./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:29:58,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:29:59,009 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:29:59,015 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:29:59,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:29:59,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:29:59,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:29:59,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:29:59,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:29:59,049 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:29:59,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:29:59,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:29:59,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:29:59,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:29:59,052 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:29:59,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:29:59,053 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:29:59,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:29:59,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:29:59,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:29:59,054 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:29:59,058 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:29:59,059 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:29:59,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:29:59,059 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:29:59,059 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:29:59,060 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:29:59,060 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:29:59,060 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:29:59,060 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:29:59,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:29:59,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:29:59,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:29:59,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:29:59,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:29:59,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:29:59,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:29:59,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:29:59,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:29:59,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:29:59,063 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:29:59,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:29:59,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 [2024-11-17 03:29:59,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:29:59,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:29:59,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:29:59,367 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:29:59,368 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:29:59,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-11-17 03:30:00,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:30:01,153 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:30:01,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-11-17 03:30:01,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f05a421/b13527c52c8149b191f24ec75eb496ec/FLAGb8bd404fa [2024-11-17 03:30:01,464 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11f05a421/b13527c52c8149b191f24ec75eb496ec [2024-11-17 03:30:01,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:30:01,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:30:01,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:01,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:30:01,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:30:01,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:01" (1/1) ... [2024-11-17 03:30:01,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@167da5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:01, skipping insertion in model container [2024-11-17 03:30:01,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:30:01" (1/1) ... [2024-11-17 03:30:01,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:30:02,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:02,393 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:30:02,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:30:02,589 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:30:02,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02 WrapperNode [2024-11-17 03:30:02,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:30:02,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:30:02,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:30:02,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:30:02,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,752 INFO L138 Inliner]: procedures = 280, calls = 1606, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1785 [2024-11-17 03:30:02,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:30:02,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:30:02,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:30:02,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:30:02,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,786 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,845 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 5, 14, 259, 5, 1280, 2, 2]. 82 percent of accesses are in the largest equivalence class. The 1548 initializations are split as follows [2, 5, 0, 256, 5, 1280, 0, 0]. The 11 writes are split as follows [0, 0, 8, 1, 0, 0, 1, 1]. [2024-11-17 03:30:02,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,919 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:30:02,967 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:30:02,967 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:30:02,967 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:30:02,968 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (1/1) ... [2024-11-17 03:30:02,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:30:02,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:30:03,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:30:03,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:30:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:30:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 03:30:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 03:30:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 03:30:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-17 03:30:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-17 03:30:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-17 03:30:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-17 03:30:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-17 03:30:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-11-17 03:30:03,055 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-11-17 03:30:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:30:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 03:30:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-17 03:30:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-17 03:30:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-17 03:30:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-17 03:30:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-17 03:30:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-17 03:30:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-17 03:30:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:30:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:30:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:30:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:30:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:30:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 03:30:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-17 03:30:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-17 03:30:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-17 03:30:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-17 03:30:03,059 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-17 03:30:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:30:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:30:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:30:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:30:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 03:30:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-17 03:30:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-17 03:30:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-17 03:30:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:30:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:30:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:30:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 03:30:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 03:30:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 03:30:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-17 03:30:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-17 03:30:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-17 03:30:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-17 03:30:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-17 03:30:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:30:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:30:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:30:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:30:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 03:30:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-17 03:30:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-17 03:30:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-17 03:30:03,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:30:03,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:30:03,066 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:30:03,292 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:30:03,294 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:30:05,309 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1053: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2024-11-17 03:30:05,309 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1053-1: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2024-11-17 03:30:05,309 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1054: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2024-11-17 03:30:05,309 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1054-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2024-11-17 03:30:05,312 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:30:05,312 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:30:48,527 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:30:48,527 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:30:48,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:30:48 BoogieIcfgContainer [2024-11-17 03:30:48,528 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:30:48,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:30:48,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:30:48,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:30:48,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:30:01" (1/3) ... [2024-11-17 03:30:48,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b14baaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:30:48, skipping insertion in model container [2024-11-17 03:30:48,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:30:02" (2/3) ... [2024-11-17 03:30:48,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b14baaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:30:48, skipping insertion in model container [2024-11-17 03:30:48,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:30:48" (3/3) ... [2024-11-17 03:30:48,536 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2024-11-17 03:30:48,554 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:30:48,554 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-17 03:30:48,554 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:30:48,717 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-17 03:30:48,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 163 transitions, 346 flow [2024-11-17 03:30:48,956 INFO L124 PetriNetUnfolderBase]: 54/339 cut-off events. [2024-11-17 03:30:48,957 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-17 03:30:48,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 339 events. 54/339 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1780 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2024-11-17 03:30:48,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 163 transitions, 346 flow [2024-11-17 03:30:48,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 163 transitions, 346 flow [2024-11-17 03:30:48,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:30:49,004 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;@29790394, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:30:49,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-17 03:30:49,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:30:49,063 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:30:49,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:30:49,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:49,064 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:30:49,065 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-17 03:30:49,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash 116818355, now seen corresponding path program 1 times [2024-11-17 03:30:49,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:49,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859998497] [2024-11-17 03:30:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:49,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:50,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859998497] [2024-11-17 03:30:50,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859998497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:50,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:50,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:50,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633923089] [2024-11-17 03:30:50,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:50,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:50,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:50,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 163 [2024-11-17 03:30:50,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 163 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:30:50,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:50,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 163 [2024-11-17 03:30:50,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:51,896 INFO L124 PetriNetUnfolderBase]: 3268/7777 cut-off events. [2024-11-17 03:30:51,896 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-17 03:30:51,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13069 conditions, 7777 events. 3268/7777 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 67419 event pairs, 3059 based on Foata normal form. 1600/8532 useless extension candidates. Maximal degree in co-relation 11529. Up to 5189 conditions per place. [2024-11-17 03:30:51,958 INFO L140 encePairwiseOnDemand]: 141/163 looper letters, 57 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-11-17 03:30:51,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 142 transitions, 422 flow [2024-11-17 03:30:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2024-11-17 03:30:51,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707566462167689 [2024-11-17 03:30:51,977 INFO L175 Difference]: Start difference. First operand has 143 places, 163 transitions, 346 flow. Second operand 3 states and 328 transitions. [2024-11-17 03:30:51,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 142 transitions, 422 flow [2024-11-17 03:30:51,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 142 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:30:51,991 INFO L231 Difference]: Finished difference. Result has 142 places, 142 transitions, 308 flow [2024-11-17 03:30:51,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=142, PETRI_TRANSITIONS=142} [2024-11-17 03:30:51,998 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, -1 predicate places. [2024-11-17 03:30:51,998 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 142 transitions, 308 flow [2024-11-17 03:30:51,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:30:51,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:51,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:30:51,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:30:52,000 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-17 03:30:52,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash 116818356, now seen corresponding path program 1 times [2024-11-17 03:30:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142628379] [2024-11-17 03:30:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:52,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142628379] [2024-11-17 03:30:53,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142628379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:53,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:53,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:53,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377301086] [2024-11-17 03:30:53,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:53,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:30:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:53,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:30:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:30:53,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 163 [2024-11-17 03:30:53,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 142 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:30:53,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:53,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 163 [2024-11-17 03:30:53,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:54,211 INFO L124 PetriNetUnfolderBase]: 3268/7775 cut-off events. [2024-11-17 03:30:54,212 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-11-17 03:30:54,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13069 conditions, 7775 events. 3268/7775 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 67463 event pairs, 3059 based on Foata normal form. 2/6932 useless extension candidates. Maximal degree in co-relation 13053. Up to 5189 conditions per place. [2024-11-17 03:30:54,276 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 56 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2024-11-17 03:30:54,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 140 transitions, 420 flow [2024-11-17 03:30:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2024-11-17 03:30:54,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6380368098159509 [2024-11-17 03:30:54,282 INFO L175 Difference]: Start difference. First operand has 142 places, 142 transitions, 308 flow. Second operand 3 states and 312 transitions. [2024-11-17 03:30:54,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 140 transitions, 420 flow [2024-11-17 03:30:54,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 140 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:54,289 INFO L231 Difference]: Finished difference. Result has 140 places, 140 transitions, 304 flow [2024-11-17 03:30:54,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=140, PETRI_TRANSITIONS=140} [2024-11-17 03:30:54,290 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, -3 predicate places. [2024-11-17 03:30:54,291 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 140 transitions, 304 flow [2024-11-17 03:30:54,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:30:54,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:54,291 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:30:54,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:30:54,292 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-17 03:30:54,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash 593407266, now seen corresponding path program 1 times [2024-11-17 03:30:54,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922667988] [2024-11-17 03:30:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:54,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:54,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922667988] [2024-11-17 03:30:54,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922667988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:54,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:54,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:30:54,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816560339] [2024-11-17 03:30:54,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:54,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:30:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:30:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:30:55,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2024-11-17 03:30:55,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 140 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:30:55,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:55,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2024-11-17 03:30:55,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:56,329 INFO L124 PetriNetUnfolderBase]: 4064/9587 cut-off events. [2024-11-17 03:30:56,330 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-17 03:30:56,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16336 conditions, 9587 events. 4064/9587 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 85445 event pairs, 2177 based on Foata normal form. 0/8615 useless extension candidates. Maximal degree in co-relation 16320. Up to 3708 conditions per place. [2024-11-17 03:30:56,408 INFO L140 encePairwiseOnDemand]: 156/163 looper letters, 130 selfloop transitions, 4 changer transitions 0/212 dead transitions. [2024-11-17 03:30:56,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 212 transitions, 716 flow [2024-11-17 03:30:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:30:56,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:30:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 467 transitions. [2024-11-17 03:30:56,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7162576687116564 [2024-11-17 03:30:56,411 INFO L175 Difference]: Start difference. First operand has 140 places, 140 transitions, 304 flow. Second operand 4 states and 467 transitions. [2024-11-17 03:30:56,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 212 transitions, 716 flow [2024-11-17 03:30:56,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 212 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:30:56,422 INFO L231 Difference]: Finished difference. Result has 143 places, 141 transitions, 330 flow [2024-11-17 03:30:56,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=143, PETRI_TRANSITIONS=141} [2024-11-17 03:30:56,423 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, 0 predicate places. [2024-11-17 03:30:56,424 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 141 transitions, 330 flow [2024-11-17 03:30:56,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:30:56,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:56,425 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 03:30:56,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:30:56,425 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-17 03:30:56,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash 593407267, now seen corresponding path program 1 times [2024-11-17 03:30:56,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:56,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963483210] [2024-11-17 03:30:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:57,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:57,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963483210] [2024-11-17 03:30:57,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963483210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:30:57,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:30:57,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:30:57,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620302181] [2024-11-17 03:30:57,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:30:57,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:30:57,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:30:57,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:30:57,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:30:57,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 163 [2024-11-17 03:30:57,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 141 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:30:57,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:30:57,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 163 [2024-11-17 03:30:57,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:30:58,652 INFO L124 PetriNetUnfolderBase]: 4084/9982 cut-off events. [2024-11-17 03:30:58,653 INFO L125 PetriNetUnfolderBase]: For 1613/1640 co-relation queries the response was YES. [2024-11-17 03:30:58,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17870 conditions, 9982 events. 4084/9982 cut-off events. For 1613/1640 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 91135 event pairs, 3767 based on Foata normal form. 0/8949 useless extension candidates. Maximal degree in co-relation 16013. Up to 6646 conditions per place. [2024-11-17 03:30:58,736 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 65 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2024-11-17 03:30:58,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 144 transitions, 470 flow [2024-11-17 03:30:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:30:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:30:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2024-11-17 03:30:58,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6339468302658486 [2024-11-17 03:30:58,738 INFO L175 Difference]: Start difference. First operand has 143 places, 141 transitions, 330 flow. Second operand 3 states and 310 transitions. [2024-11-17 03:30:58,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 144 transitions, 470 flow [2024-11-17 03:30:58,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 144 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:30:58,751 INFO L231 Difference]: Finished difference. Result has 145 places, 142 transitions, 342 flow [2024-11-17 03:30:58,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2024-11-17 03:30:58,754 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, 2 predicate places. [2024-11-17 03:30:58,754 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 342 flow [2024-11-17 03:30:58,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:30:58,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:30:58,755 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2024-11-17 03:30:58,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:30:58,755 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-17 03:30:58,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:30:58,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1862893357, now seen corresponding path program 1 times [2024-11-17 03:30:58,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:30:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332567454] [2024-11-17 03:30:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:58,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:30:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:30:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:30:59,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:30:59,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332567454] [2024-11-17 03:30:59,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332567454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:30:59,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111204102] [2024-11-17 03:30:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:30:59,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:31:00,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:31:00,002 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:31:00,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:31:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:31:00,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 03:31:00,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:31:00,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 03:31:00,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 03:31:00,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 03:31:00,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 03:31:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:00,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:31:01,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:31:01,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-17 03:31:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:01,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111204102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:31:01,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:31:01,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-17 03:31:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761236884] [2024-11-17 03:31:01,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:31:01,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 03:31:01,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:31:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 03:31:01,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-17 03:31:02,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 163 [2024-11-17 03:31:02,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 342 flow. Second operand has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:31:02,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:31:02,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 163 [2024-11-17 03:31:02,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:31:03,901 INFO L124 PetriNetUnfolderBase]: 4086/10001 cut-off events. [2024-11-17 03:31:03,901 INFO L125 PetriNetUnfolderBase]: For 1079/1106 co-relation queries the response was YES. [2024-11-17 03:31:03,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17914 conditions, 10001 events. 4086/10001 cut-off events. For 1079/1106 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 91275 event pairs, 3767 based on Foata normal form. 1/8970 useless extension candidates. Maximal degree in co-relation 17891. Up to 6648 conditions per place. [2024-11-17 03:31:03,970 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 72 selfloop transitions, 8 changer transitions 0/157 dead transitions. [2024-11-17 03:31:03,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 157 transitions, 542 flow [2024-11-17 03:31:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:31:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:31:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 649 transitions. [2024-11-17 03:31:03,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5687992988606485 [2024-11-17 03:31:03,973 INFO L175 Difference]: Start difference. First operand has 145 places, 142 transitions, 342 flow. Second operand 7 states and 649 transitions. [2024-11-17 03:31:03,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 157 transitions, 542 flow [2024-11-17 03:31:03,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:31:03,980 INFO L231 Difference]: Finished difference. Result has 154 places, 148 transitions, 398 flow [2024-11-17 03:31:03,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=154, PETRI_TRANSITIONS=148} [2024-11-17 03:31:03,981 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, 11 predicate places. [2024-11-17 03:31:03,981 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 148 transitions, 398 flow [2024-11-17 03:31:03,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:31:03,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:31:03,982 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:31:04,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:31:04,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:31:04,184 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-17 03:31:04,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:31:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1330986923, now seen corresponding path program 1 times [2024-11-17 03:31:04,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:31:04,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531975576] [2024-11-17 03:31:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:31:04,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:31:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:31:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 03:31:04,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:31:04,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531975576] [2024-11-17 03:31:04,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531975576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:31:04,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:31:04,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:31:04,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424071729] [2024-11-17 03:31:04,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:31:04,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:31:04,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:31:04,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:31:04,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:31:04,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2024-11-17 03:31:04,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 148 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:31:04,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:31:04,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2024-11-17 03:31:04,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:31:05,621 INFO L124 PetriNetUnfolderBase]: 4444/10563 cut-off events. [2024-11-17 03:31:05,622 INFO L125 PetriNetUnfolderBase]: For 925/952 co-relation queries the response was YES. [2024-11-17 03:31:05,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19026 conditions, 10563 events. 4444/10563 cut-off events. For 925/952 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 96916 event pairs, 2895 based on Foata normal form. 0/9571 useless extension candidates. Maximal degree in co-relation 18967. Up to 4462 conditions per place. [2024-11-17 03:31:05,692 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 101 selfloop transitions, 4 changer transitions 0/182 dead transitions. [2024-11-17 03:31:05,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 182 transitions, 680 flow [2024-11-17 03:31:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:31:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:31:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2024-11-17 03:31:05,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034764826175869 [2024-11-17 03:31:05,694 INFO L175 Difference]: Start difference. First operand has 154 places, 148 transitions, 398 flow. Second operand 3 states and 344 transitions. [2024-11-17 03:31:05,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 182 transitions, 680 flow [2024-11-17 03:31:05,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 182 transitions, 676 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 03:31:05,701 INFO L231 Difference]: Finished difference. Result has 153 places, 146 transitions, 398 flow [2024-11-17 03:31:05,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=153, PETRI_TRANSITIONS=146} [2024-11-17 03:31:05,704 INFO L277 CegarLoopForPetriNet]: 143 programPoint places, 10 predicate places. [2024-11-17 03:31:05,704 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 146 transitions, 398 flow [2024-11-17 03:31:05,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:31:05,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:31:05,705 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:31:05,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:31:05,705 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2024-11-17 03:31:05,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:31:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1330986924, now seen corresponding path program 1 times [2024-11-17 03:31:05,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:31:05,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011553480] [2024-11-17 03:31:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:31:05,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:31:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:31:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:31:06,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:31:06,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011553480] [2024-11-17 03:31:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011553480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:31:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292647632] [2024-11-17 03:31:06,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:31:06,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:31:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:31:06,032 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) [2024-11-17 03:31:06,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process