./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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_19-callback_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 a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:25:40,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:25:40,533 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:25:40,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:25:40,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:25:40,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:25:40,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:25:40,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:25:40,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:25:40,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:25:40,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:25:40,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:25:40,551 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:25:40,552 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:25:40,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:25:40,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:25:40,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:25:40,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:25:40,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:25:40,553 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 -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2025-03-08 17:25:40,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:25:40,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:25:40,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:25:40,804 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:25:40,804 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:25:40,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2025-03-08 17:25:41,923 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e650d3772/8ad1e647551742feae518ca4190deb41/FLAGbe7c87f5a [2025-03-08 17:25:42,197 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:25:42,198 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2025-03-08 17:25:42,214 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e650d3772/8ad1e647551742feae518ca4190deb41/FLAGbe7c87f5a [2025-03-08 17:25:42,482 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e650d3772/8ad1e647551742feae518ca4190deb41 [2025-03-08 17:25:42,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:25:42,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:25:42,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:25:42,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:25:42,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:25:42,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28577a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42, skipping insertion in model container [2025-03-08 17:25:42,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,508 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:25:42,756 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_19-callback_racing.i[30212,30225] [2025-03-08 17:25:42,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:25:42,806 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:25:42,844 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_19-callback_racing.i[30212,30225] [2025-03-08 17:25:42,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:25:42,882 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:25:42,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42 WrapperNode [2025-03-08 17:25:42,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:25:42,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:25:42,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:25:42,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:25:42,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,907 INFO L138 Inliner]: procedures = 174, calls = 44, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2025-03-08 17:25:42,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:25:42,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:25:42,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:25:42,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:25:42,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,923 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2025-03-08 17:25:42,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,927 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:25:42,931 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:25:42,931 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:25:42,931 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:25:42,932 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (1/1) ... [2025-03-08 17:25:42,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:25:42,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:25:42,955 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) [2025-03-08 17:25:42,957 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 [2025-03-08 17:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 17:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 17:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 17:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 17:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 17:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 17:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 17:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 17:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-08 17:25:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-08 17:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:25:42,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:25:42,972 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:25:43,074 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:25:43,075 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:25:43,205 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L720: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-08 17:25:43,205 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L720-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-08 17:25:43,225 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:25:43,226 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:25:43,364 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:25:43,365 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:25:43,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:25:43 BoogieIcfgContainer [2025-03-08 17:25:43,365 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:25:43,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:25:43,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:25:43,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:25:43,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:25:42" (1/3) ... [2025-03-08 17:25:43,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7def20ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:25:43, skipping insertion in model container [2025-03-08 17:25:43,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:25:42" (2/3) ... [2025-03-08 17:25:43,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7def20ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:25:43, skipping insertion in model container [2025-03-08 17:25:43,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:25:43" (3/3) ... [2025-03-08 17:25:43,372 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2025-03-08 17:25:43,382 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:25:43,384 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_19-callback_racing.i that has 2 procedures, 41 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-08 17:25:43,385 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:25:43,420 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-08 17:25:43,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 53 transitions, 113 flow [2025-03-08 17:25:43,482 INFO L124 PetriNetUnfolderBase]: 20/83 cut-off events. [2025-03-08 17:25:43,484 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 17:25:43,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 83 events. 20/83 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 265 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2025-03-08 17:25:43,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 53 transitions, 113 flow [2025-03-08 17:25:43,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 51 transitions, 106 flow [2025-03-08 17:25:43,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:25:43,503 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;@2f204bdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:25:43,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-08 17:25:43,510 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:25:43,510 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2025-03-08 17:25:43,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:25:43,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:25:43,511 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-08 17:25:43,511 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 17:25:43,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:25:43,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1317098049, now seen corresponding path program 1 times [2025-03-08 17:25:43,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:25:43,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838507061] [2025-03-08 17:25:43,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:25:43,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:25:43,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 17:25:43,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 17:25:43,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:25:43,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:25:43,625 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 17:25:43,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 17:25:43,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 17:25:43,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:25:43,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:25:43,666 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 17:25:43,667 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 17:25:43,668 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-03-08 17:25:43,671 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-03-08 17:25:43,671 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-03-08 17:25:43,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:25:43,671 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-08 17:25:43,677 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-08 17:25:43,677 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-08 17:25:43,719 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-08 17:25:43,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 72 transitions, 160 flow [2025-03-08 17:25:43,749 INFO L124 PetriNetUnfolderBase]: 33/139 cut-off events. [2025-03-08 17:25:43,751 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2025-03-08 17:25:43,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 139 events. 33/139 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 575 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 87. Up to 9 conditions per place. [2025-03-08 17:25:43,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 72 transitions, 160 flow [2025-03-08 17:25:43,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 72 transitions, 160 flow [2025-03-08 17:25:43,755 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:25:43,756 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;@2f204bdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:25:43,756 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-08 17:25:43,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:25:43,765 INFO L124 PetriNetUnfolderBase]: 6/52 cut-off events. [2025-03-08 17:25:43,765 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2025-03-08 17:25:43,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:25:43,765 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-08 17:25:43,765 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 17:25:43,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:25:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1998320844, now seen corresponding path program 1 times [2025-03-08 17:25:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:25:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409732939] [2025-03-08 17:25:43,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:25:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:25:43,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 17:25:43,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 17:25:43,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:25:43,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:25:43,799 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 17:25:43,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 17:25:43,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 17:25:43,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:25:43,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:25:43,818 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 17:25:43,818 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 17:25:43,819 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-03-08 17:25:43,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-03-08 17:25:43,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-03-08 17:25:43,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-03-08 17:25:43,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:25:43,819 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-08 17:25:43,822 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-08 17:25:43,822 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-08 17:25:43,843 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-08 17:25:43,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 91 transitions, 209 flow [2025-03-08 17:25:43,878 INFO L124 PetriNetUnfolderBase]: 49/206 cut-off events. [2025-03-08 17:25:43,878 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2025-03-08 17:25:43,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 206 events. 49/206 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 909 event pairs, 1 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 150. Up to 12 conditions per place. [2025-03-08 17:25:43,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 91 transitions, 209 flow [2025-03-08 17:25:43,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 91 transitions, 209 flow [2025-03-08 17:25:43,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:25:43,882 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;@2f204bdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:25:43,882 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-08 17:25:43,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:25:43,889 INFO L124 PetriNetUnfolderBase]: 7/70 cut-off events. [2025-03-08 17:25:43,889 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2025-03-08 17:25:43,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:25:43,890 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:25:43,890 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-08 17:25:43,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:25:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash 649535631, now seen corresponding path program 1 times [2025-03-08 17:25:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:25:43,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010981711] [2025-03-08 17:25:43,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:25:43,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:25:43,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 17:25:43,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 17:25:43,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:25:43,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:25:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:25:44,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:25:44,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010981711] [2025-03-08 17:25:44,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010981711] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:25:44,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:25:44,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:25:44,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267301471] [2025-03-08 17:25:44,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:25:44,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:25:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:25:44,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:25:44,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:25:44,105 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 91 [2025-03-08 17:25:44,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 91 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2025-03-08 17:25:44,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:25:44,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 91 [2025-03-08 17:25:44,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:25:48,953 INFO L124 PetriNetUnfolderBase]: 54674/84502 cut-off events. [2025-03-08 17:25:48,953 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2025-03-08 17:25:49,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161473 conditions, 84502 events. 54674/84502 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 1713. Compared 689425 event pairs, 17942 based on Foata normal form. 15178/91580 useless extension candidates. Maximal degree in co-relation 43681. Up to 37812 conditions per place. [2025-03-08 17:25:49,540 INFO L140 encePairwiseOnDemand]: 70/91 looper letters, 145 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2025-03-08 17:25:49,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 178 transitions, 720 flow [2025-03-08 17:25:49,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:25:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:25:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 329 transitions. [2025-03-08 17:25:49,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7230769230769231 [2025-03-08 17:25:49,556 INFO L175 Difference]: Start difference. First operand has 78 places, 91 transitions, 209 flow. Second operand 5 states and 329 transitions. [2025-03-08 17:25:49,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 178 transitions, 720 flow [2025-03-08 17:25:49,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 178 transitions, 720 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 17:25:49,569 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 229 flow [2025-03-08 17:25:49,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2025-03-08 17:25:49,573 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2025-03-08 17:25:49,573 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 229 flow [2025-03-08 17:25:49,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2025-03-08 17:25:49,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:25:49,573 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-03-08 17:25:49,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:25:49,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-03-08 17:25:49,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:25:49,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1831147552, now seen corresponding path program 1 times [2025-03-08 17:25:49,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:25:49,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636572235] [2025-03-08 17:25:49,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:25:49,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:25:49,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 17:25:49,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 17:25:49,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:25:49,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:25:49,590 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 17:25:49,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 17:25:49,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 17:25:49,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:25:49,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:25:49,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 17:25:49,615 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 17:25:49,616 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-03-08 17:25:49,616 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-03-08 17:25:49,616 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-03-08 17:25:49,616 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-03-08 17:25:49,616 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-03-08 17:25:49,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:25:49,616 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-08 17:25:49,617 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-08 17:25:49,617 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-08 17:25:49,635 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-08 17:25:49,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 110 transitions, 260 flow [2025-03-08 17:25:49,660 INFO L124 PetriNetUnfolderBase]: 73/297 cut-off events. [2025-03-08 17:25:49,661 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2025-03-08 17:25:49,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 297 events. 73/297 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1392 event pairs, 6 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 230. Up to 32 conditions per place. [2025-03-08 17:25:49,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 110 transitions, 260 flow [2025-03-08 17:25:49,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 110 transitions, 260 flow [2025-03-08 17:25:49,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:25:49,665 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;@2f204bdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:25:49,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-08 17:25:49,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:25:49,668 INFO L124 PetriNetUnfolderBase]: 7/70 cut-off events. [2025-03-08 17:25:49,668 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2025-03-08 17:25:49,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:25:49,669 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:25:49,669 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-03-08 17:25:49,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:25:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2055921103, now seen corresponding path program 1 times [2025-03-08 17:25:49,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:25:49,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322684333] [2025-03-08 17:25:49,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:25:49,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:25:49,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 17:25:49,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 17:25:49,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:25:49,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:25:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:25:49,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:25:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322684333] [2025-03-08 17:25:49,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322684333] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:25:49,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:25:49,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:25:49,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371259019] [2025-03-08 17:25:49,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:25:49,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:25:49,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:25:49,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:25:49,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:25:49,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 110 [2025-03-08 17:25:49,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 110 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2025-03-08 17:25:49,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:25:49,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 110 [2025-03-08 17:25:49,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand