13,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:13,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2024-11-10 18:11:13,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:14,092 INFO L124 PetriNetUnfolderBase]: 949/3403 cut-off events. [2024-11-10 18:11:14,093 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-11-10 18:11:14,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 3403 events. 949/3403 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 28163 event pairs, 790 based on Foata normal form. 58/3020 useless extension candidates. Maximal degree in co-relation 5248. Up to 1796 conditions per place. [2024-11-10 18:11:14,112 INFO L140 encePairwiseOnDemand]: 200/210 looper letters, 89 selfloop transitions, 8 changer transitions 0/198 dead transitions. [2024-11-10 18:11:14,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 198 transitions, 630 flow [2024-11-10 18:11:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:11:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:11:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 757 transitions. [2024-11-10 18:11:14,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6007936507936508 [2024-11-10 18:11:14,114 INFO L175 Difference]: Start difference. First operand has 177 places, 177 transitions, 394 flow. Second operand 6 states and 757 transitions. [2024-11-10 18:11:14,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 198 transitions, 630 flow [2024-11-10 18:11:14,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 198 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:14,118 INFO L231 Difference]: Finished difference. Result has 177 places, 173 transitions, 400 flow [2024-11-10 18:11:14,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=177, PETRI_TRANSITIONS=173} [2024-11-10 18:11:14,120 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -5 predicate places. [2024-11-10 18:11:14,120 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 173 transitions, 400 flow [2024-11-10 18:11:14,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2024-11-10 18:11:14,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:14,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:14,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:11:14,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:14,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:14,123 INFO L85 PathProgramCache]: Analyzing trace with hash 195418749, now seen corresponding path program 1 times [2024-11-10 18:11:14,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:14,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935729515] [2024-11-10 18:11:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:14,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:14,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:14,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935729515] [2024-11-10 18:11:14,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935729515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:14,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:14,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:14,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568325213] [2024-11-10 18:11:14,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:14,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:14,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:14,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2024-11-10 18:11:14,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 173 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2024-11-10 18:11:14,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:14,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2024-11-10 18:11:14,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:14,547 INFO L124 PetriNetUnfolderBase]: 1001/3537 cut-off events. [2024-11-10 18:11:14,547 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-11-10 18:11:14,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5712 conditions, 3537 events. 1001/3537 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 29414 event pairs, 795 based on Foata normal form. 0/3104 useless extension candidates. Maximal degree in co-relation 5547. Up to 1849 conditions per place. [2024-11-10 18:11:14,564 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 98 selfloop transitions, 2 changer transitions 0/197 dead transitions. [2024-11-10 18:11:14,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 197 transitions, 650 flow [2024-11-10 18:11:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2024-11-10 18:11:14,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778 [2024-11-10 18:11:14,566 INFO L175 Difference]: Start difference. First operand has 177 places, 173 transitions, 400 flow. Second operand 3 states and 427 transitions. [2024-11-10 18:11:14,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 197 transitions, 650 flow [2024-11-10 18:11:14,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 197 transitions, 634 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 18:11:14,569 INFO L231 Difference]: Finished difference. Result has 172 places, 171 transitions, 384 flow [2024-11-10 18:11:14,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2024-11-10 18:11:14,570 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -10 predicate places. [2024-11-10 18:11:14,571 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 384 flow [2024-11-10 18:11:14,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2024-11-10 18:11:14,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:14,571 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:14,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:11:14,572 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:14,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:14,572 INFO L85 PathProgramCache]: Analyzing trace with hash 195418750, now seen corresponding path program 1 times [2024-11-10 18:11:14,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:14,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048958035] [2024-11-10 18:11:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:14,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:14,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048958035] [2024-11-10 18:11:14,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048958035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:14,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:14,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:14,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977596048] [2024-11-10 18:11:14,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:14,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:14,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:14,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:14,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:14,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 210 [2024-11-10 18:11:14,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 384 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) [2024-11-10 18:11:14,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:14,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 210 [2024-11-10 18:11:14,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:15,002 INFO L124 PetriNetUnfolderBase]: 1000/3545 cut-off events. [2024-11-10 18:11:15,002 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2024-11-10 18:11:15,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5654 conditions, 3545 events. 