./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:15:20,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:15:20,091 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:15:20,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:15:20,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:15:20,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:15:20,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:15:20,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:15:20,113 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:15:20,113 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:15:20,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:15:20,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:15:20,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:15:20,114 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:15:20,114 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:15:20,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:15:20,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:15:20,114 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:15:20,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:15:20,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:15:20,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:15:20,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:15:20,115 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:15:20,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:15:20,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:15:20,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:15:20,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:15:20,116 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/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 -> b4399e58ed3ca9c75e2a61372e91a4308548a0e79a3eb4428d85990bd71242f7 [2025-03-04 02:15:20,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:15:20,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:15:20,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:15:20,345 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:15:20,346 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:15:20,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2025-03-04 02:15:21,490 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a9410d9f/ac28f0c5dafd49699dd1634dbc18875b/FLAGd156c9992 [2025-03-04 02:15:21,796 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:15:21,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2025-03-04 02:15:21,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a9410d9f/ac28f0c5dafd49699dd1634dbc18875b/FLAGd156c9992 [2025-03-04 02:15:22,072 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a9410d9f/ac28f0c5dafd49699dd1634dbc18875b [2025-03-04 02:15:22,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:15:22,077 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:15:22,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:15:22,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:15:22,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:15:22,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebdb406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22, skipping insertion in model container [2025-03-04 02:15:22,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,115 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:15:22,337 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2025-03-04 02:15:22,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:15:22,364 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:15:22,400 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2025-03-04 02:15:22,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:15:22,430 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:15:22,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22 WrapperNode [2025-03-04 02:15:22,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:15:22,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:15:22,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:15:22,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:15:22,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,455 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2025-03-04 02:15:22,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:15:22,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:15:22,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:15:22,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:15:22,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,477 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2025-03-04 02:15:22,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,483 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:15:22,491 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:15:22,491 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:15:22,491 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:15:22,492 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (1/1) ... [2025-03-04 02:15:22,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:15:22,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:15:22,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 02:15:22,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 02:15:22,543 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:15:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 02:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 02:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 02:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 02:15:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:15:22,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:15:22,546 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:15:22,647 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:15:22,649 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:15:22,787 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-04 02:15:22,787 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L713-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-04 02:15:22,839 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:15:22,840 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:15:22,945 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:15:22,946 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:15:22,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:15:22 BoogieIcfgContainer [2025-03-04 02:15:22,947 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:15:22,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:15:22,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:15:22,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:15:22,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:15:22" (1/3) ... [2025-03-04 02:15:22,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f15dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:15:22, skipping insertion in model container [2025-03-04 02:15:22,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:15:22" (2/3) ... [2025-03-04 02:15:22,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f15dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:15:22, skipping insertion in model container [2025-03-04 02:15:22,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:15:22" (3/3) ... [2025-03-04 02:15:22,956 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2025-03-04 02:15:22,970 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:15:22,972 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_61-invariant_racing.i that has 2 procedures, 59 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-03-04 02:15:22,972 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:15:23,014 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 02:15:23,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 76 transitions, 159 flow [2025-03-04 02:15:23,083 INFO L124 PetriNetUnfolderBase]: 26/113 cut-off events. [2025-03-04 02:15:23,088 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 02:15:23,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 26/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 377 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 71. Up to 6 conditions per place. [2025-03-04 02:15:23,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 76 transitions, 159 flow [2025-03-04 02:15:23,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 74 transitions, 152 flow [2025-03-04 02:15:23,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:15:23,118 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;@12f69b95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:15:23,119 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 02:15:23,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:15:23,129 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2025-03-04 02:15:23,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:15:23,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:15:23,129 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 02:15:23,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 02:15:23,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:15:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1861097086, now seen corresponding path program 1 times [2025-03-04 02:15:23,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:15:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592682191] [2025-03-04 02:15:23,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:15:23,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:15:23,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 02:15:23,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 02:15:23,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:15:23,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:15:23,253 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 02:15:23,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 02:15:23,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 02:15:23,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:15:23,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:15:23,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 02:15:23,306 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 02:15:23,307 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2025-03-04 02:15:23,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-03-04 02:15:23,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:15:23,309 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 02:15:23,312 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 02:15:23,313 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 02:15:23,334 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 02:15:23,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 111 transitions, 238 flow [2025-03-04 02:15:23,378 INFO L124 PetriNetUnfolderBase]: 44/192 cut-off events. [2025-03-04 02:15:23,379 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2025-03-04 02:15:23,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 192 events. 44/192 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 835 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 117. Up to 9 conditions per place. [2025-03-04 02:15:23,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 111 transitions, 238 flow [2025-03-04 02:15:23,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 111 transitions, 238 flow [2025-03-04 02:15:23,387 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:15:23,388 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;@12f69b95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:15:23,389 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 02:15:23,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:15:23,396 INFO L124 PetriNetUnfolderBase]: 9/60 cut-off events. [2025-03-04 02:15:23,396 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 02:15:23,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:15:23,398 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-04 02:15:23,398 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 02:15:23,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:15:23,399 INFO L85 PathProgramCache]: Analyzing trace with hash -433429345, now seen corresponding path program 1 times [2025-03-04 02:15:23,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:15:23,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049920802] [2025-03-04 02:15:23,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:15:23,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:15:23,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 02:15:23,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 02:15:23,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:15:23,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:15:23,431 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 02:15:23,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 02:15:23,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 02:15:23,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:15:23,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:15:23,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 02:15:23,470 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 02:15:23,471 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2025-03-04 02:15:23,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-03-04 02:15:23,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:15:23,472 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 02:15:23,473 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 02:15:23,473 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-04 02:15:23,500 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 02:15:23,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 146 transitions, 319 flow [2025-03-04 02:15:23,537 INFO L124 PetriNetUnfolderBase]: 65/282 cut-off events. [2025-03-04 02:15:23,537 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2025-03-04 02:15:23,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 282 events. 65/282 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1351 event pairs, 1 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 203. Up to 12 conditions per place. [2025-03-04 02:15:23,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 146 transitions, 319 flow [2025-03-04 02:15:23,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 146 transitions, 319 flow [2025-03-04 02:15:23,546 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:15:23,547 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;@12f69b95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:15:23,547 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 02:15:23,554 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:15:23,556 INFO L124 PetriNetUnfolderBase]: 11/72 cut-off events. [2025-03-04 02:15:23,556 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 02:15:23,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:15:23,556 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:15:23,557 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 02:15:23,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:15:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash 351613154, now seen corresponding path program 1 times [2025-03-04 02:15:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:15:23,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680756315] [2025-03-04 02:15:23,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:15:23,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:15:23,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 02:15:23,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 02:15:23,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:15:23,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:15:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:15:23,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:15:23,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680756315] [2025-03-04 02:15:23,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680756315] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:15:23,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:15:23,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 02:15:23,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159230013] [2025-03-04 02:15:23,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:15:23,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:15:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:15:23,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:15:23,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:15:23,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 146 [2025-03-04 02:15:23,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 146 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2025-03-04 02:15:23,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:15:23,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 146 [2025-03-04 02:15:23,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:15:39,244 INFO L124 PetriNetUnfolderBase]: 165287/272316 cut-off events. [2025-03-04 02:15:39,244 INFO L125 PetriNetUnfolderBase]: For 3833/3833 co-relation queries the response was YES. [2025-03-04 02:15:39,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497036 conditions, 272316 events. 165287/272316 cut-off events. For 3833/3833 co-relation queries the response was YES. Maximal size of possible extension queue 5822. Compared 2792225 event pairs, 148972 based on Foata normal form. 48368/306607 useless extension candidates. Maximal degree in co-relation 85753. Up to 223197 conditions per place. [2025-03-04 02:15:40,457 INFO L140 encePairwiseOnDemand]: 116/146 looper letters, 68 selfloop transitions, 2 changer transitions 12/134 dead transitions. [2025-03-04 02:15:40,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 134 transitions, 455 flow [2025-03-04 02:15:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:15:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:15:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2025-03-04 02:15:40,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6301369863013698 [2025-03-04 02:15:40,469 INFO L175 Difference]: Start difference. First operand has 120 places, 146 transitions, 319 flow. Second operand 3 states and 276 transitions. [2025-03-04 02:15:40,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 134 transitions, 455 flow [2025-03-04 02:15:40,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 134 transitions, 455 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 02:15:40,478 INFO L231 Difference]: Finished difference. Result has 123 places, 108 transitions, 244 flow [2025-03-04 02:15:40,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=123, PETRI_TRANSITIONS=108} [2025-03-04 02:15:40,483 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 3 predicate places. [2025-03-04 02:15:40,483 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 244 flow [2025-03-04 02:15:40,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2025-03-04 02:15:40,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:15:40,483 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-03-04 02:15:40,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 02:15:40,484 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 02:15:40,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:15:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2006809731, now seen corresponding path program 1 times [2025-03-04 02:15:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:15:40,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748324511] [2025-03-04 02:15:40,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:15:40,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:15:40,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 02:15:40,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 02:15:40,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:15:40,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:15:40,513 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 02:15:40,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 02:15:40,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 02:15:40,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:15:40,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:15:40,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 02:15:40,528 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 02:15:40,528 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2025-03-04 02:15:40,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-03-04 02:15:40,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 02:15:40,528 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 02:15:40,529 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 02:15:40,529 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-04 02:15:40,552 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-04 02:15:40,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 181 transitions, 402 flow [2025-03-04 02:15:40,589 INFO L124 PetriNetUnfolderBase]: 94/396 cut-off events. [2025-03-04 02:15:40,589 INFO L125 PetriNetUnfolderBase]: For 48/54 co-relation queries the response was YES. [2025-03-04 02:15:40,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 396 events. 94/396 cut-off events. For 48/54 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1994 event pairs, 6 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 306. Up to 32 conditions per place. [2025-03-04 02:15:40,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 181 transitions, 402 flow [2025-03-04 02:15:40,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 181 transitions, 402 flow [2025-03-04 02:15:40,598 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:15:40,599 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;@12f69b95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:15:40,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 02:15:40,602 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:15:40,602 INFO L124 PetriNetUnfolderBase]: 11/72 cut-off events. [2025-03-04 02:15:40,602 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 02:15:40,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:15:40,603 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:15:40,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 02:15:40,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:15:40,603 INFO L85 PathProgramCache]: Analyzing trace with hash 24975127, now seen corresponding path program 1 times [2025-03-04 02:15:40,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:15:40,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761498842] [2025-03-04 02:15:40,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:15:40,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:15:40,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 02:15:40,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 02:15:40,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:15:40,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:15:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:15:40,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:15:40,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761498842] [2025-03-04 02:15:40,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761498842] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:15:40,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:15:40,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 02:15:40,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569912916] [2025-03-04 02:15:40,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:15:40,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:15:40,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:15:40,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:15:40,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:15:40,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 181 [2025-03-04 02:15:40,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 181 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2025-03-04 02:15:40,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:15:40,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 181 [2025-03-04 02:15:40,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand