./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 c7c6ca5d 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-?-c7c6ca5-m [2024-11-09 10:43:43,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:43:43,563 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:43:43,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:43:43,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:43:43,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:43:43,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:43:43,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:43:43,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:43:43,590 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:43:43,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:43:43,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:43:43,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:43:43,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:43:43,592 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:43:43,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:43:43,593 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:43:43,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:43:43,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:43:43,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:43:43,593 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:43:43,596 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:43:43,596 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:43:43,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:43:43,597 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:43:43,597 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:43:43,597 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:43:43,597 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:43:43,597 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:43:43,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:43:43,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:43:43,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:43:43,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:43:43,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:43:43,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:43:43,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:43:43,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:43:43,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:43:43,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:43:43,599 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:43:43,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:43:43,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:43:43,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2024-11-09 10:43:43,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:43:43,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:43:43,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:43:43,818 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:43:43,819 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:43:43,820 INFO L431 ainManager$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 [2024-11-09 10:43:45,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:43:45,229 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:43:45,230 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2024-11-09 10:43:45,243 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/467125a98/ede7b14261414013849495be8579cc10/FLAG133988e81 [2024-11-09 10:43:45,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/467125a98/ede7b14261414013849495be8579cc10 [2024-11-09 10:43:45,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:43:45,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:43:45,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:43:45,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:43:45,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:43:45,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c573c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45, skipping insertion in model container [2024-11-09 10:43:45,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,304 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:43:45,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:43:45,728 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:43:45,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:43:45,820 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:43:45,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45 WrapperNode [2024-11-09 10:43:45,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:43:45,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:43:45,822 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:43:45,822 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:43:45,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,869 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2024-11-09 10:43:45,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:43:45,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:43:45,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:43:45,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:43:45,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,884 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,900 INFO L175 MemorySlicer]: Split 35 memory accesses to 7 slices as follows [2, 5, 5, 5, 2, 2, 14]. 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, 1, 8]. [2024-11-09 10:43:45,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,921 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:43:45,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:43:45,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:43:45,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:43:45,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (1/1) ... [2024-11-09 10:43:45,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:43:45,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:43:45,959 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) [2024-11-09 10:43:45,969 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 [2024-11-09 10:43:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 10:43:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 10:43:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 10:43:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 10:43:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-09 10:43:46,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-09 10:43:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-09 10:43:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-09 10:43:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-09 10:43:46,008 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-09 10:43:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 10:43:46,008 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:43:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:43:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:43:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 10:43:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 10:43:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 10:43:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 10:43:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-09 10:43:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-09 10:43:46,011 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-09 10:43:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 10:43:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 10:43:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:43:46,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:43:46,016 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:43:46,182 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:43:46,184 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:43:46,498 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:43:46,498 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:43:46,657 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:43:46,658 INFO L316 CfgBuilder]: Removed 15 assume(true) statements. [2024-11-09 10:43:46,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:46 BoogieIcfgContainer [2024-11-09 10:43:46,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:43:46,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:43:46,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:43:46,662 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:43:46,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:43:45" (1/3) ... [2024-11-09 10:43:46,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4c8082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:46, skipping insertion in model container [2024-11-09 10:43:46,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:45" (2/3) ... [2024-11-09 10:43:46,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4c8082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:46, skipping insertion in model container [2024-11-09 10:43:46,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:46" (3/3) ... [2024-11-09 10:43:46,665 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2024-11-09 10:43:46,677 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:43:46,677 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-09 10:43:46,677 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:43:46,775 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 10:43:46,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 133 transitions, 286 flow [2024-11-09 10:43:46,888 INFO L124 PetriNetUnfolderBase]: 38/272 cut-off events. [2024-11-09 10:43:46,888 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 10:43:46,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 272 events. 38/272 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1387 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2024-11-09 10:43:46,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 133 transitions, 286 flow [2024-11-09 10:43:46,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 133 transitions, 286 flow [2024-11-09 10:43:46,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:43:46,908 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;@723c9d9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:43:46,908 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-11-09 10:43:46,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:43:46,910 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-09 10:43:46,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:43:46,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:46,912 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:43:46,912 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-09 10:43:46,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 19196, now seen corresponding path program 1 times [2024-11-09 10:43:46,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:46,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611815925] [2024-11-09 10:43:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611815925] [2024-11-09 10:43:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611815925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:47,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:47,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:43:47,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982891417] [2024-11-09 10:43:47,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:47,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:43:47,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:47,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:43:47,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:43:47,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2024-11-09 10:43:47,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 133 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:47,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:47,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2024-11-09 10:43:47,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:48,043 INFO L124 PetriNetUnfolderBase]: 2776/6503 cut-off events. [2024-11-09 10:43:48,044 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-11-09 10:43:48,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11030 conditions, 6503 events. 2776/6503 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 52197 event pairs, 2586 based on Foata normal form. 464/5986 useless extension candidates. Maximal degree in co-relation 9591. Up to 4430 conditions per place. [2024-11-09 10:43:48,090 INFO L140 encePairwiseOnDemand]: 116/133 looper letters, 52 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-11-09 10:43:48,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 117 transitions, 362 flow [2024-11-09 10:43:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:43:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:43:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2024-11-09 10:43:48,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466165413533834 [2024-11-09 10:43:48,102 INFO L175 Difference]: Start difference. First operand has 119 places, 133 transitions, 286 flow. Second operand 3 states and 258 transitions. [2024-11-09 10:43:48,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 117 transitions, 362 flow [2024-11-09 10:43:48,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 117 transitions, 362 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:43:48,114 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 258 flow [2024-11-09 10:43:48,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2024-11-09 10:43:48,120 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2024-11-09 10:43:48,120 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 258 flow [2024-11-09 10:43:48,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:48,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:48,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:43:48,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:43:48,121 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-09 10:43:48,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash 19197, now seen corresponding path program 1 times [2024-11-09 10:43:48,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:48,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520729220] [2024-11-09 10:43:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:48,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520729220] [2024-11-09 10:43:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520729220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:48,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:43:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598618863] [2024-11-09 10:43:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:48,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:43:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:43:48,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:43:48,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 133 [2024-11-09 10:43:48,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2024-11-09 10:43:48,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:48,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 133 [2024-11-09 10:43:48,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:48,833 INFO L124 PetriNetUnfolderBase]: 2776/6501 cut-off events. [2024-11-09 10:43:48,834 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-11-09 10:43:48,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11030 conditions, 6501 events. 2776/6501 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 52233 event pairs, 2586 based on Foata normal form. 2/5522 useless extension candidates. Maximal degree in co-relation 11018. Up to 4430 conditions per place. [2024-11-09 10:43:48,908 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 51 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-11-09 10:43:48,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 360 flow [2024-11-09 10:43:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:43:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:43:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2024-11-09 10:43:48,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-09 10:43:48,910 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 258 flow. Second operand 3 states and 247 transitions. [2024-11-09 10:43:48,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 360 flow [2024-11-09 10:43:48,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:43:48,917 INFO L231 Difference]: Finished difference. Result has 116 places, 115 transitions, 254 flow [2024-11-09 10:43:48,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=116, PETRI_TRANSITIONS=115} [2024-11-09 10:43:48,918 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2024-11-09 10:43:48,918 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 115 transitions, 254 flow [2024-11-09 10:43:48,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2024-11-09 10:43:48,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:48,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 10:43:48,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:43:48,919 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-09 10:43:48,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:48,919 INFO L85 PathProgramCache]: Analyzing trace with hash 572421084, now seen corresponding path program 1 times [2024-11-09 10:43:48,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:48,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340209371] [2024-11-09 10:43:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:48,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:48,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340209371] [2024-11-09 10:43:48,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340209371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:48,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:48,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:43:48,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890576931] [2024-11-09 10:43:48,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:48,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:43:48,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:43:48,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:43:49,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 133 [2024-11-09 10:43:49,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 115 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2024-11-09 10:43:49,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:49,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 133 [2024-11-09 10:43:49,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:49,541 INFO L124 PetriNetUnfolderBase]: 3172/7101 cut-off events. [2024-11-09 10:43:49,541 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-11-09 10:43:49,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12274 conditions, 7101 events. 3172/7101 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 58006 event pairs, 2202 based on Foata normal form. 0/6166 useless extension candidates. Maximal degree in co-relation 12262. Up to 3813 conditions per place. [2024-11-09 10:43:49,574 INFO L140 encePairwiseOnDemand]: 129/133 looper letters, 87 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-11-09 10:43:49,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 147 transitions, 496 flow [2024-11-09 10:43:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:43:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:43:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2024-11-09 10:43:49,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6942355889724311 [2024-11-09 10:43:49,579 INFO L175 Difference]: Start difference. First operand has 116 places, 115 transitions, 254 flow. Second operand 3 states and 277 transitions. [2024-11-09 10:43:49,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 147 transitions, 496 flow [2024-11-09 10:43:49,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 147 transitions, 492 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:43:49,584 INFO L231 Difference]: Finished difference. Result has 114 places, 113 transitions, 250 flow [2024-11-09 10:43:49,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=114, PETRI_TRANSITIONS=113} [2024-11-09 10:43:49,585 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -5 predicate places. [2024-11-09 10:43:49,585 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 113 transitions, 250 flow [2024-11-09 10:43:49,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2024-11-09 10:43:49,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:49,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 10:43:49,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:43:49,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-09 10:43:49,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:49,587 INFO L85 PathProgramCache]: Analyzing trace with hash 572421085, now seen corresponding path program 1 times [2024-11-09 10:43:49,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:49,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445627872] [2024-11-09 10:43:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:49,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:49,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445627872] [2024-11-09 10:43:49,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445627872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:49,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:43:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905513648] [2024-11-09 10:43:49,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:49,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:43:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:43:49,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:43:49,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2024-11-09 10:43:49,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 113 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2024-11-09 10:43:49,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:49,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2024-11-09 10:43:49,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:50,387 INFO L124 PetriNetUnfolderBase]: 2693/6180 cut-off events. [2024-11-09 10:43:50,388 INFO L125 PetriNetUnfolderBase]: For 378/382 co-relation queries the response was YES. [2024-11-09 10:43:50,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10779 conditions, 6180 events. 2693/6180 cut-off events. For 378/382 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 48945 event pairs, 2532 based on Foata normal form. 1/5349 useless extension candidates. Maximal degree in co-relation 9671. Up to 4269 conditions per place. [2024-11-09 10:43:50,410 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 54 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2024-11-09 10:43:50,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 116 transitions, 370 flow [2024-11-09 10:43:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:43:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:43:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2024-11-09 10:43:50,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6365914786967418 [2024-11-09 10:43:50,412 INFO L175 Difference]: Start difference. First operand has 114 places, 113 transitions, 250 flow. Second operand 3 states and 254 transitions. [2024-11-09 10:43:50,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 116 transitions, 370 flow [2024-11-09 10:43:50,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:43:50,417 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 267 flow [2024-11-09 10:43:50,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2024-11-09 10:43:50,418 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -4 predicate places. [2024-11-09 10:43:50,419 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 267 flow [2024-11-09 10:43:50,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2024-11-09 10:43:50,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:50,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:43:50,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:43:50,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-09 10:43:50,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:50,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1977082409, now seen corresponding path program 1 times [2024-11-09 10:43:50,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:50,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467482591] [2024-11-09 10:43:50,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:50,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:50,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:50,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467482591] [2024-11-09 10:43:50,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467482591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:50,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:50,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:43:50,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21491926] [2024-11-09 10:43:50,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:50,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:43:50,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:43:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:43:50,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 133 [2024-11-09 10:43:50,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:50,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:50,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 133 [2024-11-09 10:43:50,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:51,051 INFO L124 PetriNetUnfolderBase]: 3410/7730 cut-off events. [2024-11-09 10:43:51,052 INFO L125 PetriNetUnfolderBase]: For 401/405 co-relation queries the response was YES. [2024-11-09 10:43:51,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13474 conditions, 7730 events. 3410/7730 cut-off events. For 401/405 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 63052 event pairs, 2342 based on Foata normal form. 0/6712 useless extension candidates. Maximal degree in co-relation 13403. Up to 4247 conditions per place. [2024-11-09 10:43:51,082 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 97 selfloop transitions, 5 changer transitions 0/159 dead transitions. [2024-11-09 10:43:51,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 159 transitions, 572 flow [2024-11-09 10:43:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:43:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:43:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2024-11-09 10:43:51,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7293233082706767 [2024-11-09 10:43:51,084 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 267 flow. Second operand 3 states and 291 transitions. [2024-11-09 10:43:51,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 159 transitions, 572 flow [2024-11-09 10:43:51,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 159 transitions, 569 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:43:51,087 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 300 flow [2024-11-09 10:43:51,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2024-11-09 10:43:51,088 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2024-11-09 10:43:51,088 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 300 flow [2024-11-09 10:43:51,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:51,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:51,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:43:51,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:43:51,089 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-09 10:43:51,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1977082410, now seen corresponding path program 1 times [2024-11-09 10:43:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:51,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194587211] [2024-11-09 10:43:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:51,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:51,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:51,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194587211] [2024-11-09 10:43:51,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194587211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:51,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:51,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:43:51,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778028717] [2024-11-09 10:43:51,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:51,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:43:51,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:51,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:43:51,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:43:51,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 133 [2024-11-09 10:43:51,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2024-11-09 10:43:51,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:51,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 133 [2024-11-09 10:43:51,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:51,908 INFO L124 PetriNetUnfolderBase]: 4197/9380 cut-off events. [2024-11-09 10:43:51,908 INFO L125 PetriNetUnfolderBase]: For 2915/3220 co-relation queries the response was YES. [2024-11-09 10:43:51,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18519 conditions, 9380 events. 4197/9380 cut-off events. For 2915/3220 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 79259 event pairs, 3189 based on Foata normal form. 582/8834 useless extension candidates. Maximal degree in co-relation 17409. Up to 5783 conditions per place. [2024-11-09 10:43:51,957 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 98 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-09 10:43:51,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 162 transitions, 617 flow [2024-11-09 10:43:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:43:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:43:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2024-11-09 10:43:51,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.731829573934837 [2024-11-09 10:43:51,959 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 300 flow. Second operand 3 states and 292 transitions. [2024-11-09 10:43:51,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 162 transitions, 617 flow [2024-11-09 10:43:51,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 162 transitions, 603 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:43:51,965 INFO L231 Difference]: Finished difference. Result has 119 places, 121 transitions, 327 flow [2024-11-09 10:43:51,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=119, PETRI_TRANSITIONS=121} [2024-11-09 10:43:51,966 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2024-11-09 10:43:51,966 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 327 flow [2024-11-09 10:43:51,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2024-11-09 10:43:51,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:51,966 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:43:51,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:43:51,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-09 10:43:51,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1159900417, now seen corresponding path program 1 times [2024-11-09 10:43:51,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:51,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126056380] [2024-11-09 10:43:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:52,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:52,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126056380] [2024-11-09 10:43:52,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126056380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:43:52,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697227578] [2024-11-09 10:43:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:52,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:43:52,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:43:52,079 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) [2024-11-09 10:43:52,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:43:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:52,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:43:52,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:43:52,240 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 [2024-11-09 10:43:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:52,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:43:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:52,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697227578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:43:52,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:43:52,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-09 10:43:52,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983454716] [2024-11-09 10:43:52,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:43:52,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 10:43:52,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:52,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 10:43:52,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 10:43:52,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 133 [2024-11-09 10:43:52,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 327 flow. Second operand has 9 states, 9 states have (on average 66.44444444444444) internal successors, (598), 9 states have internal predecessors, (598), 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) [2024-11-09 10:43:52,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:52,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 133 [2024-11-09 10:43:52,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:53,244 INFO L124 PetriNetUnfolderBase]: 2427/5592 cut-off events. [2024-11-09 10:43:53,245 INFO L125 PetriNetUnfolderBase]: For 2263/3573 co-relation queries the response was YES. [2024-11-09 10:43:53,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10366 conditions, 5592 events. 2427/5592 cut-off events. For 2263/3573 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 43961 event pairs, 2145 based on Foata normal form. 61/4897 useless extension candidates. Maximal degree in co-relation 10155. Up to 3817 conditions per place. [2024-11-09 10:43:53,263 INFO L140 encePairwiseOnDemand]: 128/133 looper letters, 66 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-11-09 10:43:53,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 493 flow [2024-11-09 10:43:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:43:53,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:43:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2024-11-09 10:43:53,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5726817042606517 [2024-11-09 10:43:53,265 INFO L175 Difference]: Start difference. First operand has 119 places, 121 transitions, 327 flow. Second operand 6 states and 457 transitions. [2024-11-09 10:43:53,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 493 flow [2024-11-09 10:43:53,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 132 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:43:53,268 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 326 flow [2024-11-09 10:43:53,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2024-11-09 10:43:53,269 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, 3 predicate places. [2024-11-09 10:43:53,269 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 326 flow [2024-11-09 10:43:53,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 66.44444444444444) internal successors, (598), 9 states have internal predecessors, (598), 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) [2024-11-09 10:43:53,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:53,271 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:43:53,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:43:53,471 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 [2024-11-09 10:43:53,472 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-09 10:43:53,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1597301789, now seen corresponding path program 1 times [2024-11-09 10:43:53,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:53,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720475240] [2024-11-09 10:43:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:53,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:53,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:53,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720475240] [2024-11-09 10:43:53,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720475240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:43:53,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397753943] [2024-11-09 10:43:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:53,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:43:53,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:43:53,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:43:53,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:43:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:53,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 10:43:53,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:43:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:53,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:43:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:53,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397753943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:43:53,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:43:53,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 10:43:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390455302] [2024-11-09 10:43:53,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:43:53,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:43:53,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:43:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:43:53,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 133 [2024-11-09 10:43:53,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 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) [2024-11-09 10:43:53,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:53,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 133 [2024-11-09 10:43:53,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:43:53,723 INFO L124 PetriNetUnfolderBase]: 12/70 cut-off events. [2024-11-09 10:43:53,723 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-09 10:43:53,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 70 events. 12/70 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 203 event pairs, 6 based on Foata normal form. 6/61 useless extension candidates. Maximal degree in co-relation 145. Up to 26 conditions per place. [2024-11-09 10:43:53,723 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 16 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-09 10:43:53,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 144 flow [2024-11-09 10:43:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:43:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:43:53,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 283 transitions. [2024-11-09 10:43:53,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5319548872180451 [2024-11-09 10:43:53,724 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 326 flow. Second operand 4 states and 283 transitions. [2024-11-09 10:43:53,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 144 flow [2024-11-09 10:43:53,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 115 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-09 10:43:53,725 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 71 flow [2024-11-09 10:43:53,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=71, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-11-09 10:43:53,726 INFO L277 CegarLoopForPetriNet]: 119 programPoint places, -84 predicate places. [2024-11-09 10:43:53,726 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 71 flow [2024-11-09 10:43:53,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 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) [2024-11-09 10:43:53,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:53,727 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 10:43:53,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 10:43:53,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 10:43:53,932 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-11-09 10:43:53,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:53,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1597175266, now seen corresponding path program 1 times [2024-11-09 10:43:53,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:53,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396139419] [2024-11-09 10:43:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:53,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:43:53,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:43:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:43:53,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:43:53,983 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:43:53,984 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2024-11-09 10:43:53,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 65 remaining) [2024-11-09 10:43:53,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 65 remaining) [2024-11-09 10:43:53,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 65 remaining) [2024-11-09 10:43:53,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 65 remaining) [2024-11-09 10:43:53,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 65 remaining) [2024-11-09 10:43:53,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 65 remaining) [2024-11-09 10:43:53,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (49 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 65 remaining) [2024-11-09 10:43:53,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (36 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 65 remaining) [2024-11-09 10:43:53,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 65 remaining) [2024-11-09 10:43:53,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 65 remaining) [2024-11-09 10:43:53,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 65 remaining) [2024-11-09 10:43:53,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 65 remaining) [2024-11-09 10:43:53,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 65 remaining) [2024-11-09 10:43:53,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 65 remaining) [2024-11-09 10:43:53,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 65 remaining) [2024-11-09 10:43:53,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr14ASSERT_VIOLATIONMEMORY_LEAK (10 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 65 remaining) [2024-11-09 10:43:53,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 65 remaining) [2024-11-09 10:43:53,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 65 remaining) [2024-11-09 10:43:53,997 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 65 remaining) [2024-11-09 10:43:53,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:43:53,997 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:43:53,999 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:43:53,999 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:43:54,054 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-09 10:43:54,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 231 transitions, 506 flow [2024-11-09 10:43:54,117 INFO L124 PetriNetUnfolderBase]: 147/845 cut-off events. [2024-11-09 10:43:54,117 INFO L125 PetriNetUnfolderBase]: For 72/89 co-relation queries the response was YES. [2024-11-09 10:43:54,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 845 events. 147/845 cut-off events. For 72/89 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6031 event pairs, 1 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 533. Up to 32 conditions per place. [2024-11-09 10:43:54,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 231 transitions, 506 flow [2024-11-09 10:43:54,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 231 transitions, 506 flow [2024-11-09 10:43:54,132 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:43:54,133 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;@723c9d9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:43:54,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2024-11-09 10:43:54,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:43:54,134 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-09 10:43:54,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:43:54,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:43:54,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:43:54,134 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 87 more)] === [2024-11-09 10:43:54,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:43:54,134 INFO L85 PathProgramCache]: Analyzing trace with hash 26524, now seen corresponding path program 1 times [2024-11-09 10:43:54,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:43:54,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107347991] [2024-11-09 10:43:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:43:54,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:43:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:43:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:43:54,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:43:54,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107347991] [2024-11-09 10:43:54,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107347991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:43:54,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:43:54,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:43:54,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192445034] [2024-11-09 10:43:54,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:43:54,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:43:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:43:54,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:43:54,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:43:54,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 231 [2024-11-09 10:43:54,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 231 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:43:54,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:43:54,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 231 [2024-11-09 10:43:54,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand