./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 c00e63dc 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-?-c00e63d-m [2025-02-06 04:31:08,051 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:31:08,109 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:31:08,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:31:08,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:31:08,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:31:08,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:31:08,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:31:08,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:31:08,147 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:31:08,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:31:08,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:31:08,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:31:08,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:31:08,152 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:31:08,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:31:08,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:31:08,152 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:31:08,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:31:08,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:31:08,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:31:08,153 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:31:08,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:31:08,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:31:08,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:31:08,154 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:31:08,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:31:08,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:31:08,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:31:08,154 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 [2025-02-06 04:31:08,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:31:08,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:31:08,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:31:08,438 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:31:08,439 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:31:08,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-02-06 04:31:09,707 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/629ddd268/408677a2c4c54659ba56f27cfeb50afc/FLAGfbed2ed22 [2025-02-06 04:31:10,084 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:31:10,085 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2025-02-06 04:31:10,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/629ddd268/408677a2c4c54659ba56f27cfeb50afc/FLAGfbed2ed22 [2025-02-06 04:31:10,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/629ddd268/408677a2c4c54659ba56f27cfeb50afc [2025-02-06 04:31:10,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:31:10,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:31:10,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:31:10,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:31:10,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:31:10,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ffd701d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10, skipping insertion in model container [2025-02-06 04:31:10,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:31:10,596 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] [2025-02-06 04:31:10,604 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:10,605 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:10,605 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:10,605 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:10,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:31:10,645 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:31:10,688 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] [2025-02-06 04:31:10,690 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:10,691 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:10,691 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:10,691 WARN L1731 CHandler]: Possible shadowing of function new [2025-02-06 04:31:10,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:31:10,751 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:31:10,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10 WrapperNode [2025-02-06 04:31:10,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:31:10,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:31:10,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:31:10,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:31:10,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,790 INFO L138 Inliner]: procedures = 280, calls = 142, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 354 [2025-02-06 04:31:10,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:31:10,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:31:10,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:31:10,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:31:10,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,801 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,814 INFO L175 MemorySlicer]: Split 105 memory accesses to 5 slices as follows [94, 2, 5, 2, 2]. 90 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [70, 2, 5, 0, 0]. The 15 writes are split as follows [13, 0, 0, 1, 1]. [2025-02-06 04:31:10,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,831 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:31:10,847 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:31:10,847 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:31:10,847 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:31:10,851 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (1/1) ... [2025-02-06 04:31:10,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:31:10,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:10,877 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) [2025-02-06 04:31:10,880 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 [2025-02-06 04:31:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 04:31:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 04:31:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 04:31:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 04:31:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-06 04:31:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-06 04:31:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-02-06 04:31:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-02-06 04:31:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 04:31:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 04:31:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 04:31:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 04:31:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-06 04:31:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-06 04:31:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 04:31:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:31:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:31:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 04:31:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 04:31:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-06 04:31:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-02-06 04:31:10,901 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-02-06 04:31:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 04:31:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:31:10,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:31:10,904 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:31:11,060 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:31:11,062 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:31:11,520 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082: havoc main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset; [2025-02-06 04:31:11,521 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-1: SUMMARY for call ULTIMATE.dealloc(main_~#t2_ids~0#1.base, main_~#t2_ids~0#1.offset); srcloc: null [2025-02-06 04:31:11,521 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-2: havoc main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset; [2025-02-06 04:31:11,521 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1082-3: SUMMARY for call ULTIMATE.dealloc(main_~#t1_ids~0#1.base, main_~#t1_ids~0#1.offset); srcloc: null [2025-02-06 04:31:11,522 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:31:11,522 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:31:11,931 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:31:11,931 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:31:11,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:31:11 BoogieIcfgContainer [2025-02-06 04:31:11,932 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:31:11,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:31:11,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:31:11,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:31:11,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:31:10" (1/3) ... [2025-02-06 04:31:11,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c94c2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:31:11, skipping insertion in model container [2025-02-06 04:31:11,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:10" (2/3) ... [2025-02-06 04:31:11,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c94c2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:31:11, skipping insertion in model container [2025-02-06 04:31:11,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:31:11" (3/3) ... [2025-02-06 04:31:11,940 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2025-02-06 04:31:11,952 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:31:11,954 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_90-arrayloop2_racing.i that has 3 procedures, 88 locations, 1 initial locations, 20 loop locations, and 2 error locations. [2025-02-06 04:31:11,954 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:31:12,011 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 04:31:12,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 123 transitions, 266 flow [2025-02-06 04:31:12,086 INFO L124 PetriNetUnfolderBase]: 52/203 cut-off events. [2025-02-06 04:31:12,087 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-02-06 04:31:12,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 203 events. 52/203 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 854 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2025-02-06 04:31:12,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 123 transitions, 266 flow [2025-02-06 04:31:12,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 123 transitions, 266 flow [2025-02-06 04:31:12,103 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:31:12,125 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;@36808192, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:31:12,125 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 04:31:12,147 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:31:12,150 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2025-02-06 04:31:12,151 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:31:12,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:12,151 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-02-06 04:31:12,152 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)] === [2025-02-06 04:31:12,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash -263865940, now seen corresponding path program 1 times [2025-02-06 04:31:12,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:12,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369270041] [2025-02-06 04:31:12,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:12,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:12,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 04:31:12,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 04:31:12,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:12,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:12,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:12,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369270041] [2025-02-06 04:31:12,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369270041] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:12,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:12,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:31:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408533530] [2025-02-06 04:31:12,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:12,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:31:12,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:12,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:31:12,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:31:12,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 123 [2025-02-06 04:31:12,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 123 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2025-02-06 04:31:12,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:12,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 123 [2025-02-06 04:31:12,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:13,747 INFO L124 PetriNetUnfolderBase]: 6551/13577 cut-off events. [2025-02-06 04:31:13,747 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2025-02-06 04:31:13,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23305 conditions, 13577 events. 6551/13577 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 114965 event pairs, 5490 based on Foata normal form. 3195/14753 useless extension candidates. Maximal degree in co-relation 22213. Up to 9600 conditions per place. [2025-02-06 04:31:13,810 INFO L140 encePairwiseOnDemand]: 98/123 looper letters, 64 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2025-02-06 04:31:13,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 104 transitions, 360 flow [2025-02-06 04:31:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:31:13,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:31:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2025-02-06 04:31:13,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5501355013550135 [2025-02-06 04:31:13,820 INFO L175 Difference]: Start difference. First operand has 94 places, 123 transitions, 266 flow. Second operand 3 states and 203 transitions. [2025-02-06 04:31:13,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 104 transitions, 360 flow [2025-02-06 04:31:13,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 104 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:31:13,826 INFO L231 Difference]: Finished difference. Result has 97 places, 102 transitions, 234 flow [2025-02-06 04:31:13,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=97, PETRI_TRANSITIONS=102} [2025-02-06 04:31:13,830 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2025-02-06 04:31:13,830 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 102 transitions, 234 flow [2025-02-06 04:31:13,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2025-02-06 04:31:13,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:13,830 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:13,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:31:13,831 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)] === [2025-02-06 04:31:13,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1468025822, now seen corresponding path program 1 times [2025-02-06 04:31:13,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:13,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734681214] [2025-02-06 04:31:13,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:13,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:13,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:31:13,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:31:13,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:13,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:13,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:13,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734681214] [2025-02-06 04:31:13,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734681214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:13,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:13,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:31:13,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17093216] [2025-02-06 04:31:13,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:13,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:31:13,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:13,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:31:13,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:31:13,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 123 [2025-02-06 04:31:13,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 102 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2025-02-06 04:31:13,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:13,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 123 [2025-02-06 04:31:13,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:14,990 INFO L124 PetriNetUnfolderBase]: 6551/13579 cut-off events. [2025-02-06 04:31:14,990 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2025-02-06 04:31:15,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23316 conditions, 13579 events. 6551/13579 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 114952 event pairs, 5490 based on Foata normal form. 2/11565 useless extension candidates. Maximal degree in co-relation 23297. Up to 9603 conditions per place. [2025-02-06 04:31:15,059 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 63 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2025-02-06 04:31:15,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 103 transitions, 366 flow [2025-02-06 04:31:15,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:31:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:31:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2025-02-06 04:31:15,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48509485094850946 [2025-02-06 04:31:15,063 INFO L175 Difference]: Start difference. First operand has 97 places, 102 transitions, 234 flow. Second operand 3 states and 179 transitions. [2025-02-06 04:31:15,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 103 transitions, 366 flow [2025-02-06 04:31:15,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 103 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:15,067 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 246 flow [2025-02-06 04:31:15,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2025-02-06 04:31:15,068 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2025-02-06 04:31:15,068 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 246 flow [2025-02-06 04:31:15,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2025-02-06 04:31:15,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:15,069 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:15,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:31:15,069 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)] === [2025-02-06 04:31:15,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash 475584898, now seen corresponding path program 1 times [2025-02-06 04:31:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:15,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938977125] [2025-02-06 04:31:15,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:15,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 04:31:15,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 04:31:15,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:15,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:15,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:15,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938977125] [2025-02-06 04:31:15,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938977125] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:15,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677209645] [2025-02-06 04:31:15,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:15,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:15,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:15,234 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) [2025-02-06 04:31:15,235 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 [2025-02-06 04:31:15,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 04:31:15,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 04:31:15,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:15,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:15,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:31:15,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:15,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:15,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677209645] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:15,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:15,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-06 04:31:15,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920191576] [2025-02-06 04:31:15,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:15,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:31:15,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:15,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:31:15,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:31:15,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 123 [2025-02-06 04:31:15,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 39.857142857142854) internal successors, (279), 7 states have internal predecessors, (279), 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) [2025-02-06 04:31:15,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:15,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 123 [2025-02-06 04:31:15,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:16,618 INFO L124 PetriNetUnfolderBase]: 6551/13585 cut-off events. [2025-02-06 04:31:16,618 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2025-02-06 04:31:16,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23344 conditions, 13585 events. 6551/13585 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 115060 event pairs, 5490 based on Foata normal form. 6/11575 useless extension candidates. Maximal degree in co-relation 23304. Up to 9603 conditions per place. [2025-02-06 04:31:16,666 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 63 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2025-02-06 04:31:16,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 106 transitions, 394 flow [2025-02-06 04:31:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:31:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:31:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 298 transitions. [2025-02-06 04:31:16,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2025-02-06 04:31:16,668 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 246 flow. Second operand 6 states and 298 transitions. [2025-02-06 04:31:16,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 106 transitions, 394 flow [2025-02-06 04:31:16,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 106 transitions, 390 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:16,670 INFO L231 Difference]: Finished difference. Result has 106 places, 106 transitions, 284 flow [2025-02-06 04:31:16,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=106, PETRI_TRANSITIONS=106} [2025-02-06 04:31:16,671 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 12 predicate places. [2025-02-06 04:31:16,671 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 106 transitions, 284 flow [2025-02-06 04:31:16,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.857142857142854) internal successors, (279), 7 states have internal predecessors, (279), 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) [2025-02-06 04:31:16,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:16,672 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:16,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:31:16,874 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 [2025-02-06 04:31:16,878 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)] === [2025-02-06 04:31:16,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1749945378, now seen corresponding path program 2 times [2025-02-06 04:31:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407614824] [2025-02-06 04:31:16,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:16,930 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 04:31:16,962 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:31:16,962 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:16,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-06 04:31:17,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407614824] [2025-02-06 04:31:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407614824] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955734034] [2025-02-06 04:31:17,098 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:17,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:17,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:17,101 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) [2025-02-06 04:31:17,105 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 [2025-02-06 04:31:17,344 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-06 04:31:17,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:31:17,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:17,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:17,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:31:17,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:17,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:17,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955734034] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:17,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:17,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-02-06 04:31:17,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20732734] [2025-02-06 04:31:17,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:17,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:31:17,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:17,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:31:17,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:31:17,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 123 [2025-02-06 04:31:17,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 106 transitions, 284 flow. Second operand has 14 states, 14 states have (on average 39.57142857142857) internal successors, (554), 14 states have internal predecessors, (554), 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) [2025-02-06 04:31:17,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:17,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 123 [2025-02-06 04:31:17,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:19,169 INFO L124 PetriNetUnfolderBase]: 6552/13610 cut-off events. [2025-02-06 04:31:19,169 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2025-02-06 04:31:19,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23472 conditions, 13610 events. 6552/13610 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 115055 event pairs, 5490 based on Foata normal form. 19/11613 useless extension candidates. Maximal degree in co-relation 23300. Up to 9600 conditions per place. [2025-02-06 04:31:19,218 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 63 selfloop transitions, 36 changer transitions 0/137 dead transitions. [2025-02-06 04:31:19,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 682 flow [2025-02-06 04:31:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 04:31:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-06 04:31:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1410 transitions. [2025-02-06 04:31:19,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33715925394548063 [2025-02-06 04:31:19,224 INFO L175 Difference]: Start difference. First operand has 106 places, 106 transitions, 284 flow. Second operand 34 states and 1410 transitions. [2025-02-06 04:31:19,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 682 flow [2025-02-06 04:31:19,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 137 transitions, 640 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:19,230 INFO L231 Difference]: Finished difference. Result has 151 places, 137 transitions, 576 flow [2025-02-06 04:31:19,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=576, PETRI_PLACES=151, PETRI_TRANSITIONS=137} [2025-02-06 04:31:19,233 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 57 predicate places. [2025-02-06 04:31:19,233 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 137 transitions, 576 flow [2025-02-06 04:31:19,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 39.57142857142857) internal successors, (554), 14 states have internal predecessors, (554), 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) [2025-02-06 04:31:19,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:19,233 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 04:31:19,242 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 [2025-02-06 04:31:19,434 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 [2025-02-06 04:31:19,434 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)] === [2025-02-06 04:31:19,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:19,435 INFO L85 PathProgramCache]: Analyzing trace with hash 497051032, now seen corresponding path program 3 times [2025-02-06 04:31:19,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:19,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029934822] [2025-02-06 04:31:19,435 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:31:19,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:19,609 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-02-06 04:31:31,789 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:31:31,789 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-02-06 04:31:31,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-02-06 04:31:32,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029934822] [2025-02-06 04:31:32,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029934822] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456144844] [2025-02-06 04:31:32,059 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:31:32,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:32,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:32,063 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) [2025-02-06 04:31:32,065 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 [2025-02-06 04:31:32,406 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.