1000/3545 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 29288 event pairs, 807 based on Foata normal form. 1/3043 useless extension candidates. Maximal degree in co-relation 5607. Up to 1927 conditions per place. [2024-11-10 18:11:15,022 INFO L140 encePairwiseOnDemand]: 205/210 looper letters, 74 selfloop transitions, 3 changer transitions 0/174 dead transitions. [2024-11-10 18:11:15,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 174 transitions, 544 flow [2024-11-10 18:11:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2024-11-10 18:11:15,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2024-11-10 18:11:15,024 INFO L175 Difference]: Start difference. First operand has 172 places, 171 transitions, 384 flow. Second operand 3 states and 410 transitions. [2024-11-10 18:11:15,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 174 transitions, 544 flow [2024-11-10 18:11:15,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 174 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:15,028 INFO L231 Difference]: Finished difference. Result has 173 places, 173 transitions, 401 flow [2024-11-10 18:11:15,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=173, PETRI_TRANSITIONS=173} [2024-11-10 18:11:15,029 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -9 predicate places. [2024-11-10 18:11:15,029 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 173 transitions, 401 flow [2024-11-10 18:11:15,030 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) [2024-11-10 18:11:15,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:15,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:15,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:11:15,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:15,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2040072051, now seen corresponding path program 1 times [2024-11-10 18:11:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181490461] [2024-11-10 18:11:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:15,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:15,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181490461] [2024-11-10 18:11:15,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181490461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:15,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:15,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:15,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137347126] [2024-11-10 18:11:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:15,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:15,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:15,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:15,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2024-11-10 18:11:15,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 173 transitions, 401 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) [2024-11-10 18:11:15,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:15,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2024-11-10 18:11:15,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:15,545 INFO L124 PetriNetUnfolderBase]: 987/3505 cut-off events. [2024-11-10 18:11:15,545 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2024-11-10 18:11:15,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5635 conditions, 3505 events. 987/3505 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 28885 event pairs, 733 based on Foata normal form. 0/3030 useless extension candidates. Maximal degree in co-relation 5589. Up to 1768 conditions per place. [2024-11-10 18:11:15,560 INFO L140 encePairwiseOnDemand]: 204/210 looper letters, 108 selfloop transitions, 5 changer transitions 0/209 dead transitions. [2024-11-10 18:11:15,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 209 transitions, 710 flow [2024-11-10 18:11:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2024-11-10 18:11:15,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-10 18:11:15,562 INFO L175 Difference]: Start difference. First operand has 173 places, 173 transitions, 401 flow. Second operand 3 states and 441 transitions. [2024-11-10 18:11:15,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 209 transitions, 710 flow [2024-11-10 18:11:15,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 209 transitions, 707 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:11:15,565 INFO L231 Difference]: Finished difference. Result has 176 places, 176 transitions, 434 flow [2024-11-10 18:11:15,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=176, PETRI_TRANSITIONS=176} [2024-11-10 18:11:15,566 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -6 predicate places. [2024-11-10 18:11:15,566 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 176 transitions, 434 flow [2024-11-10 18:11:15,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-10 18:11:15,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:15,567 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:15,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:11:15,567 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:15,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2040072052, now seen corresponding path program 1 times [2024-11-10 18:11:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:15,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768248047] [2024-11-10 18:11:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:15,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:15,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:15,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768248047] [2024-11-10 18:11:15,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768248047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:15,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:15,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:11:15,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027435753] [2024-11-10 18:11:15,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:15,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:15,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:15,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:15,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 210 [2024-11-10 18:11:15,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 176 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2024-11-10 18:11:15,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:15,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 210 [2024-11-10 18:11:15,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:16,085 INFO L124 PetriNetUnfolderBase]: 951/3378 cut-off events. [2024-11-10 18:11:16,085 INFO L125 PetriNetUnfolderBase]: For 478/508 co-relation queries the response was YES. [2024-11-10 18:11:16,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5610 conditions, 3378 events. 951/3378 cut-off events. For 478/508 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 27874 event pairs, 701 based on Foata normal form. 72/2995 useless extension candidates. Maximal degree in co-relation 5562. Up to 1759 conditions per place. [2024-11-10 18:11:16,096 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 105 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2024-11-10 18:11:16,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 207 transitions, 725 flow [2024-11-10 18:11:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:16,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2024-11-10 18:11:16,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6968253968253968 [2024-11-10 18:11:16,098 INFO L175 Difference]: Start difference. First operand has 176 places, 176 transitions, 434 flow. Second operand 3 states and 439 transitions. [2024-11-10 18:11:16,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 207 transitions, 725 flow [2024-11-10 18:11:16,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 207 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:16,102 INFO L231 Difference]: Finished difference. Result has 174 places, 174 transitions, 428 flow [2024-11-10 18:11:16,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=174, PETRI_TRANSITIONS=174} [2024-11-10 18:11:16,105 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -8 predicate places. [2024-11-10 18:11:16,106 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 174 transitions, 428 flow [2024-11-10 18:11:16,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2024-11-10 18:11:16,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:16,106 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:16,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:11:16,106 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:16,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1999738355, now seen corresponding path program 1 times [2024-11-10 18:11:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711766172] [2024-11-10 18:11:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:16,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:16,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:16,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711766172] [2024-11-10 18:11:16,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711766172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:11:16,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72366853] [2024-11-10 18:11:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:16,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:11:16,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:11:16,232 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) [2024-11-10 18:11:16,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:11:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:16,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:11:16,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:11:16,398 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 [2024-11-10 18:11:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:16,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:11:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:16,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72366853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:11:16,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:11:16,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 18:11:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201023779] [2024-11-10 18:11:16,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:11:16,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:11:16,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:16,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:11:16,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:11:16,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2024-11-10 18:11:16,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 174 transitions, 428 flow. Second operand has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 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) [2024-11-10 18:11:16,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:16,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2024-11-10 18:11:16,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:17,159 INFO L124 PetriNetUnfolderBase]: 968/3402 cut-off events. [2024-11-10 18:11:17,159 INFO L125 PetriNetUnfolderBase]: For 337/369 co-relation queries the response was YES. [2024-11-10 18:11:17,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5597 conditions, 3402 events. 968/3402 cut-off events. For 337/369 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 28007 event pairs, 613 based on Foata normal form. 29/2994 useless extension candidates. Maximal degree in co-relation 5549. Up to 1631 conditions per place. [2024-11-10 18:11:17,173 INFO L140 encePairwiseOnDemand]: 204/210 looper letters, 125 selfloop transitions, 7 changer transitions 0/227 dead transitions. [2024-11-10 18:11:17,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 227 transitions, 810 flow [2024-11-10 18:11:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:11:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:11:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 794 transitions. [2024-11-10 18:11:17,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6301587301587301 [2024-11-10 18:11:17,176 INFO L175 Difference]: Start difference. First operand has 174 places, 174 transitions, 428 flow. Second operand 6 states and 794 transitions. [2024-11-10 18:11:17,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 227 transitions, 810 flow [2024-11-10 18:11:17,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 227 transitions, 798 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:17,179 INFO L231 Difference]: Finished difference. Result has 177 places, 173 transitions, 434 flow [2024-11-10 18:11:17,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=434, PETRI_PLACES=177, PETRI_TRANSITIONS=173} [2024-11-10 18:11:17,181 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -5 predicate places. [2024-11-10 18:11:17,181 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 173 transitions, 434 flow [2024-11-10 18:11:17,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.85714285714286) internal successors, (797), 7 states have internal predecessors, (797), 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) [2024-11-10 18:11:17,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:17,182 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:17,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:11:17,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:11:17,387 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2024-11-10 18:11:17,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1862347643, now seen corresponding path program 1 times [2024-11-10 18:11:17,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:17,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464654273] [2024-11-10 18:11:17,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:17,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:11:17,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:11:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:11:17,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:11:17,468 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:11:17,469 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (82 of 83 remaining) [2024-11-10 18:11:17,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 83 remaining) [2024-11-10 18:11:17,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 83 remaining) [2024-11-10 18:11:17,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 83 remaining) [2024-11-10 18:11:17,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 83 remaining) [2024-11-10 18:11:17,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 83 remaining) [2024-11-10 18:11:17,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 83 remaining) [2024-11-10 18:11:17,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 83 remaining) [2024-11-10 18:11:17,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 83 remaining) [2024-11-10 18:11:17,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 83 remaining) [2024-11-10 18:11:17,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 83 remaining) [2024-11-10 18:11:17,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 83 remaining) [2024-11-10 18:11:17,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 83 remaining) [2024-11-10 18:11:17,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 83 remaining) [2024-11-10 18:11:17,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 83 remaining) [2024-11-10 18:11:17,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 83 remaining) [2024-11-10 18:11:17,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 83 remaining) [2024-11-10 18:11:17,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 83 remaining) [2024-11-10 18:11:17,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 83 remaining) [2024-11-10 18:11:17,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 83 remaining) [2024-11-10 18:11:17,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 83 remaining) [2024-11-10 18:11:17,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 83 remaining) [2024-11-10 18:11:17,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 83 remaining) [2024-11-10 18:11:17,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 83 remaining) [2024-11-10 18:11:17,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 83 remaining) [2024-11-10 18:11:17,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 83 remaining) [2024-11-10 18:11:17,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 83 remaining) [2024-11-10 18:11:17,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 83 remaining) [2024-11-10 18:11:17,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 83 remaining) [2024-11-10 18:11:17,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (53 of 83 remaining) [2024-11-10 18:11:17,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 83 remaining) [2024-11-10 18:11:17,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 83 remaining) [2024-11-10 18:11:17,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (42 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 83 remaining) [2024-11-10 18:11:17,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 83 remaining) [2024-11-10 18:11:17,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 83 remaining) [2024-11-10 18:11:17,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 83 remaining) [2024-11-10 18:11:17,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 83 remaining) [2024-11-10 18:11:17,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 83 remaining) [2024-11-10 18:11:17,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 83 remaining) [2024-11-10 18:11:17,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 83 remaining) [2024-11-10 18:11:17,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (21 of 83 remaining) [2024-11-10 18:11:17,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 83 remaining) [2024-11-10 18:11:17,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 83 remaining) [2024-11-10 18:11:17,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 83 remaining) [2024-11-10 18:11:17,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 83 remaining) [2024-11-10 18:11:17,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 83 remaining) [2024-11-10 18:11:17,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 83 remaining) [2024-11-10 18:11:17,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 83 remaining) [2024-11-10 18:11:17,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 83 remaining) [2024-11-10 18:11:17,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 18:11:17,482 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:11:17,485 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:11:17,485 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:11:17,536 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:11:17,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 293 transitions, 602 flow [2024-11-10 18:11:17,578 INFO L124 PetriNetUnfolderBase]: 81/530 cut-off events. [2024-11-10 18:11:17,578 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:11:17,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 530 events. 81/530 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2938 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 323. Up to 12 conditions per place. [2024-11-10 18:11:17,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 293 transitions, 602 flow [2024-11-10 18:11:17,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 293 transitions, 602 flow [2024-11-10 18:11:17,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:11:17,594 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;@41adafc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:11:17,594 INFO L334 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2024-11-10 18:11:17,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:11:17,595 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-10 18:11:17,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:11:17,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:17,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:11:17,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-10 18:11:17,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash 34186, now seen corresponding path program 1 times [2024-11-10 18:11:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405754532] [2024-11-10 18:11:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:17,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:17,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405754532] [2024-11-10 18:11:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405754532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:17,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:17,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:11:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560507671] [2024-11-10 18:11:17,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:17,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:17,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 293 [2024-11-10 18:11:17,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 293 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2024-11-10 18:11:17,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:17,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 293 [2024-11-10 18:11:17,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:27,415 INFO L124 PetriNetUnfolderBase]: 51356/118458 cut-off events. [2024-11-10 18:11:27,416 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-10 18:11:27,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194230 conditions, 118458 events. 51356/118458 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 2358. Compared 1436339 event pairs, 45110 based on Foata normal form. 30952/135812 useless extension candidates. Maximal degree in co-relation 174570. Up to 71121 conditions per place. [2024-11-10 18:11:28,148 INFO L140 encePairwiseOnDemand]: 249/293 looper letters, 145 selfloop transitions, 2 changer transitions 0/300 dead transitions. [2024-11-10 18:11:28,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 300 transitions, 910 flow [2024-11-10 18:11:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2024-11-10 18:11:28,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.764505119453925 [2024-11-10 18:11:28,152 INFO L175 Difference]: Start difference. First operand has 253 places, 293 transitions, 602 flow. Second operand 3 states and 672 transitions. [2024-11-10 18:11:28,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 300 transitions, 910 flow [2024-11-10 18:11:28,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 300 transitions, 910 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:11:28,157 INFO L231 Difference]: Finished difference. Result has 249 places, 248 transitions, 516 flow [2024-11-10 18:11:28,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=516, PETRI_PLACES=249, PETRI_TRANSITIONS=248} [2024-11-10 18:11:28,158 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -4 predicate places. [2024-11-10 18:11:28,158 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 248 transitions, 516 flow [2024-11-10 18:11:28,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2024-11-10 18:11:28,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:28,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:11:28,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 18:11:28,160 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-10 18:11:28,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:28,161 INFO L85 PathProgramCache]: Analyzing trace with hash 34187, now seen corresponding path program 1 times [2024-11-10 18:11:28,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:28,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450044366] [2024-11-10 18:11:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:28,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:28,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:28,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450044366] [2024-11-10 18:11:28,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450044366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:28,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:28,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:11:28,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157623961] [2024-11-10 18:11:28,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:28,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:11:28,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:28,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:11:28,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:11:28,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 293 [2024-11-10 18:11:28,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 248 transitions, 516 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2024-11-10 18:11:28,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:28,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 293 [2024-11-10 18:11:28,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:37,789 INFO L124 PetriNetUnfolderBase]: 52925/122802 cut-off events. [2024-11-10 18:11:37,790 INFO L125 PetriNetUnfolderBase]: For 933/933 co-relation queries the response was YES. [2024-11-10 18:11:38,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201560 conditions, 122802 events. 52925/122802 cut-off events. For 933/933 co-relation queries the response was YES. Maximal size of possible extension queue 2451. Compared 1503738 event pairs, 49452 based on Foata normal form. 0/107806 useless extension candidates. Maximal degree in co-relation 189945. Up to 77827 conditions per place. [2024-11-10 18:11:38,464 INFO L140 encePairwiseOnDemand]: 289/293 looper letters, 94 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2024-11-10 18:11:38,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 246 transitions, 704 flow [2024-11-10 18:11:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:11:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:11:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2024-11-10 18:11:38,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6336746302616609 [2024-11-10 18:11:38,467 INFO L175 Difference]: Start difference. First operand has 249 places, 248 transitions, 516 flow. Second operand 3 states and 557 transitions. [2024-11-10 18:11:38,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 246 transitions, 704 flow [2024-11-10 18:11:38,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:38,514 INFO L231 Difference]: Finished difference. Result has 247 places, 246 transitions, 512 flow [2024-11-10 18:11:38,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=247, PETRI_TRANSITIONS=246} [2024-11-10 18:11:38,515 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -6 predicate places. [2024-11-10 18:11:38,515 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 246 transitions, 512 flow [2024-11-10 18:11:38,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2024-11-10 18:11:38,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:38,516 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:38,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 18:11:38,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-10 18:11:38,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:38,516 INFO L85 PathProgramCache]: Analyzing trace with hash 32882357, now seen corresponding path program 1 times [2024-11-10 18:11:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:38,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336490881] [2024-11-10 18:11:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:38,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:38,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336490881] [2024-11-10 18:11:38,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336490881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:38,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:38,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:38,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990520790] [2024-11-10 18:11:38,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:38,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:11:38,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:38,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:11:38,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:11:38,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 293 [2024-11-10 18:11:38,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 246 transitions, 512 flow. Second operand has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 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) [2024-11-10 18:11:38,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:38,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 293 [2024-11-10 18:11:38,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:11:47,926 INFO L124 PetriNetUnfolderBase]: 52925/120871 cut-off events. [2024-11-10 18:11:47,927 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-10 18:11:48,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198847 conditions, 120871 events. 52925/120871 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 2368. Compared 1459066 event pairs, 33621 based on Foata normal form. 1/108329 useless extension candidates. Maximal degree in co-relation 198828. Up to 72707 conditions per place. [2024-11-10 18:11:48,531 INFO L140 encePairwiseOnDemand]: 280/293 looper letters, 170 selfloop transitions, 13 changer transitions 0/328 dead transitions. [2024-11-10 18:11:48,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 328 transitions, 1047 flow [2024-11-10 18:11:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:11:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:11:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1089 transitions. [2024-11-10 18:11:48,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6194539249146758 [2024-11-10 18:11:48,534 INFO L175 Difference]: Start difference. First operand has 247 places, 246 transitions, 512 flow. Second operand 6 states and 1089 transitions. [2024-11-10 18:11:48,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 328 transitions, 1047 flow [2024-11-10 18:11:48,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 328 transitions, 1043 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:11:48,538 INFO L231 Difference]: Finished difference. Result has 248 places, 249 transitions, 564 flow [2024-11-10 18:11:48,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=248, PETRI_TRANSITIONS=249} [2024-11-10 18:11:48,539 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -5 predicate places. [2024-11-10 18:11:48,539 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 249 transitions, 564 flow [2024-11-10 18:11:48,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 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) [2024-11-10 18:11:48,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:11:48,540 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:11:48,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 18:11:48,540 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-11-10 18:11:48,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:11:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash 32882358, now seen corresponding path program 1 times [2024-11-10 18:11:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:11:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241334086] [2024-11-10 18:11:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:11:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:11:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:11:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:11:48,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:11:48,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241334086] [2024-11-10 18:11:48,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241334086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:11:48,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:11:48,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:11:48,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781659087] [2024-11-10 18:11:48,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:11:48,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:11:48,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:11:48,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:11:48,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:11:48,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 293 [2024-11-10 18:11:48,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 249 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 152.8) internal successors, (764), 5 states have internal predecessors, (764), 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) [2024-11-10 18:11:48,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:11:48,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 293 [2024-11-10 18:11:48,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand