./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:36:06,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:36:06,907 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:36:06,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:36:06,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:36:06,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:36:06,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:36:06,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:36:06,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:36:06,926 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:36:06,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:36:06,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:36:06,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:36:06,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:36:06,926 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:36:06,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:36:06,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:36:06,928 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:36:06,928 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:36:06,928 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:36:06,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:36:06,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:36:06,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:36:06,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:36:06,928 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:36:06,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:36:06,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:36:06,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:36:06,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:36:06,929 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2025-01-09 16:36:07,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:36:07,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:36:07,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:36:07,160 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:36:07,161 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:36:07,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-01-09 16:36:08,378 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ffa6f650/3ff3839c625346c390e747b12064b908/FLAG1223e46a9 [2025-01-09 16:36:08,706 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:36:08,706 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-01-09 16:36:08,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ffa6f650/3ff3839c625346c390e747b12064b908/FLAG1223e46a9 [2025-01-09 16:36:08,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ffa6f650/3ff3839c625346c390e747b12064b908 [2025-01-09 16:36:08,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:36:08,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:36:08,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:36:08,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:36:08,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:36:08,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:36:08" (1/1) ... [2025-01-09 16:36:08,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2498cf46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:08, skipping insertion in model container [2025-01-09 16:36:08,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:36:08" (1/1) ... [2025-01-09 16:36:09,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:36:09,275 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2025-01-09 16:36:09,281 WARN L1731 CHandler]: Possible shadowing of function new [2025-01-09 16:36:09,282 WARN L1731 CHandler]: Possible shadowing of function new [2025-01-09 16:36:09,282 WARN L1731 CHandler]: Possible shadowing of function new [2025-01-09 16:36:09,282 WARN L1731 CHandler]: Possible shadowing of function new [2025-01-09 16:36:09,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:36:09,332 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:36:09,379 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2025-01-09 16:36:09,382 WARN L1731 CHandler]: Possible shadowing of function new [2025-01-09 16:36:09,382 WARN L1731 CHandler]: Possible shadowing of function new [2025-01-09 16:36:09,382 WARN L1731 CHandler]: Possible shadowing of function new [2025-01-09 16:36:09,382 WARN L1731 CHandler]: Possible shadowing of function new [2025-01-09 16:36:09,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:36:09,440 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:36:09,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09 WrapperNode [2025-01-09 16:36:09,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:36:09,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:36:09,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:36:09,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:36:09,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,479 INFO L138 Inliner]: procedures = 280, calls = 142, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 354 [2025-01-09 16:36:09,480 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:36:09,480 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:36:09,480 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:36:09,480 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:36:09,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,510 INFO L175 MemorySlicer]: Split 105 memory accesses to 5 slices as follows [2, 5, 2, 94, 2]. 90 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 0, 70, 0]. The 15 writes are split as follows [0, 0, 1, 13, 1]. [2025-01-09 16:36:09,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,519 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:36:09,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:36:09,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:36:09,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:36:09,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (1/1) ... [2025-01-09 16:36:09,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:36:09,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:36:09,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:36:09,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:36:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 16:36:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 16:36:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 16:36:09,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-01-09 16:36:09,600 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-01-09 16:36:09,600 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:36:09,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 16:36:09,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:36:09,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:36:09,603 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:36:09,752 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:36:09,753 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:36:10,109 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:36:10,110 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:36:10,576 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:36:10,576 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2025-01-09 16:36:10,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:36:10 BoogieIcfgContainer [2025-01-09 16:36:10,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:36:10,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:36:10,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:36:10,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:36:10,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:36:08" (1/3) ... [2025-01-09 16:36:10,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308f7d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:36:10, skipping insertion in model container [2025-01-09 16:36:10,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:36:09" (2/3) ... [2025-01-09 16:36:10,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308f7d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:36:10, skipping insertion in model container [2025-01-09 16:36:10,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:36:10" (3/3) ... [2025-01-09 16:36:10,585 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2025-01-09 16:36:10,601 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:36:10,602 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_90-arrayloop2_racing.i that has 3 procedures, 82 locations, 1 initial locations, 20 loop locations, and 2 error locations. [2025-01-09 16:36:10,602 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:36:10,660 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-09 16:36:10,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 117 transitions, 254 flow [2025-01-09 16:36:10,793 INFO L124 PetriNetUnfolderBase]: 52/194 cut-off events. [2025-01-09 16:36:10,795 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-01-09 16:36:10,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 194 events. 52/194 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 818 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2025-01-09 16:36:10,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 117 transitions, 254 flow [2025-01-09 16:36:10,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 117 transitions, 254 flow [2025-01-09 16:36:10,806 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:36:10,813 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;@2e75fa35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:36:10,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-01-09 16:36:10,821 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:36:10,821 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2025-01-09 16:36:10,821 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:36:10,821 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:36:10,822 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-01-09 16:36:10,822 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-09 16:36:10,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:36:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1332198357, now seen corresponding path program 1 times [2025-01-09 16:36:10,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:36:10,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611709274] [2025-01-09 16:36:10,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:36:10,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:36:10,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 16:36:10,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 16:36:10,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:36:10,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:36:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:36:11,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:36:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611709274] [2025-01-09 16:36:11,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611709274] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:36:11,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:36:11,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:36:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680341906] [2025-01-09 16:36:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:36:11,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:36:11,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:36:11,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:36:11,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:36:11,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 117 [2025-01-09 16:36:11,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2025-01-09 16:36:11,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:36:11,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 117 [2025-01-09 16:36:11,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:36:12,530 INFO L124 PetriNetUnfolderBase]: 6551/12966 cut-off events. [2025-01-09 16:36:12,530 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2025-01-09 16:36:12,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22694 conditions, 12966 events. 6551/12966 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 105132 event pairs, 5490 based on Foata normal form. 2242/13221 useless extension candidates. Maximal degree in co-relation 21634. Up to 9600 conditions per place. [2025-01-09 16:36:12,587 INFO L140 encePairwiseOnDemand]: 92/117 looper letters, 64 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2025-01-09 16:36:12,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 98 transitions, 348 flow [2025-01-09 16:36:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:36:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:36:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2025-01-09 16:36:12,596 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5270655270655271 [2025-01-09 16:36:12,597 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 254 flow. Second operand 3 states and 185 transitions. [2025-01-09 16:36:12,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 98 transitions, 348 flow [2025-01-09 16:36:12,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 98 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 16:36:12,603 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 222 flow [2025-01-09 16:36:12,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2025-01-09 16:36:12,607 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2025-01-09 16:36:12,607 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 222 flow [2025-01-09 16:36:12,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2025-01-09 16:36:12,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:36:12,608 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:36:12,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:36:12,608 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-09 16:36:12,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:36:12,609 INFO L85 PathProgramCache]: Analyzing trace with hash 458652975, now seen corresponding path program 1 times [2025-01-09 16:36:12,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:36:12,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043656828] [2025-01-09 16:36:12,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:36:12,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:36:12,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 16:36:12,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 16:36:12,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:36:12,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:36:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:36:12,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:36:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043656828] [2025-01-09 16:36:12,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043656828] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:36:12,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:36:12,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:36:12,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070910839] [2025-01-09 16:36:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:36:12,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:36:12,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:36:12,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:36:12,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:36:12,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 117 [2025-01-09 16:36:12,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2025-01-09 16:36:12,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:36:12,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 117 [2025-01-09 16:36:12,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:36:13,531 INFO L124 PetriNetUnfolderBase]: 6551/12968 cut-off events. [2025-01-09 16:36:13,531 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2025-01-09 16:36:13,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22705 conditions, 12968 events. 6551/12968 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 105108 event pairs, 5490 based on Foata normal form. 2/10986 useless extension candidates. Maximal degree in co-relation 22686. Up to 9603 conditions per place. [2025-01-09 16:36:13,584 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 63 selfloop transitions, 2 changer transitions 0/97 dead transitions. [2025-01-09 16:36:13,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 97 transitions, 354 flow [2025-01-09 16:36:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:36:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:36:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2025-01-09 16:36:13,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4586894586894587 [2025-01-09 16:36:13,586 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 222 flow. Second operand 3 states and 161 transitions. [2025-01-09 16:36:13,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 97 transitions, 354 flow [2025-01-09 16:36:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 97 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:36:13,588 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 234 flow [2025-01-09 16:36:13,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2025-01-09 16:36:13,589 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2025-01-09 16:36:13,589 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 234 flow [2025-01-09 16:36:13,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2025-01-09 16:36:13,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:36:13,589 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:36:13,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:36:13,590 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-09 16:36:13,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:36:13,590 INFO L85 PathProgramCache]: Analyzing trace with hash 903114730, now seen corresponding path program 1 times [2025-01-09 16:36:13,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:36:13,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922809051] [2025-01-09 16:36:13,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:36:13,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:36:13,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 16:36:13,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 16:36:13,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:36:13,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:36:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:36:13,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:36:13,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922809051] [2025-01-09 16:36:13,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922809051] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:36:13,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650287081] [2025-01-09 16:36:13,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:36:13,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:36:13,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:36:13,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:36:13,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:36:13,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 16:36:13,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 16:36:13,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:36:13,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:36:13,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:36:13,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:36:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:36:13,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:36:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:36:13,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650287081] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:36:13,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:36:13,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-09 16:36:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105974313] [2025-01-09 16:36:13,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:36:13,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:36:13,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:36:13,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:36:13,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:36:13,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 117 [2025-01-09 16:36:13,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2025-01-09 16:36:13,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:36:13,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 117 [2025-01-09 16:36:13,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:36:15,228 INFO L124 PetriNetUnfolderBase]: 6551/12974 cut-off events. [2025-01-09 16:36:15,228 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2025-01-09 16:36:15,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22733 conditions, 12974 events. 6551/12974 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 105137 event pairs, 5490 based on Foata normal form. 6/10996 useless extension candidates. Maximal degree in co-relation 22693. Up to 9603 conditions per place. [2025-01-09 16:36:15,266 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 63 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2025-01-09 16:36:15,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 382 flow [2025-01-09 16:36:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:36:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:36:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 262 transitions. [2025-01-09 16:36:15,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3732193732193732 [2025-01-09 16:36:15,271 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 234 flow. Second operand 6 states and 262 transitions. [2025-01-09 16:36:15,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 382 flow [2025-01-09 16:36:15,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 378 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-09 16:36:15,275 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 272 flow [2025-01-09 16:36:15,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2025-01-09 16:36:15,276 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2025-01-09 16:36:15,277 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 272 flow [2025-01-09 16:36:15,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2025-01-09 16:36:15,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:36:15,277 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:36:15,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:36:15,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:36:15,478 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-09 16:36:15,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:36:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash -996486161, now seen corresponding path program 2 times [2025-01-09 16:36:15,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:36:15,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747772493] [2025-01-09 16:36:15,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:36:15,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:36:15,532 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-09 16:36:15,552 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 16:36:15,552 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:36:15,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:36:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 16:36:15,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:36:15,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747772493] [2025-01-09 16:36:15,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747772493] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:36:15,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425169210] [2025-01-09 16:36:15,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:36:15,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:36:15,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:36:15,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:36:15,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:36:15,780 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-09 16:36:15,850 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 16:36:15,851 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:36:15,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:36:15,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 16:36:15,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:36:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:36:15,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:36:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:36:15,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425169210] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:36:15,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:36:15,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-01-09 16:36:15,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089400072] [2025-01-09 16:36:15,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:36:15,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:36:15,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:36:15,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:36:15,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:36:15,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 117 [2025-01-09 16:36:15,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 272 flow. Second operand has 14 states, 14 states have (on average 33.57142857142857) internal successors, (470), 14 states have internal predecessors, (470), 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) [2025-01-09 16:36:15,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:36:15,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 117 [2025-01-09 16:36:15,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:36:17,769 INFO L124 PetriNetUnfolderBase]: 6552/12999 cut-off events. [2025-01-09 16:36:17,769 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2025-01-09 16:36:17,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22861 conditions, 12999 events. 6552/12999 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 105199 event pairs, 5490 based on Foata normal form. 19/11034 useless extension candidates. Maximal degree in co-relation 22689. Up to 9600 conditions per place. [2025-01-09 16:36:17,818 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 63 selfloop transitions, 36 changer transitions 0/131 dead transitions. [2025-01-09 16:36:17,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 131 transitions, 670 flow [2025-01-09 16:36:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-01-09 16:36:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-01-09 16:36:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1206 transitions. [2025-01-09 16:36:17,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3031674208144796 [2025-01-09 16:36:17,824 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 272 flow. Second operand 34 states and 1206 transitions. [2025-01-09 16:36:17,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 131 transitions, 670 flow [2025-01-09 16:36:17,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 628 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-01-09 16:36:17,829 INFO L231 Difference]: Finished difference. Result has 145 places, 131 transitions, 564 flow [2025-01-09 16:36:17,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=564, PETRI_PLACES=145, PETRI_TRANSITIONS=131} [2025-01-09 16:36:17,830 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 57 predicate places. [2025-01-09 16:36:17,830 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 131 transitions, 564 flow [2025-01-09 16:36:17,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 33.57142857142857) internal successors, (470), 14 states have internal predecessors, (470), 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) [2025-01-09 16:36:17,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:36:17,831 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-09 16:36:17,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 16:36:18,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:36:18,032 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-09 16:36:18,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:36:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1479772659, now seen corresponding path program 3 times [2025-01-09 16:36:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:36:18,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252576240] [2025-01-09 16:36:18,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:36:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:36:18,202 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-01-09 16:36:25,192 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 16:36:25,193 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-01-09 16:36:25,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:36:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-01-09 16:36:25,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:36:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252576240] [2025-01-09 16:36:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252576240] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:36:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355498125] [2025-01-09 16:36:25,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:36:25,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:36:25,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:36:25,810 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:36:25,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:36:26,185 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.