./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:10:14,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:10:14,947 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:10:14,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:10:14,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:10:14,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:10:14,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:10:14,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:10:14,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:10:14,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:10:14,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:10:14,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:10:14,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:10:14,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:10:14,987 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:10:14,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:10:14,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:10:14,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:10:14,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:10:14,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:10:14,989 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:10:14,993 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:10:14,993 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:10:14,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:10:14,994 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:10:14,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:10:14,994 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:10:14,995 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:10:14,995 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:10:14,995 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:10:14,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:10:14,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:10:14,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:10:14,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:10:14,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:10:14,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:10:14,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:10:14,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:10:14,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:10:14,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:10:14,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:10:14,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:10:14,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2024-11-10 18:10:15,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:10:15,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:10:15,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:10:15,283 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:10:15,283 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:10:15,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2024-11-10 18:10:16,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:10:17,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:10:17,113 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2024-11-10 18:10:17,137 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fe98ca22/c5d1fdba5903497788693a83cb753def/FLAG88c6d2a7a [2024-11-10 18:10:17,151 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fe98ca22/c5d1fdba5903497788693a83cb753def [2024-11-10 18:10:17,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:10:17,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:10:17,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:17,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:10:17,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:10:17,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:17,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b71aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17, skipping insertion in model container [2024-11-10 18:10:17,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:17,218 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:10:17,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:10:17,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:10:17,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:10:17,907 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:10:17,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17 WrapperNode [2024-11-10 18:10:17,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:10:17,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:10:17,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:10:17,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:10:17,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:17,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:17,979 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 214 [2024-11-10 18:10:17,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:10:17,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:10:17,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:10:17,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:10:17,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:17,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:18,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:18,048 INFO L175 MemorySlicer]: Split 35 memory accesses to 7 slices as follows [2, 5, 5, 5, 2, 14, 2]. 40 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0, 0, 0]. The 10 writes are split as follows [0, 0, 0, 0, 1, 8, 1]. [2024-11-10 18:10:18,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:18,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:18,074 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:18,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:18,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:18,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:18,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:10:18,102 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:10:18,102 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:10:18,102 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:10:18,103 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (1/1) ... [2024-11-10 18:10:18,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:10:18,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:10:18,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:10:18,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:10:18,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 18:10:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 18:10:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 18:10:18,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-10 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-10 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-10 18:10:18,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-10 18:10:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-10 18:10:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-10 18:10:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 18:10:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 18:10:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:10:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:10:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 18:10:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 18:10:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 18:10:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-10 18:10:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-10 18:10:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-10 18:10:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-10 18:10:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:10:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:10:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 18:10:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 18:10:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-10 18:10:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-10 18:10:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-10 18:10:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-10 18:10:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:10:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:10:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 18:10:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 18:10:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 18:10:18,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-10 18:10:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-10 18:10:18,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:10:18,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:10:18,250 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:10:18,499 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:10:18,501 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:10:18,915 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1044: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2024-11-10 18:10:18,916 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1044-1: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2024-11-10 18:10:18,916 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1045: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2024-11-10 18:10:18,916 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1045-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2024-11-10 18:10:18,918 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:10:18,920 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:10:19,168 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:10:19,168 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:10:19,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:10:19 BoogieIcfgContainer [2024-11-10 18:10:19,170 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:10:19,173 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:10:19,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:10:19,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:10:19,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:10:17" (1/3) ... [2024-11-10 18:10:19,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532675fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:10:19, skipping insertion in model container [2024-11-10 18:10:19,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:10:17" (2/3) ... [2024-11-10 18:10:19,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532675fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:10:19, skipping insertion in model container [2024-11-10 18:10:19,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:10:19" (3/3) ... [2024-11-10 18:10:19,182 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2024-11-10 18:10:19,199 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:10:19,199 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-10 18:10:19,199 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:10:19,301 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 18:10:19,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 149 transitions, 318 flow [2024-11-10 18:10:19,437 INFO L124 PetriNetUnfolderBase]: 52/322 cut-off events. [2024-11-10 18:10:19,438 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 18:10:19,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 322 events. 52/322 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1678 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2024-11-10 18:10:19,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 149 transitions, 318 flow [2024-11-10 18:10:19,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 149 transitions, 318 flow [2024-11-10 18:10:19,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:10:19,486 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;@748d4ed8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:10:19,486 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-11-10 18:10:19,491 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:10:19,491 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-10 18:10:19,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:10:19,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:19,492 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:10:19,493 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-10 18:10:19,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash 19287, now seen corresponding path program 1 times [2024-11-10 18:10:19,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:19,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273050801] [2024-11-10 18:10:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:19,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:19,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273050801] [2024-11-10 18:10:19,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273050801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:19,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:19,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:10:19,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433788651] [2024-11-10 18:10:19,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:19,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:19,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:19,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:19,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:19,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 149 [2024-11-10 18:10:19,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 149 transitions, 318 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:19,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:19,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 149 [2024-11-10 18:10:19,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:21,173 INFO L124 PetriNetUnfolderBase]: 2776/6743 cut-off events. [2024-11-10 18:10:21,174 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-10 18:10:21,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 6743 events. 2776/6743 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 58104 event pairs, 2586 based on Foata normal form. 1400/7395 useless extension candidates. Maximal degree in co-relation 9771. Up to 4430 conditions per place. [2024-11-10 18:10:21,245 INFO L140 encePairwiseOnDemand]: 128/149 looper letters, 52 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2024-11-10 18:10:21,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 129 transitions, 386 flow [2024-11-10 18:10:21,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2024-11-10 18:10:21,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 18:10:21,265 INFO L175 Difference]: Start difference. First operand has 131 places, 149 transitions, 318 flow. Second operand 3 states and 298 transitions. [2024-11-10 18:10:21,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 129 transitions, 386 flow [2024-11-10 18:10:21,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 129 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:10:21,278 INFO L231 Difference]: Finished difference. Result has 130 places, 129 transitions, 282 flow [2024-11-10 18:10:21,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=130, PETRI_TRANSITIONS=129} [2024-11-10 18:10:21,286 INFO L277 CegarLoopForPetriNet]: 131 programPoint places, -1 predicate places. [2024-11-10 18:10:21,287 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 129 transitions, 282 flow [2024-11-10 18:10:21,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:21,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:21,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:10:21,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:10:21,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-10 18:10:21,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash 19288, now seen corresponding path program 1 times [2024-11-10 18:10:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174025539] [2024-11-10 18:10:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:21,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:21,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174025539] [2024-11-10 18:10:21,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174025539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:21,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:21,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:10:21,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029191723] [2024-11-10 18:10:21,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:21,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:21,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:21,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:21,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 149 [2024-11-10 18:10:21,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 129 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:21,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:21,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 149 [2024-11-10 18:10:21,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:22,519 INFO L124 PetriNetUnfolderBase]: 2776/6741 cut-off events. [2024-11-10 18:10:22,519 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-11-10 18:10:22,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 6741 events. 2776/6741 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 58172 event pairs, 2586 based on Foata normal form. 2/5995 useless extension candidates. Maximal degree in co-relation 11258. Up to 4430 conditions per place. [2024-11-10 18:10:22,576 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 51 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-10 18:10:22,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 127 transitions, 384 flow [2024-11-10 18:10:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2024-11-10 18:10:22,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6331096196868009 [2024-11-10 18:10:22,579 INFO L175 Difference]: Start difference. First operand has 130 places, 129 transitions, 282 flow. Second operand 3 states and 283 transitions. [2024-11-10 18:10:22,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 127 transitions, 384 flow [2024-11-10 18:10:22,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 127 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:10:22,584 INFO L231 Difference]: Finished difference. Result has 128 places, 127 transitions, 278 flow [2024-11-10 18:10:22,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=128, PETRI_TRANSITIONS=127} [2024-11-10 18:10:22,585 INFO L277 CegarLoopForPetriNet]: 131 programPoint places, -3 predicate places. [2024-11-10 18:10:22,585 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 127 transitions, 278 flow [2024-11-10 18:10:22,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:22,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:22,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 18:10:22,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:10:22,586 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-10 18:10:22,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:22,587 INFO L85 PathProgramCache]: Analyzing trace with hash 647484591, now seen corresponding path program 1 times [2024-11-10 18:10:22,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:22,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778046114] [2024-11-10 18:10:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:22,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:22,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:22,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778046114] [2024-11-10 18:10:22,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778046114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:22,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:22,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:22,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403391] [2024-11-10 18:10:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:22,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:22,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:22,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:22,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 149 [2024-11-10 18:10:22,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:22,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:22,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 149 [2024-11-10 18:10:22,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:23,591 INFO L124 PetriNetUnfolderBase]: 3172/7334 cut-off events. [2024-11-10 18:10:23,592 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-10 18:10:23,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12507 conditions, 7334 events. 3172/7334 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 63196 event pairs, 2202 based on Foata normal form. 0/6640 useless extension candidates. Maximal degree in co-relation 12495. Up to 3813 conditions per place. [2024-11-10 18:10:23,641 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 87 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2024-11-10 18:10:23,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 159 transitions, 520 flow [2024-11-10 18:10:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2024-11-10 18:10:23,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7002237136465325 [2024-11-10 18:10:23,644 INFO L175 Difference]: Start difference. First operand has 128 places, 127 transitions, 278 flow. Second operand 3 states and 313 transitions. [2024-11-10 18:10:23,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 159 transitions, 520 flow [2024-11-10 18:10:23,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 159 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:10:23,649 INFO L231 Difference]: Finished difference. Result has 126 places, 125 transitions, 274 flow [2024-11-10 18:10:23,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2024-11-10 18:10:23,650 INFO L277 CegarLoopForPetriNet]: 131 programPoint places, -5 predicate places. [2024-11-10 18:10:23,650 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 274 flow [2024-11-10 18:10:23,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:23,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:23,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 18:10:23,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:10:23,651 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-10 18:10:23,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:23,652 INFO L85 PathProgramCache]: Analyzing trace with hash 647484592, now seen corresponding path program 1 times [2024-11-10 18:10:23,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:23,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066350121] [2024-11-10 18:10:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:23,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:23,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:23,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066350121] [2024-11-10 18:10:23,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066350121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:23,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:23,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:23,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735070573] [2024-11-10 18:10:23,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:23,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:23,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:23,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:23,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:23,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 149 [2024-11-10 18:10:23,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:23,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:23,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 149 [2024-11-10 18:10:23,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:24,723 INFO L124 PetriNetUnfolderBase]: 2699/6672 cut-off events. [2024-11-10 18:10:24,723 INFO L125 PetriNetUnfolderBase]: For 427/446 co-relation queries the response was YES. [2024-11-10 18:10:24,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11284 conditions, 6672 events. 2699/6672 cut-off events. For 427/446 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 57850 event pairs, 2336 based on Foata normal form. 1/5888 useless extension candidates. Maximal degree in co-relation 10067. Up to 4282 conditions per place. [2024-11-10 18:10:24,793 INFO L140 encePairwiseOnDemand]: 144/149 looper letters, 55 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2024-11-10 18:10:24,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 128 transitions, 396 flow [2024-11-10 18:10:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2024-11-10 18:10:24,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6442953020134228 [2024-11-10 18:10:24,796 INFO L175 Difference]: Start difference. First operand has 126 places, 125 transitions, 274 flow. Second operand 3 states and 288 transitions. [2024-11-10 18:10:24,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 128 transitions, 396 flow [2024-11-10 18:10:24,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 128 transitions, 392 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:10:24,808 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 291 flow [2024-11-10 18:10:24,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=127, PETRI_TRANSITIONS=127} [2024-11-10 18:10:24,811 INFO L277 CegarLoopForPetriNet]: 131 programPoint places, -4 predicate places. [2024-11-10 18:10:24,811 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 291 flow [2024-11-10 18:10:24,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:24,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:24,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:24,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:10:24,813 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-10 18:10:24,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:24,814 INFO L85 PathProgramCache]: Analyzing trace with hash 515983755, now seen corresponding path program 1 times [2024-11-10 18:10:24,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:24,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23653049] [2024-11-10 18:10:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:24,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:24,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:24,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23653049] [2024-11-10 18:10:24,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23653049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:24,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:24,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:24,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192547780] [2024-11-10 18:10:24,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:24,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:24,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:24,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:24,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:24,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 149 [2024-11-10 18:10:24,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:24,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:24,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 149 [2024-11-10 18:10:24,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:25,884 INFO L124 PetriNetUnfolderBase]: 3407/8174 cut-off events. [2024-11-10 18:10:25,884 INFO L125 PetriNetUnfolderBase]: For 421/440 co-relation queries the response was YES. [2024-11-10 18:10:25,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13920 conditions, 8174 events. 3407/8174 cut-off events. For 421/440 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 72810 event pairs, 2435 based on Foata normal form. 0/7252 useless extension candidates. Maximal degree in co-relation 13848. Up to 4252 conditions per place. [2024-11-10 18:10:25,961 INFO L140 encePairwiseOnDemand]: 143/149 looper letters, 97 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2024-11-10 18:10:25,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 171 transitions, 594 flow [2024-11-10 18:10:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2024-11-10 18:10:25,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7315436241610739 [2024-11-10 18:10:25,964 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 291 flow. Second operand 3 states and 327 transitions. [2024-11-10 18:10:25,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 171 transitions, 594 flow [2024-11-10 18:10:25,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 171 transitions, 591 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:10:25,969 INFO L231 Difference]: Finished difference. Result has 130 places, 130 transitions, 324 flow [2024-11-10 18:10:25,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=130, PETRI_TRANSITIONS=130} [2024-11-10 18:10:25,970 INFO L277 CegarLoopForPetriNet]: 131 programPoint places, -1 predicate places. [2024-11-10 18:10:25,970 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 130 transitions, 324 flow [2024-11-10 18:10:25,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:25,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:25,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:25,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:10:25,971 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-10 18:10:25,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash 515983756, now seen corresponding path program 1 times [2024-11-10 18:10:25,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:25,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604718014] [2024-11-10 18:10:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:25,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:26,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604718014] [2024-11-10 18:10:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604718014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:26,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:26,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:10:26,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847685031] [2024-11-10 18:10:26,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:26,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:26,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:26,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 149 [2024-11-10 18:10:26,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 130 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:26,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:26,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 149 [2024-11-10 18:10:26,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:26,871 INFO L124 PetriNetUnfolderBase]: 2835/6906 cut-off events. [2024-11-10 18:10:26,871 INFO L125 PetriNetUnfolderBase]: For 2618/2814 co-relation queries the response was YES. [2024-11-10 18:10:26,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13032 conditions, 6906 events. 2835/6906 cut-off events. For 2618/2814 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 60240 event pairs, 1888 based on Foata normal form. 532/6681 useless extension candidates. Maximal degree in co-relation 11839. Up to 3738 conditions per place. [2024-11-10 18:10:26,935 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 94 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2024-11-10 18:10:26,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 169 transitions, 609 flow [2024-11-10 18:10:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:10:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:10:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2024-11-10 18:10:26,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.727069351230425 [2024-11-10 18:10:26,938 INFO L175 Difference]: Start difference. First operand has 130 places, 130 transitions, 324 flow. Second operand 3 states and 325 transitions. [2024-11-10 18:10:26,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 169 transitions, 609 flow [2024-11-10 18:10:26,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 169 transitions, 599 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:10:26,945 INFO L231 Difference]: Finished difference. Result has 128 places, 128 transitions, 318 flow [2024-11-10 18:10:26,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=128, PETRI_TRANSITIONS=128} [2024-11-10 18:10:26,948 INFO L277 CegarLoopForPetriNet]: 131 programPoint places, -3 predicate places. [2024-11-10 18:10:26,948 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 128 transitions, 318 flow [2024-11-10 18:10:26,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:26,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:26,949 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:26,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:10:26,950 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-10 18:10:26,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1935554794, now seen corresponding path program 1 times [2024-11-10 18:10:26,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:26,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661720992] [2024-11-10 18:10:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:26,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:27,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:27,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661720992] [2024-11-10 18:10:27,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661720992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:10:27,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291088026] [2024-11-10 18:10:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:27,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:10:27,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:10:27,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:10:27,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:10:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:27,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 18:10:27,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:10:27,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 18:10:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:27,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:10:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:27,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291088026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:10:27,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:10:27,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-10 18:10:27,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272888162] [2024-11-10 18:10:27,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:10:27,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 18:10:27,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:27,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 18:10:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:10:27,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 149 [2024-11-10 18:10:27,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 128 transitions, 318 flow. Second operand has 9 states, 9 states have (on average 77.44444444444444) internal successors, (697), 9 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:27,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:27,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 149 [2024-11-10 18:10:27,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:10:28,631 INFO L124 PetriNetUnfolderBase]: 2432/6094 cut-off events. [2024-11-10 18:10:28,632 INFO L125 PetriNetUnfolderBase]: For 1546/1852 co-relation queries the response was YES. [2024-11-10 18:10:28,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10868 conditions, 6094 events. 2432/6094 cut-off events. For 1546/1852 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 52487 event pairs, 1193 based on Foata normal form. 62/5415 useless extension candidates. Maximal degree in co-relation 9650. Up to 3817 conditions per place. [2024-11-10 18:10:28,690 INFO L140 encePairwiseOnDemand]: 143/149 looper letters, 67 selfloop transitions, 6 changer transitions 0/141 dead transitions. [2024-11-10 18:10:28,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 141 transitions, 496 flow [2024-11-10 18:10:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:10:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:10:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 524 transitions. [2024-11-10 18:10:28,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5861297539149888 [2024-11-10 18:10:28,693 INFO L175 Difference]: Start difference. First operand has 128 places, 128 transitions, 318 flow. Second operand 6 states and 524 transitions. [2024-11-10 18:10:28,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 141 transitions, 496 flow [2024-11-10 18:10:28,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 141 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:10:28,703 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 322 flow [2024-11-10 18:10:28,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2024-11-10 18:10:28,705 INFO L277 CegarLoopForPetriNet]: 131 programPoint places, 0 predicate places. [2024-11-10 18:10:28,705 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 322 flow [2024-11-10 18:10:28,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.44444444444444) internal successors, (697), 9 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:28,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:28,706 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:28,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:10:28,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:10:28,909 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-10 18:10:28,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -127342898, now seen corresponding path program 1 times [2024-11-10 18:10:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:28,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182903034] [2024-11-10 18:10:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:10:28,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:10:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:10:28,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:10:28,994 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:10:28,995 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2024-11-10 18:10:28,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 65 remaining) [2024-11-10 18:10:28,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 65 remaining) [2024-11-10 18:10:28,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 65 remaining) [2024-11-10 18:10:28,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 65 remaining) [2024-11-10 18:10:28,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 65 remaining) [2024-11-10 18:10:28,998 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 65 remaining) [2024-11-10 18:10:28,999 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 65 remaining) [2024-11-10 18:10:28,999 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 65 remaining) [2024-11-10 18:10:28,999 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 65 remaining) [2024-11-10 18:10:28,999 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 65 remaining) [2024-11-10 18:10:29,000 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 65 remaining) [2024-11-10 18:10:29,000 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 65 remaining) [2024-11-10 18:10:29,000 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 65 remaining) [2024-11-10 18:10:29,000 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 65 remaining) [2024-11-10 18:10:29,000 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8ASSERT_VIOLATIONMEMORY_LEAK (49 of 65 remaining) [2024-11-10 18:10:29,001 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 65 remaining) [2024-11-10 18:10:29,001 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 65 remaining) [2024-11-10 18:10:29,001 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 65 remaining) [2024-11-10 18:10:29,001 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 65 remaining) [2024-11-10 18:10:29,001 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 65 remaining) [2024-11-10 18:10:29,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 65 remaining) [2024-11-10 18:10:29,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 65 remaining) [2024-11-10 18:10:29,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 65 remaining) [2024-11-10 18:10:29,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 65 remaining) [2024-11-10 18:10:29,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 65 remaining) [2024-11-10 18:10:29,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 65 remaining) [2024-11-10 18:10:29,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 65 remaining) [2024-11-10 18:10:29,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (36 of 65 remaining) [2024-11-10 18:10:29,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 65 remaining) [2024-11-10 18:10:29,003 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 65 remaining) [2024-11-10 18:10:29,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 65 remaining) [2024-11-10 18:10:29,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 65 remaining) [2024-11-10 18:10:29,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 65 remaining) [2024-11-10 18:10:29,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 65 remaining) [2024-11-10 18:10:29,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 65 remaining) [2024-11-10 18:10:29,004 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 65 remaining) [2024-11-10 18:10:29,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 65 remaining) [2024-11-10 18:10:29,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 65 remaining) [2024-11-10 18:10:29,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 65 remaining) [2024-11-10 18:10:29,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 65 remaining) [2024-11-10 18:10:29,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 65 remaining) [2024-11-10 18:10:29,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 65 remaining) [2024-11-10 18:10:29,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 65 remaining) [2024-11-10 18:10:29,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 65 remaining) [2024-11-10 18:10:29,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 65 remaining) [2024-11-10 18:10:29,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 65 remaining) [2024-11-10 18:10:29,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 65 remaining) [2024-11-10 18:10:29,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 65 remaining) [2024-11-10 18:10:29,006 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 65 remaining) [2024-11-10 18:10:29,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 65 remaining) [2024-11-10 18:10:29,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 65 remaining) [2024-11-10 18:10:29,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 65 remaining) [2024-11-10 18:10:29,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 65 remaining) [2024-11-10 18:10:29,007 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8ASSERT_VIOLATIONMEMORY_LEAK (10 of 65 remaining) [2024-11-10 18:10:29,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 65 remaining) [2024-11-10 18:10:29,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 65 remaining) [2024-11-10 18:10:29,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 65 remaining) [2024-11-10 18:10:29,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 65 remaining) [2024-11-10 18:10:29,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 65 remaining) [2024-11-10 18:10:29,008 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 65 remaining) [2024-11-10 18:10:29,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 65 remaining) [2024-11-10 18:10:29,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 65 remaining) [2024-11-10 18:10:29,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 65 remaining) [2024-11-10 18:10:29,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 65 remaining) [2024-11-10 18:10:29,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:10:29,010 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:10:29,013 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:10:29,013 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:10:29,098 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-10 18:10:29,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 251 transitions, 546 flow [2024-11-10 18:10:29,233 INFO L124 PetriNetUnfolderBase]: 191/1001 cut-off events. [2024-11-10 18:10:29,233 INFO L125 PetriNetUnfolderBase]: For 72/79 co-relation queries the response was YES. [2024-11-10 18:10:29,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 1001 events. 191/1001 cut-off events. For 72/79 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7007 event pairs, 1 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 621. Up to 32 conditions per place. [2024-11-10 18:10:29,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 251 transitions, 546 flow [2024-11-10 18:10:29,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 251 transitions, 546 flow [2024-11-10 18:10:29,275 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:10:29,276 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;@748d4ed8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:10:29,276 INFO L334 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2024-11-10 18:10:29,278 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:10:29,278 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-10 18:10:29,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:10:29,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:10:29,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 18:10:29,278 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 87 more)] === [2024-11-10 18:10:29,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:10:29,279 INFO L85 PathProgramCache]: Analyzing trace with hash 27255, now seen corresponding path program 1 times [2024-11-10 18:10:29,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:10:29,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180002615] [2024-11-10 18:10:29,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:10:29,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:10:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:10:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:10:29,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:10:29,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180002615] [2024-11-10 18:10:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180002615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:10:29,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:10:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:10:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129058887] [2024-11-10 18:10:29,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:10:29,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:10:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:10:29,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:10:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:10:29,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 251 [2024-11-10 18:10:29,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 251 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:10:29,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:10:29,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 251 [2024-11-10 18:10:29,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand