./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:24:11,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:24:11,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:24:11,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:24:11,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:24:11,287 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:24:11,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:24:11,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:24:11,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:24:11,292 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:24:11,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:24:11,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:24:11,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:24:11,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:24:11,295 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:24:11,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:24:11,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:24:11,296 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:24:11,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:24:11,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:24:11,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:24:11,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:24:11,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:24:11,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:24:11,302 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:24:11,302 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:24:11,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:24:11,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:24:11,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:24:11,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:24:11,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:24:11,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:24:11,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:24:11,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:24:11,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:24:11,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:24:11,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:24:11,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:24:11,305 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:24:11,305 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:24:11,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:24:11,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:24:11,307 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 [2024-10-11 14:24:11,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:24:11,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:24:11,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:24:11,623 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:24:11,624 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:24:11,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-10-11 14:24:13,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:24:13,281 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:24:13,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-10-11 14:24:13,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/de7d80be5/b332d148b73540e3b12cb6bcaf7ee259/FLAG642b89ed0 [2024-10-11 14:24:13,610 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/de7d80be5/b332d148b73540e3b12cb6bcaf7ee259 [2024-10-11 14:24:13,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:24:13,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:24:13,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:24:13,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:24:13,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:24:13,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:13" (1/1) ... [2024-10-11 14:24:13,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d595ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:13, skipping insertion in model container [2024-10-11 14:24:13,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:13" (1/1) ... [2024-10-11 14:24:13,669 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:24:14,099 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2024-10-11 14:24:14,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:24:14,238 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:24:14,272 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2024-10-11 14:24:14,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:24:14,345 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:24:14,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14 WrapperNode [2024-10-11 14:24:14,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:24:14,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:24:14,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:24:14,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:24:14,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,406 INFO L138 Inliner]: procedures = 279, calls = 69, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 260 [2024-10-11 14:24:14,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:24:14,407 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:24:14,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:24:14,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:24:14,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,450 INFO L175 MemorySlicer]: Split 35 memory accesses to 8 slices as follows [2, 14, 2, 5, 4, 5, 1, 2]. 40 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 0, 5, 0, 5, 0, 0]. The 13 writes are split as follows [0, 8, 1, 0, 2, 0, 1, 1]. [2024-10-11 14:24:14,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,484 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:24:14,485 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:24:14,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:24:14,485 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:24:14,486 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (1/1) ... [2024-10-11 14:24:14,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:24:14,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:24:14,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:24:14,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:24:14,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 14:24:14,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 14:24:14,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 14:24:14,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 14:24:14,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-11 14:24:14,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-11 14:24:14,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-11 14:24:14,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-10-11 14:24:14,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-10-11 14:24:14,591 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-10-11 14:24:14,591 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-10-11 14:24:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 14:24:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 14:24:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:24:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:24:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 14:24:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 14:24:14,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-10-11 14:24:14,594 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-11 14:24:14,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-11 14:24:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 14:24:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:24:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:24:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 14:24:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 14:24:14,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 14:24:14,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-11 14:24:14,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-11 14:24:14,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-11 14:24:14,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-10-11 14:24:14,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-10-11 14:24:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:24:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:24:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 14:24:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 14:24:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 14:24:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 14:24:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-11 14:24:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-11 14:24:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:24:14,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:24:14,601 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:24:14,848 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:24:14,851 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:24:15,311 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:24:15,311 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:24:15,598 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:24:15,599 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-11 14:24:15,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:15 BoogieIcfgContainer [2024-10-11 14:24:15,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:24:15,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:24:15,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:24:15,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:24:15,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:13" (1/3) ... [2024-10-11 14:24:15,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a14567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:15, skipping insertion in model container [2024-10-11 14:24:15,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:14" (2/3) ... [2024-10-11 14:24:15,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a14567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:15, skipping insertion in model container [2024-10-11 14:24:15,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:15" (3/3) ... [2024-10-11 14:24:15,610 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2024-10-11 14:24:15,629 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:24:15,630 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:24:15,630 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:24:15,711 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 14:24:15,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 77 transitions, 174 flow [2024-10-11 14:24:15,818 INFO L124 PetriNetUnfolderBase]: 37/157 cut-off events. [2024-10-11 14:24:15,819 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 14:24:15,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 157 events. 37/157 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 560 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 80. Up to 8 conditions per place. [2024-10-11 14:24:15,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 77 transitions, 174 flow [2024-10-11 14:24:15,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 75 transitions, 164 flow [2024-10-11 14:24:15,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:24:15,896 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=LoopHeads, 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;@6875f766, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:24:15,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:24:15,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:24:15,920 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2024-10-11 14:24:15,920 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:24:15,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:24:15,921 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-11 14:24:15,922 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:24:15,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:24:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash -603403961, now seen corresponding path program 1 times [2024-10-11 14:24:15,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:24:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629981274] [2024-10-11 14:24:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:24:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:24:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:24:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:24:16,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:24:16,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629981274] [2024-10-11 14:24:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629981274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:24:16,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:24:16,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:24:16,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291223182] [2024-10-11 14:24:16,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:24:16,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:24:16,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:24:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:24:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:24:16,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-11 14:24:16,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-11 14:24:16,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:24:16,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-11 14:24:16,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:24:17,198 INFO L124 PetriNetUnfolderBase]: 2345/4509 cut-off events. [2024-10-11 14:24:17,199 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-10-11 14:24:17,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8331 conditions, 4509 events. 2345/4509 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27466 event pairs, 2178 based on Foata normal form. 406/4207 useless extension candidates. Maximal degree in co-relation 7099. Up to 3752 conditions per place. [2024-10-11 14:24:17,224 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 47 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-10-11 14:24:17,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 240 flow [2024-10-11 14:24:17,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:24:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:24:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-10-11 14:24:17,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-10-11 14:24:17,238 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 164 flow. Second operand 3 states and 107 transitions. [2024-10-11 14:24:17,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 240 flow [2024-10-11 14:24:17,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:24:17,246 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 152 flow [2024-10-11 14:24:17,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-10-11 14:24:17,254 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2024-10-11 14:24:17,254 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 152 flow [2024-10-11 14:24:17,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-10-11 14:24:17,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:24:17,255 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-11 14:24:17,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:24:17,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:24:17,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:24:17,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2048684355, now seen corresponding path program 1 times [2024-10-11 14:24:17,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:24:17,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052663490] [2024-10-11 14:24:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:24:17,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:24:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:24:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:24:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:24:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052663490] [2024-10-11 14:24:17,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052663490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:24:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015185222] [2024-10-11 14:24:17,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:24:17,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:24:17,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:24:17,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:24:17,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:24:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:24:17,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 14:24:17,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:24:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:24:17,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:24:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:24:17,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015185222] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:24:17,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:24:17,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-11 14:24:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317745522] [2024-10-11 14:24:17,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:24:17,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:24:17,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:24:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:24:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:24:17,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-11 14:24:17,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-10-11 14:24:17,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:24:17,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-11 14:24:17,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:24:18,412 INFO L124 PetriNetUnfolderBase]: 2345/4512 cut-off events. [2024-10-11 14:24:18,412 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-10-11 14:24:18,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8347 conditions, 4512 events. 2345/4512 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27467 event pairs, 2178 based on Foata normal form. 0/3804 useless extension candidates. Maximal degree in co-relation 8334. Up to 3752 conditions per place. [2024-10-11 14:24:18,432 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-10-11 14:24:18,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 268 flow [2024-10-11 14:24:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:24:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:24:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-11 14:24:18,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31385281385281383 [2024-10-11 14:24:18,436 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 152 flow. Second operand 6 states and 145 transitions. [2024-10-11 14:24:18,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 268 flow [2024-10-11 14:24:18,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 264 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:24:18,441 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 184 flow [2024-10-11 14:24:18,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-10-11 14:24:18,442 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2024-10-11 14:24:18,442 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 184 flow [2024-10-11 14:24:18,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2024-10-11 14:24:18,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:24:18,443 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-10-11 14:24:18,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:24:18,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:24:18,645 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:24:18,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:24:18,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1750013881, now seen corresponding path program 2 times [2024-10-11 14:24:18,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:24:18,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845632973] [2024-10-11 14:24:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:24:18,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:24:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:24:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:24:18,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:24:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845632973] [2024-10-11 14:24:18,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845632973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:24:18,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849340694] [2024-10-11 14:24:18,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:24:18,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:24:18,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:24:18,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:24:18,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:24:19,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:24:19,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:24:19,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:24:19,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:24:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:24:19,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:24:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:24:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849340694] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:24:19,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:24:19,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-11 14:24:19,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629226354] [2024-10-11 14:24:19,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:24:19,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:24:19,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:24:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:24:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:24:19,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-11 14:24:19,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 184 flow. Second operand has 12 states, 12 states have (on average 16.25) internal successors, (195), 12 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) [2024-10-11 14:24:19,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:24:19,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-11 14:24:19,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:24:19,887 INFO L124 PetriNetUnfolderBase]: 2345/4518 cut-off events. [2024-10-11 14:24:19,887 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-10-11 14:24:19,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 4518 events. 2345/4518 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27479 event pairs, 2178 based on Foata normal form. 6/3817 useless extension candidates. Maximal degree in co-relation 8325. Up to 3752 conditions per place. [2024-10-11 14:24:19,908 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-10-11 14:24:19,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 336 flow [2024-10-11 14:24:19,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:24:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:24:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2024-10-11 14:24:19,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26406926406926406 [2024-10-11 14:24:19,911 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 184 flow. Second operand 12 states and 244 transitions. [2024-10-11 14:24:19,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 336 flow [2024-10-11 14:24:19,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 322 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 14:24:19,919 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 254 flow [2024-10-11 14:24:19,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=254, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-10-11 14:24:19,920 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2024-10-11 14:24:19,920 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 254 flow [2024-10-11 14:24:19,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.25) internal successors, (195), 12 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) [2024-10-11 14:24:19,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:24:19,921 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-10-11 14:24:19,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 14:24:20,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:24:20,122 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:24:20,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:24:20,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1332676295, now seen corresponding path program 3 times [2024-10-11 14:24:20,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:24:20,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930996450] [2024-10-11 14:24:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:24:20,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:24:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:24:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:24:20,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:24:20,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930996450] [2024-10-11 14:24:20,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930996450] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:24:20,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807504956] [2024-10-11 14:24:20,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:24:20,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:24:20,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:24:20,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:24:20,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:25:39,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-11 14:25:39,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:25:39,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 14:25:39,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:25:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:25:39,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:25:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:25:39,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807504956] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:25:39,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:25:39,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-10-11 14:25:39,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348709035] [2024-10-11 14:25:39,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:25:39,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 14:25:39,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:25:39,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 14:25:39,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2024-10-11 14:25:39,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-11 14:25:39,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 254 flow. Second operand has 24 states, 24 states have (on average 16.125) internal successors, (387), 24 states have internal predecessors, (387), 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) [2024-10-11 14:25:39,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:25:39,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-11 14:25:39,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:40,360 INFO L124 PetriNetUnfolderBase]: 2345/4530 cut-off events. [2024-10-11 14:25:40,360 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-10-11 14:25:40,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 4530 events. 2345/4530 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27459 event pairs, 2178 based on Foata normal form. 12/3835 useless extension candidates. Maximal degree in co-relation 8331. Up to 3752 conditions per place. [2024-10-11 14:25:40,382 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 23 changer transitions 0/85 dead transitions. [2024-10-11 14:25:40,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 85 transitions, 490 flow [2024-10-11 14:25:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 14:25:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 14:25:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 442 transitions. [2024-10-11 14:25:40,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23917748917748918 [2024-10-11 14:25:40,386 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 254 flow. Second operand 24 states and 442 transitions. [2024-10-11 14:25:40,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 85 transitions, 490 flow [2024-10-11 14:25:40,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 85 transitions, 418 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-10-11 14:25:40,391 INFO L231 Difference]: Finished difference. Result has 119 places, 85 transitions, 374 flow [2024-10-11 14:25:40,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=374, PETRI_PLACES=119, PETRI_TRANSITIONS=85} [2024-10-11 14:25:40,392 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 56 predicate places. [2024-10-11 14:25:40,392 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 85 transitions, 374 flow [2024-10-11 14:25:40,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.125) internal successors, (387), 24 states have internal predecessors, (387), 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) [2024-10-11 14:25:40,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:25:40,393 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2024-10-11 14:25:40,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:25:40,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:25:40,594 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:25:40,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:25:40,595 INFO L85 PathProgramCache]: Analyzing trace with hash -708795449, now seen corresponding path program 4 times [2024-10-11 14:25:40,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:25:40,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873503657] [2024-10-11 14:25:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:25:40,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:25:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:25:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:25:41,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:25:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873503657] [2024-10-11 14:25:41,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873503657] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:25:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432389621] [2024-10-11 14:25:41,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:25:41,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:25:41,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:25:41,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:25:41,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:25:42,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:25:42,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:25:42,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 14:25:42,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:25:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:25:42,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:25:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:25:42,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432389621] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:25:42,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:25:42,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-10-11 14:25:42,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959635972] [2024-10-11 14:25:42,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:25:42,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-11 14:25:42,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:25:42,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-11 14:25:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-10-11 14:25:42,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 77 [2024-10-11 14:25:42,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 85 transitions, 374 flow. Second operand has 48 states, 48 states have (on average 16.0625) internal successors, (771), 48 states have internal predecessors, (771), 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) [2024-10-11 14:25:42,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:25:42,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 77 [2024-10-11 14:25:42,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:25:43,765 INFO L124 PetriNetUnfolderBase]: 2345/4554 cut-off events. [2024-10-11 14:25:43,765 INFO L125 PetriNetUnfolderBase]: For 5368/5368 co-relation queries the response was YES. [2024-10-11 14:25:43,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8612 conditions, 4554 events. 2345/4554 cut-off events. For 5368/5368 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 27459 event pairs, 2178 based on Foata normal form. 24/3871 useless extension candidates. Maximal degree in co-relation 8343. Up to 3752 conditions per place. [2024-10-11 14:25:43,793 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 47 selfloop transitions, 47 changer transitions 0/109 dead transitions. [2024-10-11 14:25:43,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 109 transitions, 754 flow [2024-10-11 14:25:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-11 14:25:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-10-11 14:25:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 838 transitions. [2024-10-11 14:25:43,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.22673160173160173 [2024-10-11 14:25:43,797 INFO L175 Difference]: Start difference. First operand has 119 places, 85 transitions, 374 flow. Second operand 48 states and 838 transitions. [2024-10-11 14:25:43,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 109 transitions, 754 flow [2024-10-11 14:25:43,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 109 transitions, 610 flow, removed 61 selfloop flow, removed 11 redundant places. [2024-10-11 14:25:43,805 INFO L231 Difference]: Finished difference. Result has 179 places, 109 transitions, 614 flow [2024-10-11 14:25:43,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=614, PETRI_PLACES=179, PETRI_TRANSITIONS=109} [2024-10-11 14:25:43,806 INFO L277 CegarLoopForPetriNet]: 63 programPoint places, 116 predicate places. [2024-10-11 14:25:43,806 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 109 transitions, 614 flow [2024-10-11 14:25:43,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 16.0625) internal successors, (771), 48 states have internal predecessors, (771), 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) [2024-10-11 14:25:43,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:25:43,807 INFO L204 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2024-10-11 14:25:43,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:25:44,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:25:44,008 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:25:44,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:25:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1209621959, now seen corresponding path program 5 times [2024-10-11 14:25:44,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:25:44,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929023241] [2024-10-11 14:25:44,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:25:44,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:25:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:25:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:25:47,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:25:47,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929023241] [2024-10-11 14:25:47,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929023241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:25:47,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932814998] [2024-10-11 14:25:47,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:25:47,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:25:47,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:25:47,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:25:47,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process