./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f 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_81-list_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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:19:45,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:19:45,675 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:19:45,680 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:19:45,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:19:45,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:19:45,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:19:45,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:19:45,705 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:19:45,705 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:19:45,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:19:45,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:19:45,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:19:45,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:19:45,706 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:19:45,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:19:45,707 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:19:45,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:19:45,707 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:19:45,707 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:19:45,708 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:19:45,708 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:19:45,708 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:19:45,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:19:45,709 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:19:45,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:19:45,709 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:19:45,709 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:19:45,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:19:45,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:19:45,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:19:45,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:19:45,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:19:45,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:19:45,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:19:45,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:19:45,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:19:45,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:19:45,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:19:45,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:19:45,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:19:45,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:19:45,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2024-11-12 16:19:45,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:19:45,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:19:45,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:19:45,931 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:19:45,931 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:19:45,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-11-12 16:19:47,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:19:47,385 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:19:47,386 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2024-11-12 16:19:47,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6370672f/66aad10ccacc417ba66a8aa68306639f/FLAGb4978ba7c [2024-11-12 16:19:47,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6370672f/66aad10ccacc417ba66a8aa68306639f [2024-11-12 16:19:47,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:19:47,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:19:47,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:19:47,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:19:47,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:19:47,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:47,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce4c75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47, skipping insertion in model container [2024-11-12 16:19:47,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:47,471 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:19:47,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:19:47,884 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:19:47,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:19:47,969 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:19:47,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47 WrapperNode [2024-11-12 16:19:47,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:19:47,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:19:47,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:19:47,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:19:47,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:47,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,022 INFO L138 Inliner]: procedures = 279, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 266 [2024-11-12 16:19:48,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:19:48,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:19:48,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:19:48,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:19:48,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,050 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 2, 5, 5, 14, 2]. 47 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0, 0]. The 10 writes are split as follows [0, 1, 0, 0, 8, 1]. [2024-11-12 16:19:48,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:19:48,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:19:48,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:19:48,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:19:48,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (1/1) ... [2024-11-12 16:19:48,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:19:48,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:19:48,114 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) [2024-11-12 16:19:48,123 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 [2024-11-12 16:19:48,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 16:19:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 16:19:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 16:19:48,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 16:19:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-12 16:19:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-12 16:19:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-12 16:19:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-12 16:19:48,158 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-12 16:19:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 16:19:48,158 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 16:19:48,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-12 16:19:48,160 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 16:19:48,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 16:19:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-12 16:19:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-12 16:19:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 16:19:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 16:19:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:19:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 16:19:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 16:19:48,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 16:19:48,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-12 16:19:48,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-12 16:19:48,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-12 16:19:48,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:19:48,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 16:19:48,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 16:19:48,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 16:19:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-12 16:19:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-12 16:19:48,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:19:48,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:19:48,165 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:19:48,334 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:19:48,335 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:19:48,710 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:19:48,711 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:19:48,994 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:19:48,996 INFO L316 CfgBuilder]: Removed 15 assume(true) statements. [2024-11-12 16:19:48,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:19:48 BoogieIcfgContainer [2024-11-12 16:19:48,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:19:48,998 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:19:48,998 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:19:49,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:19:49,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:19:47" (1/3) ... [2024-11-12 16:19:49,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235f590c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:19:49, skipping insertion in model container [2024-11-12 16:19:49,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:19:47" (2/3) ... [2024-11-12 16:19:49,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235f590c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:19:49, skipping insertion in model container [2024-11-12 16:19:49,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:19:48" (3/3) ... [2024-11-12 16:19:49,003 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2024-11-12 16:19:49,016 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:19:49,017 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-12 16:19:49,017 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:19:49,089 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 16:19:49,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 130 transitions, 280 flow [2024-11-12 16:19:49,200 INFO L124 PetriNetUnfolderBase]: 38/266 cut-off events. [2024-11-12 16:19:49,201 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-12 16:19:49,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 266 events. 38/266 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1413 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 140. Up to 8 conditions per place. [2024-11-12 16:19:49,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 130 transitions, 280 flow [2024-11-12 16:19:49,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 130 transitions, 280 flow [2024-11-12 16:19:49,221 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:19:49,225 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;@401d5f82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:19:49,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-11-12 16:19:49,229 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:19:49,229 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-12 16:19:49,229 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:19:49,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:49,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-12 16:19:49,230 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-12 16:19:49,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:49,234 INFO L85 PathProgramCache]: Analyzing trace with hash 22238, now seen corresponding path program 1 times [2024-11-12 16:19:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:49,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311051698] [2024-11-12 16:19:49,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:49,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:19:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:19:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:19:49,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311051698] [2024-11-12 16:19:49,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311051698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:19:49,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:19:49,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:19:49,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275216060] [2024-11-12 16:19:49,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:19:49,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:19:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:19:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:19:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:19:49,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 130 [2024-11-12 16:19:49,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 130 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-12 16:19:49,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:19:49,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 130 [2024-11-12 16:19:49,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:19:50,265 INFO L124 PetriNetUnfolderBase]: 2588/6143 cut-off events. [2024-11-12 16:19:50,266 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-11-12 16:19:50,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 6143 events. 2588/6143 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 49900 event pairs, 2402 based on Foata normal form. 464/5654 useless extension candidates. Maximal degree in co-relation 9010. Up to 4126 conditions per place. [2024-11-12 16:19:50,306 INFO L140 encePairwiseOnDemand]: 113/130 looper letters, 50 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-11-12 16:19:50,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 114 transitions, 352 flow [2024-11-12 16:19:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:19:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:19:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2024-11-12 16:19:50,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6487179487179487 [2024-11-12 16:19:50,319 INFO L175 Difference]: Start difference. First operand has 116 places, 130 transitions, 280 flow. Second operand 3 states and 253 transitions. [2024-11-12 16:19:50,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 114 transitions, 352 flow [2024-11-12 16:19:50,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:19:50,330 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 252 flow [2024-11-12 16:19:50,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2024-11-12 16:19:50,335 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -1 predicate places. [2024-11-12 16:19:50,336 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 252 flow [2024-11-12 16:19:50,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-12 16:19:50,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:50,336 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-12 16:19:50,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:19:50,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-12 16:19:50,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash 22239, now seen corresponding path program 1 times [2024-11-12 16:19:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:50,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262058184] [2024-11-12 16:19:50,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:50,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:19:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:19:50,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:19:50,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262058184] [2024-11-12 16:19:50,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262058184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:19:50,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:19:50,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:19:50,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138255038] [2024-11-12 16:19:50,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:19:50,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:19:50,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:19:50,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:19:50,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:19:50,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2024-11-12 16:19:50,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-11-12 16:19:50,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:19:50,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2024-11-12 16:19:50,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:19:51,065 INFO L124 PetriNetUnfolderBase]: 2588/6141 cut-off events. [2024-11-12 16:19:51,065 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-11-12 16:19:51,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10362 conditions, 6141 events. 2588/6141 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 49923 event pairs, 2402 based on Foata normal form. 2/5190 useless extension candidates. Maximal degree in co-relation 10350. Up to 4126 conditions per place. [2024-11-12 16:19:51,096 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 49 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-11-12 16:19:51,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 112 transitions, 350 flow [2024-11-12 16:19:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:19:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:19:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-11-12 16:19:51,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6205128205128205 [2024-11-12 16:19:51,098 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 252 flow. Second operand 3 states and 242 transitions. [2024-11-12 16:19:51,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 112 transitions, 350 flow [2024-11-12 16:19:51,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:19:51,102 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 248 flow [2024-11-12 16:19:51,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2024-11-12 16:19:51,102 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -3 predicate places. [2024-11-12 16:19:51,103 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 248 flow [2024-11-12 16:19:51,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-11-12 16:19:51,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:51,103 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 16:19:51,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:19:51,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-12 16:19:51,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash 663145243, now seen corresponding path program 1 times [2024-11-12 16:19:51,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:51,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603297836] [2024-11-12 16:19:51,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:19:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:19:51,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:19:51,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603297836] [2024-11-12 16:19:51,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603297836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:19:51,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:19:51,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:19:51,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703415707] [2024-11-12 16:19:51,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:19:51,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:19:51,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:19:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:19:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:19:51,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 130 [2024-11-12 16:19:51,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-11-12 16:19:51,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:19:51,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 130 [2024-11-12 16:19:51,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:19:51,759 INFO L124 PetriNetUnfolderBase]: 2956/6668 cut-off events. [2024-11-12 16:19:51,760 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-11-12 16:19:51,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11489 conditions, 6668 events. 2956/6668 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 54759 event pairs, 2046 based on Foata normal form. 0/5774 useless extension candidates. Maximal degree in co-relation 11477. Up to 3553 conditions per place. [2024-11-12 16:19:51,795 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 83 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-11-12 16:19:51,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 142 transitions, 478 flow [2024-11-12 16:19:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:19:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:19:51,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-11-12 16:19:51,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-11-12 16:19:51,797 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 248 flow. Second operand 3 states and 270 transitions. [2024-11-12 16:19:51,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 142 transitions, 478 flow [2024-11-12 16:19:51,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 142 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:19:51,801 INFO L231 Difference]: Finished difference. Result has 111 places, 110 transitions, 244 flow [2024-11-12 16:19:51,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=111, PETRI_TRANSITIONS=110} [2024-11-12 16:19:51,802 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -5 predicate places. [2024-11-12 16:19:51,802 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 110 transitions, 244 flow [2024-11-12 16:19:51,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-11-12 16:19:51,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:51,802 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 16:19:51,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 16:19:51,803 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-12 16:19:51,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:51,803 INFO L85 PathProgramCache]: Analyzing trace with hash 663145244, now seen corresponding path program 1 times [2024-11-12 16:19:51,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:51,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351020010] [2024-11-12 16:19:51,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:51,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:19:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:19:51,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:19:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351020010] [2024-11-12 16:19:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351020010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:19:51,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:19:51,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:19:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464428099] [2024-11-12 16:19:51,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:19:51,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:19:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:19:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:19:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:19:51,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 130 [2024-11-12 16:19:51,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 110 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2024-11-12 16:19:51,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:19:51,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 130 [2024-11-12 16:19:51,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:19:52,427 INFO L124 PetriNetUnfolderBase]: 2511/5835 cut-off events. [2024-11-12 16:19:52,427 INFO L125 PetriNetUnfolderBase]: For 355/360 co-relation queries the response was YES. [2024-11-12 16:19:52,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10122 conditions, 5835 events. 2511/5835 cut-off events. For 355/360 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 46712 event pairs, 2165 based on Foata normal form. 1/5019 useless extension candidates. Maximal degree in co-relation 9080. Up to 3977 conditions per place. [2024-11-12 16:19:52,458 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 52 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-11-12 16:19:52,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 360 flow [2024-11-12 16:19:52,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:19:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:19:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-11-12 16:19:52,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2024-11-12 16:19:52,460 INFO L175 Difference]: Start difference. First operand has 111 places, 110 transitions, 244 flow. Second operand 3 states and 249 transitions. [2024-11-12 16:19:52,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 360 flow [2024-11-12 16:19:52,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 113 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:19:52,467 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 261 flow [2024-11-12 16:19:52,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2024-11-12 16:19:52,468 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -4 predicate places. [2024-11-12 16:19:52,470 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 261 flow [2024-11-12 16:19:52,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2024-11-12 16:19:52,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:52,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:19:52,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:19:52,471 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-12 16:19:52,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1088812869, now seen corresponding path program 1 times [2024-11-12 16:19:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:52,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922429139] [2024-11-12 16:19:52,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:52,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:19:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:19:52,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:19:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922429139] [2024-11-12 16:19:52,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922429139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:19:52,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:19:52,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:19:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023853306] [2024-11-12 16:19:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:19:52,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:19:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:19:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:19:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:19:52,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 130 [2024-11-12 16:19:52,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2024-11-12 16:19:52,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:19:52,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 130 [2024-11-12 16:19:52,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:19:53,128 INFO L124 PetriNetUnfolderBase]: 3184/7340 cut-off events. [2024-11-12 16:19:53,129 INFO L125 PetriNetUnfolderBase]: For 376/381 co-relation queries the response was YES. [2024-11-12 16:19:53,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12695 conditions, 7340 events. 3184/7340 cut-off events. For 376/381 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 60149 event pairs, 2356 based on Foata normal form. 0/6286 useless extension candidates. Maximal degree in co-relation 11680. Up to 3955 conditions per place. [2024-11-12 16:19:53,154 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 93 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-11-12 16:19:53,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 154 transitions, 554 flow [2024-11-12 16:19:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:19:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:19:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-11-12 16:19:53,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7282051282051282 [2024-11-12 16:19:53,158 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 261 flow. Second operand 3 states and 284 transitions. [2024-11-12 16:19:53,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 154 transitions, 554 flow [2024-11-12 16:19:53,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 551 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:19:53,161 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 294 flow [2024-11-12 16:19:53,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2024-11-12 16:19:53,162 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, -1 predicate places. [2024-11-12 16:19:53,163 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 294 flow [2024-11-12 16:19:53,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2024-11-12 16:19:53,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:53,164 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:19:53,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 16:19:53,164 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-12 16:19:53,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:53,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1088812868, now seen corresponding path program 1 times [2024-11-12 16:19:53,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:53,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650750446] [2024-11-12 16:19:53,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:53,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:19:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:19:53,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:19:53,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650750446] [2024-11-12 16:19:53,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650750446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:19:53,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:19:53,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:19:53,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123130750] [2024-11-12 16:19:53,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:19:53,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:19:53,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:19:53,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:19:53,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:19:53,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2024-11-12 16:19:53,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-11-12 16:19:53,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:19:53,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2024-11-12 16:19:53,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:19:54,107 INFO L124 PetriNetUnfolderBase]: 3913/8853 cut-off events. [2024-11-12 16:19:54,107 INFO L125 PetriNetUnfolderBase]: For 2988/3329 co-relation queries the response was YES. [2024-11-12 16:19:54,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17314 conditions, 8853 events. 3913/8853 cut-off events. For 2988/3329 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 75627 event pairs, 2795 based on Foata normal form. 543/8263 useless extension candidates. Maximal degree in co-relation 16271. Up to 5385 conditions per place. [2024-11-12 16:19:54,164 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 94 selfloop transitions, 5 changer transitions 0/157 dead transitions. [2024-11-12 16:19:54,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 157 transitions, 599 flow [2024-11-12 16:19:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:19:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:19:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2024-11-12 16:19:54,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2024-11-12 16:19:54,166 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 294 flow. Second operand 3 states and 285 transitions. [2024-11-12 16:19:54,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 157 transitions, 599 flow [2024-11-12 16:19:54,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 157 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:19:54,175 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 321 flow [2024-11-12 16:19:54,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2024-11-12 16:19:54,175 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 0 predicate places. [2024-11-12 16:19:54,176 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 321 flow [2024-11-12 16:19:54,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-11-12 16:19:54,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:54,177 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:19:54,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 16:19:54,177 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-12 16:19:54,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:54,178 INFO L85 PathProgramCache]: Analyzing trace with hash 606420949, now seen corresponding path program 1 times [2024-11-12 16:19:54,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:54,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619564583] [2024-11-12 16:19:54,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:54,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:19:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:19:54,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:19:54,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619564583] [2024-11-12 16:19:54,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619564583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:19:54,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:19:54,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 16:19:54,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685519767] [2024-11-12 16:19:54,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:19:54,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:19:54,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:19:54,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:19:54,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:19:54,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 130 [2024-11-12 16:19:54,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 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) [2024-11-12 16:19:54,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:19:54,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 130 [2024-11-12 16:19:54,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:19:54,941 INFO L124 PetriNetUnfolderBase]: 2268/5316 cut-off events. [2024-11-12 16:19:54,941 INFO L125 PetriNetUnfolderBase]: For 1659/2611 co-relation queries the response was YES. [2024-11-12 16:19:54,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9790 conditions, 5316 events. 2268/5316 cut-off events. For 1659/2611 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 42458 event pairs, 1996 based on Foata normal form. 51/4607 useless extension candidates. Maximal degree in co-relation 9539. Up to 3606 conditions per place. [2024-11-12 16:19:54,969 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 59 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-11-12 16:19:54,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 448 flow [2024-11-12 16:19:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:19:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:19:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2024-11-12 16:19:54,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6019230769230769 [2024-11-12 16:19:54,970 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 321 flow. Second operand 4 states and 313 transitions. [2024-11-12 16:19:54,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 448 flow [2024-11-12 16:19:54,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:19:54,974 INFO L231 Difference]: Finished difference. Result has 119 places, 117 transitions, 324 flow [2024-11-12 16:19:54,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=119, PETRI_TRANSITIONS=117} [2024-11-12 16:19:54,975 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2024-11-12 16:19:54,975 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 117 transitions, 324 flow [2024-11-12 16:19:54,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.6) internal successors, (323), 5 states have internal predecessors, (323), 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) [2024-11-12 16:19:54,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:54,975 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:19:54,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 16:19:54,976 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-12 16:19:54,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1619185383, now seen corresponding path program 1 times [2024-11-12 16:19:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:54,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507867588] [2024-11-12 16:19:54,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:54,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:19:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:19:55,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:19:55,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507867588] [2024-11-12 16:19:55,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507867588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:19:55,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:19:55,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:19:55,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628175592] [2024-11-12 16:19:55,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:19:55,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 16:19:55,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:19:55,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 16:19:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 16:19:55,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 130 [2024-11-12 16:19:55,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 117 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2024-11-12 16:19:55,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:19:55,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 130 [2024-11-12 16:19:55,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:19:55,825 INFO L124 PetriNetUnfolderBase]: 2587/5956 cut-off events. [2024-11-12 16:19:55,825 INFO L125 PetriNetUnfolderBase]: For 1790/2825 co-relation queries the response was YES. [2024-11-12 16:19:55,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10979 conditions, 5956 events. 2587/5956 cut-off events. For 1790/2825 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 48418 event pairs, 2313 based on Foata normal form. 56/5229 useless extension candidates. Maximal degree in co-relation 10820. Up to 4059 conditions per place. [2024-11-12 16:19:55,851 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 65 selfloop transitions, 5 changer transitions 0/127 dead transitions. [2024-11-12 16:19:55,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 127 transitions, 484 flow [2024-11-12 16:19:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:19:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:19:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2024-11-12 16:19:55,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2024-11-12 16:19:55,852 INFO L175 Difference]: Start difference. First operand has 119 places, 117 transitions, 324 flow. Second operand 4 states and 307 transitions. [2024-11-12 16:19:55,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 127 transitions, 484 flow [2024-11-12 16:19:55,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 127 transitions, 476 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-12 16:19:55,856 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 320 flow [2024-11-12 16:19:55,856 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-11-12 16:19:55,858 INFO L279 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2024-11-12 16:19:55,858 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 320 flow [2024-11-12 16:19:55,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2024-11-12 16:19:55,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:55,859 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 16:19:55,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:19:55,859 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-12 16:19:55,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1619181023, now seen corresponding path program 1 times [2024-11-12 16:19:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:55,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936510150] [2024-11-12 16:19:55,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:55,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:19:55,902 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 16:19:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 16:19:55,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 16:19:55,947 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 16:19:55,948 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2024-11-12 16:19:55,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 65 remaining) [2024-11-12 16:19:55,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 65 remaining) [2024-11-12 16:19:55,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 65 remaining) [2024-11-12 16:19:55,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 65 remaining) [2024-11-12 16:19:55,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 65 remaining) [2024-11-12 16:19:55,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 65 remaining) [2024-11-12 16:19:55,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 65 remaining) [2024-11-12 16:19:55,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 65 remaining) [2024-11-12 16:19:55,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (49 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 65 remaining) [2024-11-12 16:19:55,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 65 remaining) [2024-11-12 16:19:55,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 65 remaining) [2024-11-12 16:19:55,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 65 remaining) [2024-11-12 16:19:55,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 65 remaining) [2024-11-12 16:19:55,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 65 remaining) [2024-11-12 16:19:55,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 65 remaining) [2024-11-12 16:19:55,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (36 of 65 remaining) [2024-11-12 16:19:55,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 65 remaining) [2024-11-12 16:19:55,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 65 remaining) [2024-11-12 16:19:55,956 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (10 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 65 remaining) [2024-11-12 16:19:55,957 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 65 remaining) [2024-11-12 16:19:55,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 65 remaining) [2024-11-12 16:19:55,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 65 remaining) [2024-11-12 16:19:55,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 65 remaining) [2024-11-12 16:19:55,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 65 remaining) [2024-11-12 16:19:55,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 65 remaining) [2024-11-12 16:19:55,958 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 65 remaining) [2024-11-12 16:19:55,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 16:19:55,958 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:19:55,964 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 16:19:55,964 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 16:19:56,026 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-12 16:19:56,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 225 transitions, 494 flow [2024-11-12 16:19:56,094 INFO L124 PetriNetUnfolderBase]: 147/827 cut-off events. [2024-11-12 16:19:56,094 INFO L125 PetriNetUnfolderBase]: For 72/85 co-relation queries the response was YES. [2024-11-12 16:19:56,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 827 events. 147/827 cut-off events. For 72/85 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6004 event pairs, 2 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 525. Up to 32 conditions per place. [2024-11-12 16:19:56,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 225 transitions, 494 flow [2024-11-12 16:19:56,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 225 transitions, 494 flow [2024-11-12 16:19:56,113 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:19:56,114 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;@401d5f82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:19:56,114 INFO L334 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2024-11-12 16:19:56,116 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:19:56,116 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-12 16:19:56,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:19:56,116 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:19:56,116 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-12 16:19:56,116 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 87 more)] === [2024-11-12 16:19:56,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:19:56,117 INFO L85 PathProgramCache]: Analyzing trace with hash 29374, now seen corresponding path program 1 times [2024-11-12 16:19:56,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:19:56,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390807181] [2024-11-12 16:19:56,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:19:56,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:19:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:19:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:19:56,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:19:56,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390807181] [2024-11-12 16:19:56,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390807181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:19:56,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:19:56,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:19:56,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995426250] [2024-11-12 16:19:56,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:19:56,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:19:56,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:19:56,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:19:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:19:56,234 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 225 [2024-11-12 16:19:56,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 225 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2024-11-12 16:19:56,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:19:56,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 225 [2024-11-12 16:19:56,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand