./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 3289d67d 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-3289d67-m [2024-11-17 03:30:17,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:30:17,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:30:17,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:30:17,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:30:17,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:30:17,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:30:17,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:30:17,346 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:30:17,347 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:30:17,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:30:17,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:30:17,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:30:17,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:30:17,352 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:30:17,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:30:17,352 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:30:17,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:30:17,353 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:30:17,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:30:17,353 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:30:17,357 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:30:17,358 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:30:17,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:30:17,358 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:30:17,358 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:30:17,359 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:30:17,359 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:30:17,359 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:30:17,359 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:30:17,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:30:17,360 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:30:17,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:30:17,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:30:17,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:30:17,361 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:30:17,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:30:17,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:30:17,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:30:17,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:30:17,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:30:17,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:30:17,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac9952fd378b53dcd8f21391daa9cc75834f7be2a5ad0c70d96fc8524bd08 [2024-11-17 03:30:17,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:30:17,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:30:17,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:30:17,695 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:30:17,696 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:30:17,698 INFO L431 ainManager$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 [2024-11-17 03:30:19,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:30:19,501 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:30:19,502 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_94-alloc_region_racing.i [2024-11-17 03:30:19,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d210588/756aadf5f12b461aaec02a14d55309f9/FLAG301e82251 [2024-11-17 03:30:19,739 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d210588/756aadf5f12b461aaec02a14d55309f9 [2024-11-17 03:30:19,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:30:19,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:30:19,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:19,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:30:19,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:30:19,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:19" (1/1) ... [2024-11-17 03:30:19,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb5d7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:19, skipping insertion in model container [2024-11-17 03:30:19,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:19" (1/1) ... [2024-11-17 03:30:19,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:30:20,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:20,465 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:30:20,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:20,611 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:30:20,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20 WrapperNode [2024-11-17 03:30:20,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:20,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:30:20,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:30:20,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:30:20,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,685 INFO L138 Inliner]: procedures = 378, calls = 83, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 257 [2024-11-17 03:30:20,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:30:20,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:30:20,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:30:20,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:30:20,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,701 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,729 INFO L175 MemorySlicer]: Split 47 memory accesses to 7 slices as follows [2, 2, 20, 5, 5, 5, 8]. 43 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 0, 0, 5, 5, 5, 1]. The 16 writes are split as follows [0, 1, 12, 0, 0, 0, 3]. [2024-11-17 03:30:20,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,759 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:30:20,788 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:30:20,788 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:30:20,788 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:30:20,793 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (1/1) ... [2024-11-17 03:30:20,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:30:20,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:30:20,836 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) [2024-11-17 03:30:20,842 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 [2024-11-17 03:30:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:30:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 03:30:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 03:30:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 03:30:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-17 03:30:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-17 03:30:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-17 03:30:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-17 03:30:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:30:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 03:30:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-17 03:30:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-17 03:30:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-17 03:30:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-17 03:30:20,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-17 03:30:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-17 03:30:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:30:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:30:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:30:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:30:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:30:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-17 03:30:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:30:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:30:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:30:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 03:30:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 03:30:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 03:30:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-17 03:30:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-17 03:30:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-17 03:30:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-17 03:30:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 03:30:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 03:30:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:30:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:30:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:30:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:30:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 03:30:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-17 03:30:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-17 03:30:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:30:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:30:20,925 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:30:21,163 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:30:21,166 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:30:21,785 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1270: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 03:30:21,786 INFO L1250 $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 [2024-11-17 03:30:21,788 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:30:21,788 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:30:21,963 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:30:21,964 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:30:21,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:30:21 BoogieIcfgContainer [2024-11-17 03:30:21,964 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:30:21,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:30:21,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:30:21,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:30:21,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:30:19" (1/3) ... [2024-11-17 03:30:21,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@caa4e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:30:21, skipping insertion in model container [2024-11-17 03:30:21,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:20" (2/3) ... [2024-11-17 03:30:21,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@caa4e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:30:21, skipping insertion in model container [2024-11-17 03:30:21,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:30:21" (3/3) ... [2024-11-17 03:30:21,976 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2024-11-17 03:30:21,993 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:30:21,994 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2024-11-17 03:30:21,994 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:30:22,090 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 03:30:22,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 210 transitions, 427 flow [2024-11-17 03:30:22,313 INFO L124 PetriNetUnfolderBase]: 48/321 cut-off events. [2024-11-17 03:30:22,314 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:30:22,327 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. [2024-11-17 03:30:22,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 210 transitions, 427 flow [2024-11-17 03:30:22,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 210 transitions, 427 flow [2024-11-17 03:30:22,351 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:30:22,357 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;@14e0b80a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:30:22,358 INFO L334 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2024-11-17 03:30:22,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:30:22,361 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-17 03:30:22,361 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:30:22,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:22,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:30:22,362 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)] === [2024-11-17 03:30:22,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash 24810, now seen corresponding path program 1 times [2024-11-17 03:30:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:22,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523237956] [2024-11-17 03:30:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:22,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:22,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:22,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523237956] [2024-11-17 03:30:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523237956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:22,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:22,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:30:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159409946] [2024-11-17 03:30:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:22,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:22,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:22,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2024-11-17 03:30:22,903 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) [2024-11-17 03:30:22,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:22,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2024-11-17 03:30:22,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:23,605 INFO L124 PetriNetUnfolderBase]: 947/3464 cut-off events. [2024-11-17 03:30:23,605 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:30:23,617 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. [2024-11-17 03:30:23,636 INFO L140 encePairwiseOnDemand]: 178/210 looper letters, 91 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2024-11-17 03:30:23,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 204 transitions, 601 flow [2024-11-17 03:30:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2024-11-17 03:30:23,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2024-11-17 03:30:23,652 INFO L175 Difference]: Start difference. First operand has 182 places, 210 transitions, 427 flow. Second operand 3 states and 468 transitions. [2024-11-17 03:30:23,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 204 transitions, 601 flow [2024-11-17 03:30:23,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 204 transitions, 601 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:30:23,662 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 367 flow [2024-11-17 03:30:23,664 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} [2024-11-17 03:30:23,670 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -3 predicate places. [2024-11-17 03:30:23,670 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 367 flow [2024-11-17 03:30:23,671 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) [2024-11-17 03:30:23,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:23,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:30:23,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:30:23,672 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)] === [2024-11-17 03:30:23,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash 24811, now seen corresponding path program 1 times [2024-11-17 03:30:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:23,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196052473] [2024-11-17 03:30:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:23,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:23,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196052473] [2024-11-17 03:30:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196052473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:23,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:23,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:30:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80812748] [2024-11-17 03:30:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:23,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:23,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2024-11-17 03:30:23,865 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) [2024-11-17 03:30:23,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:23,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2024-11-17 03:30:23,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:24,335 INFO L124 PetriNetUnfolderBase]: 976/3559 cut-off events. [2024-11-17 03:30:24,335 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-17 03:30:24,342 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. [2024-11-17 03:30:24,356 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 66 selfloop transitions, 2 changer transitions 0/176 dead transitions. [2024-11-17 03:30:24,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 176 transitions, 499 flow [2024-11-17 03:30:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:24,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2024-11-17 03:30:24,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6396825396825396 [2024-11-17 03:30:24,361 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 367 flow. Second operand 3 states and 403 transitions. [2024-11-17 03:30:24,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 176 transitions, 499 flow [2024-11-17 03:30:24,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 176 transitions, 495 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:24,368 INFO L231 Difference]: Finished difference. Result has 177 places, 176 transitions, 363 flow [2024-11-17 03:30:24,369 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} [2024-11-17 03:30:24,402 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -5 predicate places. [2024-11-17 03:30:24,403 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 176 transitions, 363 flow [2024-11-17 03:30:24,404 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) [2024-11-17 03:30:24,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:24,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:30:24,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:30:24,406 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)] === [2024-11-17 03:30:24,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash 23862645, now seen corresponding path program 1 times [2024-11-17 03:30:24,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:24,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933982782] [2024-11-17 03:30:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:24,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:24,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:24,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933982782] [2024-11-17 03:30:24,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933982782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:24,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:24,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363688061] [2024-11-17 03:30:24,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:24,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:30:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:30:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:30:24,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 210 [2024-11-17 03:30:24,749 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) [2024-11-17 03:30:24,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:24,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 210 [2024-11-17 03:30:24,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:25,422 INFO L124 PetriNetUnfolderBase]: 976/3496 cut-off events. [2024-11-17 03:30:25,422 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:30:25,429 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. [2024-11-17 03:30:25,447 INFO L140 encePairwiseOnDemand]: 198/210 looper letters, 99 selfloop transitions, 11 changer transitions 0/213 dead transitions. [2024-11-17 03:30:25,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 213 transitions, 657 flow [2024-11-17 03:30:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:30:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:30:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 764 transitions. [2024-11-17 03:30:25,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6063492063492063 [2024-11-17 03:30:25,451 INFO L175 Difference]: Start difference. First operand has 177 places, 176 transitions, 363 flow. Second operand 6 states and 764 transitions. [2024-11-17 03:30:25,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 213 transitions, 657 flow [2024-11-17 03:30:25,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 213 transitions, 653 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:25,458 INFO L231 Difference]: Finished difference. Result has 177 places, 177 transitions, 394 flow [2024-11-17 03:30:25,459 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} [2024-11-17 03:30:25,460 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -5 predicate places. [2024-11-17 03:30:25,460 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 177 transitions, 394 flow [2024-11-17 03:30:25,461 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) [2024-11-17 03:30:25,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:25,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:30:25,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:30:25,461 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)] === [2024-11-17 03:30:25,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash 23862646, now seen corresponding path program 1 times [2024-11-17 03:30:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:25,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826036409] [2024-11-17 03:30:25,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:25,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:25,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:25,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826036409] [2024-11-17 03:30:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826036409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:25,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:25,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:25,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258228214] [2024-11-17 03:30:25,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:25,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:30:25,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:25,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:30:25,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:30:25,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2024-11-17 03:30:25,886 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) [2024-11-17 03:30:25,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:25,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2024-11-17 03:30:25,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:26,484 INFO L124 PetriNetUnfolderBase]: 949/3403 cut-off events. [2024-11-17 03:30:26,484 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-11-17 03:30:26,489 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. [2024-11-17 03:30:26,502 INFO L140 encePairwiseOnDemand]: 200/210 looper letters, 89 selfloop transitions, 8 changer transitions 0/198 dead transitions. [2024-11-17 03:30:26,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 198 transitions, 630 flow [2024-11-17 03:30:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:30:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:30:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 757 transitions. [2024-11-17 03:30:26,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6007936507936508 [2024-11-17 03:30:26,505 INFO L175 Difference]: Start difference. First operand has 177 places, 177 transitions, 394 flow. Second operand 6 states and 757 transitions. [2024-11-17 03:30:26,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 198 transitions, 630 flow [2024-11-17 03:30:26,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 198 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:26,509 INFO L231 Difference]: Finished difference. Result has 177 places, 173 transitions, 400 flow [2024-11-17 03:30:26,510 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} [2024-11-17 03:30:26,511 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -5 predicate places. [2024-11-17 03:30:26,511 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 173 transitions, 400 flow [2024-11-17 03:30:26,511 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) [2024-11-17 03:30:26,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:26,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:26,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:30:26,512 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)] === [2024-11-17 03:30:26,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash 195418749, now seen corresponding path program 1 times [2024-11-17 03:30:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199568814] [2024-11-17 03:30:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:26,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:26,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199568814] [2024-11-17 03:30:26,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199568814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:26,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:26,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:26,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436064382] [2024-11-17 03:30:26,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:26,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:26,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:26,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:26,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2024-11-17 03:30:26,648 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) [2024-11-17 03:30:26,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:26,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2024-11-17 03:30:26,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:27,086 INFO L124 PetriNetUnfolderBase]: 1001/3537 cut-off events. [2024-11-17 03:30:27,086 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-11-17 03:30:27,093 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. [2024-11-17 03:30:27,112 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 98 selfloop transitions, 2 changer transitions 0/197 dead transitions. [2024-11-17 03:30:27,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 197 transitions, 650 flow [2024-11-17 03:30:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2024-11-17 03:30:27,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778 [2024-11-17 03:30:27,115 INFO L175 Difference]: Start difference. First operand has 177 places, 173 transitions, 400 flow. Second operand 3 states and 427 transitions. [2024-11-17 03:30:27,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 197 transitions, 650 flow [2024-11-17 03:30:27,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 197 transitions, 634 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 03:30:27,121 INFO L231 Difference]: Finished difference. Result has 172 places, 171 transitions, 384 flow [2024-11-17 03:30:27,122 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} [2024-11-17 03:30:27,123 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -10 predicate places. [2024-11-17 03:30:27,124 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 384 flow [2024-11-17 03:30:27,125 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) [2024-11-17 03:30:27,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:27,125 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:27,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:30:27,125 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)] === [2024-11-17 03:30:27,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash 195418750, now seen corresponding path program 1 times [2024-11-17 03:30:27,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:27,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110403302] [2024-11-17 03:30:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:27,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:27,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:27,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110403302] [2024-11-17 03:30:27,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110403302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:27,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:27,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:27,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881324501] [2024-11-17 03:30:27,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:27,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:27,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:27,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:27,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:27,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 210 [2024-11-17 03:30:27,307 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) [2024-11-17 03:30:27,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:27,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 210 [2024-11-17 03:30:27,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:27,737 INFO L124 PetriNetUnfolderBase]: 1000/3545 cut-off events. [2024-11-17 03:30:27,737 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2024-11-17 03:30:27,744 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. [2024-11-17 03:30:27,757 INFO L140 encePairwiseOnDemand]: 205/210 looper letters, 74 selfloop transitions, 3 changer transitions 0/174 dead transitions. [2024-11-17 03:30:27,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 174 transitions, 544 flow [2024-11-17 03:30:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2024-11-17 03:30:27,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6507936507936508 [2024-11-17 03:30:27,759 INFO L175 Difference]: Start difference. First operand has 172 places, 171 transitions, 384 flow. Second operand 3 states and 410 transitions. [2024-11-17 03:30:27,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 174 transitions, 544 flow [2024-11-17 03:30:27,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 174 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:27,763 INFO L231 Difference]: Finished difference. Result has 173 places, 173 transitions, 401 flow [2024-11-17 03:30:27,764 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} [2024-11-17 03:30:27,764 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -9 predicate places. [2024-11-17 03:30:27,765 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 173 transitions, 401 flow [2024-11-17 03:30:27,765 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) [2024-11-17 03:30:27,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:27,765 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:27,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:30:27,765 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)] === [2024-11-17 03:30:27,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2040072051, now seen corresponding path program 1 times [2024-11-17 03:30:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:27,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786355120] [2024-11-17 03:30:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:27,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:27,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786355120] [2024-11-17 03:30:27,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786355120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:27,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:27,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015129362] [2024-11-17 03:30:27,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:27,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:27,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:27,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2024-11-17 03:30:27,908 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) [2024-11-17 03:30:27,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:27,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2024-11-17 03:30:27,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:28,424 INFO L124 PetriNetUnfolderBase]: 987/3505 cut-off events. [2024-11-17 03:30:28,424 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2024-11-17 03:30:28,431 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. [2024-11-17 03:30:28,443 INFO L140 encePairwiseOnDemand]: 204/210 looper letters, 108 selfloop transitions, 5 changer transitions 0/209 dead transitions. [2024-11-17 03:30:28,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 209 transitions, 710 flow [2024-11-17 03:30:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:28,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2024-11-17 03:30:28,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-17 03:30:28,445 INFO L175 Difference]: Start difference. First operand has 173 places, 173 transitions, 401 flow. Second operand 3 states and 441 transitions. [2024-11-17 03:30:28,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 209 transitions, 710 flow [2024-11-17 03:30:28,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 209 transitions, 707 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:28,450 INFO L231 Difference]: Finished difference. Result has 176 places, 176 transitions, 434 flow [2024-11-17 03:30:28,451 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} [2024-11-17 03:30:28,451 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -6 predicate places. [2024-11-17 03:30:28,451 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 176 transitions, 434 flow [2024-11-17 03:30:28,452 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) [2024-11-17 03:30:28,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:28,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:28,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:30:28,453 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)] === [2024-11-17 03:30:28,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2040072052, now seen corresponding path program 1 times [2024-11-17 03:30:28,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:28,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031374103] [2024-11-17 03:30:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:28,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:28,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031374103] [2024-11-17 03:30:28,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031374103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:28,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612319324] [2024-11-17 03:30:28,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:28,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:28,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 210 [2024-11-17 03:30:28,675 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) [2024-11-17 03:30:28,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:28,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 210 [2024-11-17 03:30:28,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:29,093 INFO L124 PetriNetUnfolderBase]: 951/3378 cut-off events. [2024-11-17 03:30:29,093 INFO L125 PetriNetUnfolderBase]: For 478/508 co-relation queries the response was YES. [2024-11-17 03:30:29,100 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. [2024-11-17 03:30:29,111 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 105 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2024-11-17 03:30:29,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 207 transitions, 725 flow [2024-11-17 03:30:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2024-11-17 03:30:29,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6968253968253968 [2024-11-17 03:30:29,114 INFO L175 Difference]: Start difference. First operand has 176 places, 176 transitions, 434 flow. Second operand 3 states and 439 transitions. [2024-11-17 03:30:29,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 207 transitions, 725 flow [2024-11-17 03:30:29,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 207 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:29,120 INFO L231 Difference]: Finished difference. Result has 174 places, 174 transitions, 428 flow [2024-11-17 03:30:29,120 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} [2024-11-17 03:30:29,122 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -8 predicate places. [2024-11-17 03:30:29,123 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 174 transitions, 428 flow [2024-11-17 03:30:29,123 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) [2024-11-17 03:30:29,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:29,123 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:29,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:30:29,124 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)] === [2024-11-17 03:30:29,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:29,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1999738355, now seen corresponding path program 1 times [2024-11-17 03:30:29,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:29,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476508543] [2024-11-17 03:30:29,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:29,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:29,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476508543] [2024-11-17 03:30:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476508543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:30:29,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271932596] [2024-11-17 03:30:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:29,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:30:29,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:30:29,254 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) [2024-11-17 03:30:29,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:30:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:29,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:30:29,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:30:29,464 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 [2024-11-17 03:30:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:29,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:30:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:29,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271932596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:30:29,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:30:29,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-17 03:30:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497711637] [2024-11-17 03:30:29,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:30:29,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:30:29,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:30:29,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:30:29,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2024-11-17 03:30:29,889 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) [2024-11-17 03:30:29,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:29,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2024-11-17 03:30:29,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:30,416 INFO L124 PetriNetUnfolderBase]: 968/3402 cut-off events. [2024-11-17 03:30:30,417 INFO L125 PetriNetUnfolderBase]: For 337/369 co-relation queries the response was YES. [2024-11-17 03:30:30,424 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. [2024-11-17 03:30:30,438 INFO L140 encePairwiseOnDemand]: 204/210 looper letters, 125 selfloop transitions, 7 changer transitions 0/227 dead transitions. [2024-11-17 03:30:30,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 227 transitions, 810 flow [2024-11-17 03:30:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:30:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:30:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 794 transitions. [2024-11-17 03:30:30,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6301587301587301 [2024-11-17 03:30:30,441 INFO L175 Difference]: Start difference. First operand has 174 places, 174 transitions, 428 flow. Second operand 6 states and 794 transitions. [2024-11-17 03:30:30,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 227 transitions, 810 flow [2024-11-17 03:30:30,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 227 transitions, 798 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:30,446 INFO L231 Difference]: Finished difference. Result has 177 places, 173 transitions, 434 flow [2024-11-17 03:30:30,447 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} [2024-11-17 03:30:30,448 INFO L277 CegarLoopForPetriNet]: 182 programPoint places, -5 predicate places. [2024-11-17 03:30:30,448 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 173 transitions, 434 flow [2024-11-17 03:30:30,449 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) [2024-11-17 03:30:30,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:30,449 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:30,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:30:30,650 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 [2024-11-17 03:30:30,650 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)] === [2024-11-17 03:30:30,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:30,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1862347643, now seen corresponding path program 1 times [2024-11-17 03:30:30,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:30,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151417643] [2024-11-17 03:30:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:30,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:30:30,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:30:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:30:30,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:30:30,745 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:30:30,747 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (82 of 83 remaining) [2024-11-17 03:30:30,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 83 remaining) [2024-11-17 03:30:30,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 83 remaining) [2024-11-17 03:30:30,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 83 remaining) [2024-11-17 03:30:30,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 83 remaining) [2024-11-17 03:30:30,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 83 remaining) [2024-11-17 03:30:30,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 83 remaining) [2024-11-17 03:30:30,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 83 remaining) [2024-11-17 03:30:30,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 83 remaining) [2024-11-17 03:30:30,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 83 remaining) [2024-11-17 03:30:30,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 83 remaining) [2024-11-17 03:30:30,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 83 remaining) [2024-11-17 03:30:30,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 83 remaining) [2024-11-17 03:30:30,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 83 remaining) [2024-11-17 03:30:30,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 83 remaining) [2024-11-17 03:30:30,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 83 remaining) [2024-11-17 03:30:30,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 83 remaining) [2024-11-17 03:30:30,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 83 remaining) [2024-11-17 03:30:30,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 83 remaining) [2024-11-17 03:30:30,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 83 remaining) [2024-11-17 03:30:30,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 83 remaining) [2024-11-17 03:30:30,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 83 remaining) [2024-11-17 03:30:30,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 83 remaining) [2024-11-17 03:30:30,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 83 remaining) [2024-11-17 03:30:30,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 83 remaining) [2024-11-17 03:30:30,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 83 remaining) [2024-11-17 03:30:30,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 83 remaining) [2024-11-17 03:30:30,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 83 remaining) [2024-11-17 03:30:30,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 83 remaining) [2024-11-17 03:30:30,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (53 of 83 remaining) [2024-11-17 03:30:30,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 83 remaining) [2024-11-17 03:30:30,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 83 remaining) [2024-11-17 03:30:30,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 83 remaining) [2024-11-17 03:30:30,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 83 remaining) [2024-11-17 03:30:30,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 83 remaining) [2024-11-17 03:30:30,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 83 remaining) [2024-11-17 03:30:30,755 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 83 remaining) [2024-11-17 03:30:30,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 83 remaining) [2024-11-17 03:30:30,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 83 remaining) [2024-11-17 03:30:30,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 83 remaining) [2024-11-17 03:30:30,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (42 of 83 remaining) [2024-11-17 03:30:30,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 83 remaining) [2024-11-17 03:30:30,756 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 83 remaining) [2024-11-17 03:30:30,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 83 remaining) [2024-11-17 03:30:30,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 83 remaining) [2024-11-17 03:30:30,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 83 remaining) [2024-11-17 03:30:30,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 83 remaining) [2024-11-17 03:30:30,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 83 remaining) [2024-11-17 03:30:30,757 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 83 remaining) [2024-11-17 03:30:30,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 83 remaining) [2024-11-17 03:30:30,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 83 remaining) [2024-11-17 03:30:30,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 83 remaining) [2024-11-17 03:30:30,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 83 remaining) [2024-11-17 03:30:30,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 83 remaining) [2024-11-17 03:30:30,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 83 remaining) [2024-11-17 03:30:30,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 83 remaining) [2024-11-17 03:30:30,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 83 remaining) [2024-11-17 03:30:30,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 83 remaining) [2024-11-17 03:30:30,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 83 remaining) [2024-11-17 03:30:30,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 83 remaining) [2024-11-17 03:30:30,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 83 remaining) [2024-11-17 03:30:30,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (21 of 83 remaining) [2024-11-17 03:30:30,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 83 remaining) [2024-11-17 03:30:30,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 83 remaining) [2024-11-17 03:30:30,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 83 remaining) [2024-11-17 03:30:30,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 83 remaining) [2024-11-17 03:30:30,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 83 remaining) [2024-11-17 03:30:30,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 83 remaining) [2024-11-17 03:30:30,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 83 remaining) [2024-11-17 03:30:30,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 83 remaining) [2024-11-17 03:30:30,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 83 remaining) [2024-11-17 03:30:30,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 83 remaining) [2024-11-17 03:30:30,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 83 remaining) [2024-11-17 03:30:30,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:30:30,763 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:30:30,765 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:30:30,765 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:30:30,828 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:30:30,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 293 transitions, 602 flow [2024-11-17 03:30:30,894 INFO L124 PetriNetUnfolderBase]: 81/530 cut-off events. [2024-11-17 03:30:30,894 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 03:30:30,899 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. [2024-11-17 03:30:30,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 293 transitions, 602 flow [2024-11-17 03:30:30,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 293 transitions, 602 flow [2024-11-17 03:30:30,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:30:30,911 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;@14e0b80a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:30:30,912 INFO L334 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2024-11-17 03:30:30,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:30:30,913 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-17 03:30:30,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:30:30,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:30,913 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:30:30,913 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)] === [2024-11-17 03:30:30,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:30,913 INFO L85 PathProgramCache]: Analyzing trace with hash 34186, now seen corresponding path program 1 times [2024-11-17 03:30:30,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:30,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707309949] [2024-11-17 03:30:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:30,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:30,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707309949] [2024-11-17 03:30:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707309949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:30,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:30:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749051357] [2024-11-17 03:30:30,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:30,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:30,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:30,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:30,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:31,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 293 [2024-11-17 03:30:31,036 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) [2024-11-17 03:30:31,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:31,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 293 [2024-11-17 03:30:31,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:41,397 INFO L124 PetriNetUnfolderBase]: 51356/118458 cut-off events. [2024-11-17 03:30:41,397 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-17 03:30:41,639 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. [2024-11-17 03:30:42,297 INFO L140 encePairwiseOnDemand]: 249/293 looper letters, 145 selfloop transitions, 2 changer transitions 0/300 dead transitions. [2024-11-17 03:30:42,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 300 transitions, 910 flow [2024-11-17 03:30:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:42,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2024-11-17 03:30:42,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.764505119453925 [2024-11-17 03:30:42,300 INFO L175 Difference]: Start difference. First operand has 253 places, 293 transitions, 602 flow. Second operand 3 states and 672 transitions. [2024-11-17 03:30:42,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 300 transitions, 910 flow [2024-11-17 03:30:42,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 300 transitions, 910 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:30:42,306 INFO L231 Difference]: Finished difference. Result has 249 places, 248 transitions, 516 flow [2024-11-17 03:30:42,307 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} [2024-11-17 03:30:42,307 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -4 predicate places. [2024-11-17 03:30:42,308 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 248 transitions, 516 flow [2024-11-17 03:30:42,308 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) [2024-11-17 03:30:42,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:42,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:30:42,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:30:42,309 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)] === [2024-11-17 03:30:42,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash 34187, now seen corresponding path program 1 times [2024-11-17 03:30:42,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:42,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937334153] [2024-11-17 03:30:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:42,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:42,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:42,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937334153] [2024-11-17 03:30:42,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937334153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:42,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:42,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:30:42,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126437346] [2024-11-17 03:30:42,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:42,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:42,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:42,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 293 [2024-11-17 03:30:42,475 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) [2024-11-17 03:30:42,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:42,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 293 [2024-11-17 03:30:42,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:52,779 INFO L124 PetriNetUnfolderBase]: 52925/122802 cut-off events. [2024-11-17 03:30:52,779 INFO L125 PetriNetUnfolderBase]: For 933/933 co-relation queries the response was YES. [2024-11-17 03:30:52,981 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. [2024-11-17 03:30:53,436 INFO L140 encePairwiseOnDemand]: 289/293 looper letters, 94 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2024-11-17 03:30:53,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 246 transitions, 704 flow [2024-11-17 03:30:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2024-11-17 03:30:53,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6336746302616609 [2024-11-17 03:30:53,438 INFO L175 Difference]: Start difference. First operand has 249 places, 248 transitions, 516 flow. Second operand 3 states and 557 transitions. [2024-11-17 03:30:53,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 246 transitions, 704 flow [2024-11-17 03:30:53,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:53,471 INFO L231 Difference]: Finished difference. Result has 247 places, 246 transitions, 512 flow [2024-11-17 03:30:53,472 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} [2024-11-17 03:30:53,473 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -6 predicate places. [2024-11-17 03:30:53,473 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 246 transitions, 512 flow [2024-11-17 03:30:53,473 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) [2024-11-17 03:30:53,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:53,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:30:53,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:30:53,474 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)] === [2024-11-17 03:30:53,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash 32882357, now seen corresponding path program 1 times [2024-11-17 03:30:53,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:53,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72381593] [2024-11-17 03:30:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:53,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:53,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:53,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72381593] [2024-11-17 03:30:53,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72381593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:53,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875637156] [2024-11-17 03:30:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:53,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:30:53,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:30:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:30:53,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 293 [2024-11-17 03:30:53,737 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) [2024-11-17 03:30:53,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:53,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 293 [2024-11-17 03:30:53,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:31:03,250 INFO L124 PetriNetUnfolderBase]: 52925/120871 cut-off events. [2024-11-17 03:31:03,250 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-17 03:31:03,439 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. [2024-11-17 03:31:03,802 INFO L140 encePairwiseOnDemand]: 280/293 looper letters, 170 selfloop transitions, 13 changer transitions 0/328 dead transitions. [2024-11-17 03:31:03,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 328 transitions, 1047 flow [2024-11-17 03:31:03,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:31:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:31:03,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1089 transitions. [2024-11-17 03:31:03,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6194539249146758 [2024-11-17 03:31:03,806 INFO L175 Difference]: Start difference. First operand has 247 places, 246 transitions, 512 flow. Second operand 6 states and 1089 transitions. [2024-11-17 03:31:03,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 328 transitions, 1047 flow [2024-11-17 03:31:03,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 328 transitions, 1043 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:31:03,812 INFO L231 Difference]: Finished difference. Result has 248 places, 249 transitions, 564 flow [2024-11-17 03:31:03,812 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} [2024-11-17 03:31:03,813 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -5 predicate places. [2024-11-17 03:31:03,813 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 249 transitions, 564 flow [2024-11-17 03:31:03,814 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) [2024-11-17 03:31:03,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:31:03,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:31:03,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:31:03,814 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)] === [2024-11-17 03:31:03,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:31:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 32882358, now seen corresponding path program 1 times [2024-11-17 03:31:03,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:31:03,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25415490] [2024-11-17 03:31:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:31:03,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:31:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:31:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:04,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:31:04,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25415490] [2024-11-17 03:31:04,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25415490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:31:04,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:31:04,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:31:04,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574902281] [2024-11-17 03:31:04,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:31:04,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:31:04,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:31:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:31:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:31:04,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 293 [2024-11-17 03:31:04,275 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) [2024-11-17 03:31:04,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:31:04,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 293 [2024-11-17 03:31:04,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand