./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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_91-arrayloop2_racefree.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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:40:05,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:40:05,972 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:40:05,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:40:05,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:40:06,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:40:06,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:40:06,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:40:06,002 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:40:06,002 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:40:06,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:40:06,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:40:06,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:40:06,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:40:06,004 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:40:06,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:40:06,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:40:06,004 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:40:06,005 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:40:06,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:40:06,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:40:06,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:40:06,006 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:40:06,006 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:40:06,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:40:06,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:40:06,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:40:06,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:40:06,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:40:06,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:40:06,006 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 -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2025-03-13 21:40:06,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:40:06,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:40:06,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:40:06,257 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:40:06,257 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:40:06,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2025-03-13 21:40:07,369 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a081c900c/1315c2d0fbc94d229d179961abb4411f/FLAG149b325a6 [2025-03-13 21:40:07,733 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:40:07,735 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2025-03-13 21:40:07,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a081c900c/1315c2d0fbc94d229d179961abb4411f/FLAG149b325a6 [2025-03-13 21:40:07,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a081c900c/1315c2d0fbc94d229d179961abb4411f [2025-03-13 21:40:07,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:40:07,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:40:07,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:40:07,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:40:07,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:40:07,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:40:07" (1/1) ... [2025-03-13 21:40:07,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b95d66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:07, skipping insertion in model container [2025-03-13 21:40:07,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:40:07" (1/1) ... [2025-03-13 21:40:07,993 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:40:08,263 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_91-arrayloop2_racefree.i[47038,47051] [2025-03-13 21:40:08,276 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,276 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,276 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,276 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:40:08,328 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:40:08,369 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_91-arrayloop2_racefree.i[47038,47051] [2025-03-13 21:40:08,372 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,372 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,374 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,374 WARN L1731 CHandler]: Possible shadowing of function new [2025-03-13 21:40:08,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:40:08,426 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:40:08,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08 WrapperNode [2025-03-13 21:40:08,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:40:08,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:40:08,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:40:08,428 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:40:08,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,466 INFO L138 Inliner]: procedures = 279, calls = 119, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2025-03-13 21:40:08,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:40:08,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:40:08,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:40:08,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:40:08,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,478 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,491 INFO L175 MemorySlicer]: Split 96 memory accesses to 4 slices as follows [2, 5, 87, 2]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 70, 0]. The 12 writes are split as follows [0, 0, 11, 1]. [2025-03-13 21:40:08,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,505 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:40:08,520 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:40:08,520 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:40:08,520 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:40:08,520 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (1/1) ... [2025-03-13 21:40:08,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:40:08,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:40:08,548 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) [2025-03-13 21:40:08,556 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 [2025-03-13 21:40:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-13 21:40:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-13 21:40:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-13 21:40:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-13 21:40:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-13 21:40:08,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-13 21:40:08,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-13 21:40:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:40:08,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:40:08,575 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:40:08,713 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:40:08,714 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:40:08,941 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2025-03-13 21:40:08,941 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2025-03-13 21:40:09,039 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:40:09,040 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:40:09,040 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:40:09,523 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:40:09,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:40:09 BoogieIcfgContainer [2025-03-13 21:40:09,524 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:40:09,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:40:09,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:40:09,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:40:09,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:40:07" (1/3) ... [2025-03-13 21:40:09,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a9313c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:40:09, skipping insertion in model container [2025-03-13 21:40:09,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:40:08" (2/3) ... [2025-03-13 21:40:09,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a9313c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:40:09, skipping insertion in model container [2025-03-13 21:40:09,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:40:09" (3/3) ... [2025-03-13 21:40:09,532 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2025-03-13 21:40:09,546 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:40:09,547 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_91-arrayloop2_racefree.i that has 2 procedures, 42 locations, 1 initial locations, 10 loop locations, and 1 error locations. [2025-03-13 21:40:09,547 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:40:09,590 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-13 21:40:09,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 59 transitions, 125 flow [2025-03-13 21:40:09,647 INFO L124 PetriNetUnfolderBase]: 17/63 cut-off events. [2025-03-13 21:40:09,650 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 21:40:09,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 17/63 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 127 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2025-03-13 21:40:09,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 59 transitions, 125 flow [2025-03-13 21:40:09,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 57 transitions, 118 flow [2025-03-13 21:40:09,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:40:09,674 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;@43d0c559, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:40:09,674 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-13 21:40:09,681 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:40:09,681 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-03-13 21:40:09,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:40:09,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:09,682 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-13 21:40:09,682 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-13 21:40:09,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:09,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1274186611, now seen corresponding path program 1 times [2025-03-13 21:40:09,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:09,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491858773] [2025-03-13 21:40:09,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:40:09,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:09,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-13 21:40:09,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-13 21:40:09,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:40:09,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:09,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:09,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491858773] [2025-03-13 21:40:09,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491858773] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:40:09,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:40:09,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-13 21:40:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362550572] [2025-03-13 21:40:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:40:09,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:40:09,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:40:09,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:40:09,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:40:09,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-13 21:40:09,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 57 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:40:09,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:40:09,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-13 21:40:09,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:40:10,241 INFO L124 PetriNetUnfolderBase]: 111/310 cut-off events. [2025-03-13 21:40:10,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:40:10,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 310 events. 111/310 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1274 event pairs, 90 based on Foata normal form. 36/284 useless extension candidates. Maximal degree in co-relation 509. Up to 226 conditions per place. [2025-03-13 21:40:10,245 INFO L140 encePairwiseOnDemand]: 45/59 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2025-03-13 21:40:10,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 170 flow [2025-03-13 21:40:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:40:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:40:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2025-03-13 21:40:10,255 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5141242937853108 [2025-03-13 21:40:10,256 INFO L175 Difference]: Start difference. First operand has 44 places, 57 transitions, 118 flow. Second operand 3 states and 91 transitions. [2025-03-13 21:40:10,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 170 flow [2025-03-13 21:40:10,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 21:40:10,263 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 108 flow [2025-03-13 21:40:10,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2025-03-13 21:40:10,268 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2025-03-13 21:40:10,269 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 108 flow [2025-03-13 21:40:10,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:40:10,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:10,269 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:40:10,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:40:10,269 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-13 21:40:10,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:10,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1528776708, now seen corresponding path program 1 times [2025-03-13 21:40:10,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:10,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682515256] [2025-03-13 21:40:10,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:40:10,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:10,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-13 21:40:10,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-13 21:40:10,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:40:10,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:10,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682515256] [2025-03-13 21:40:10,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682515256] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:40:10,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:40:10,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:40:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285843996] [2025-03-13 21:40:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:40:10,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:40:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:40:10,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:40:10,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:40:10,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-13 21:40:10,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2025-03-13 21:40:10,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:40:10,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-13 21:40:10,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:40:10,611 INFO L124 PetriNetUnfolderBase]: 111/312 cut-off events. [2025-03-13 21:40:10,612 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:40:10,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 312 events. 111/312 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1280 event pairs, 90 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 536. Up to 229 conditions per place. [2025-03-13 21:40:10,616 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 31 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2025-03-13 21:40:10,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 176 flow [2025-03-13 21:40:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:40:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:40:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2025-03-13 21:40:10,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4406779661016949 [2025-03-13 21:40:10,618 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 108 flow. Second operand 3 states and 78 transitions. [2025-03-13 21:40:10,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 176 flow [2025-03-13 21:40:10,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-13 21:40:10,620 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 120 flow [2025-03-13 21:40:10,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2025-03-13 21:40:10,622 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2025-03-13 21:40:10,622 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 120 flow [2025-03-13 21:40:10,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2025-03-13 21:40:10,622 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:10,622 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:40:10,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:40:10,623 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-13 21:40:10,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash 281589261, now seen corresponding path program 1 times [2025-03-13 21:40:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:10,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459682779] [2025-03-13 21:40:10,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:40:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:10,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-13 21:40:10,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-13 21:40:10,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:40:10,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:10,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:10,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459682779] [2025-03-13 21:40:10,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459682779] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:40:10,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254301960] [2025-03-13 21:40:10,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:40:10,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:40:10,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:40:10,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:40:10,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-13 21:40:10,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-13 21:40:10,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-13 21:40:10,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:40:10,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:10,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-13 21:40:10,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:40:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:10,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:40:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:11,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254301960] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:40:11,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:40:11,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-13 21:40:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87985527] [2025-03-13 21:40:11,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:40:11,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:40:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:40:11,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:40:11,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:40:11,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-13 21:40:11,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2025-03-13 21:40:11,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:40:11,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-13 21:40:11,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:40:11,281 INFO L124 PetriNetUnfolderBase]: 111/318 cut-off events. [2025-03-13 21:40:11,281 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 21:40:11,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 318 events. 111/318 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1299 event pairs, 90 based on Foata normal form. 6/265 useless extension candidates. Maximal degree in co-relation 543. Up to 229 conditions per place. [2025-03-13 21:40:11,283 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 31 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2025-03-13 21:40:11,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 204 flow [2025-03-13 21:40:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:40:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:40:11,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2025-03-13 21:40:11,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3615819209039548 [2025-03-13 21:40:11,285 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 120 flow. Second operand 6 states and 128 transitions. [2025-03-13 21:40:11,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 204 flow [2025-03-13 21:40:11,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 200 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-13 21:40:11,286 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 158 flow [2025-03-13 21:40:11,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2025-03-13 21:40:11,287 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2025-03-13 21:40:11,287 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 158 flow [2025-03-13 21:40:11,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2025-03-13 21:40:11,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:11,287 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:40:11,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-13 21:40:11,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:40:11,488 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-13 21:40:11,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1576547388, now seen corresponding path program 2 times [2025-03-13 21:40:11,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:11,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809213204] [2025-03-13 21:40:11,489 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:40:11,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:11,549 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-13 21:40:11,571 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-13 21:40:11,571 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:40:11,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-13 21:40:11,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809213204] [2025-03-13 21:40:11,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809213204] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:40:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333364728] [2025-03-13 21:40:11,705 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:40:11,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:40:11,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:40:11,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:40:11,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-13 21:40:11,883 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-13 21:40:11,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-13 21:40:11,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-13 21:40:11,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:11,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-13 21:40:11,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-13 21:40:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:11,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-13 21:40:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:40:12,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333364728] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-13 21:40:12,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-13 21:40:12,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2025-03-13 21:40:12,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839841381] [2025-03-13 21:40:12,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-13 21:40:12,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-13 21:40:12,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:40:12,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-13 21:40:12,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-13 21:40:12,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2025-03-13 21:40:12,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 158 flow. Second operand has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2025-03-13 21:40:12,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:40:12,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2025-03-13 21:40:12,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:40:12,922 INFO L124 PetriNetUnfolderBase]: 112/343 cut-off events. [2025-03-13 21:40:12,922 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2025-03-13 21:40:12,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 343 events. 112/343 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1355 event pairs, 90 based on Foata normal form. 19/303 useless extension candidates. Maximal degree in co-relation 539. Up to 226 conditions per place. [2025-03-13 21:40:12,925 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 31 selfloop transitions, 36 changer transitions 0/82 dead transitions. [2025-03-13 21:40:12,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 492 flow [2025-03-13 21:40:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-13 21:40:12,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-13 21:40:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 596 transitions. [2025-03-13 21:40:12,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2971086739780658 [2025-03-13 21:40:12,929 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 158 flow. Second operand 34 states and 596 transitions. [2025-03-13 21:40:12,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 492 flow [2025-03-13 21:40:12,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 450 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-13 21:40:12,932 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 450 flow [2025-03-13 21:40:12,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=450, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2025-03-13 21:40:12,932 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 57 predicate places. [2025-03-13 21:40:12,932 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 450 flow [2025-03-13 21:40:12,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2025-03-13 21:40:12,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:40:12,933 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-13 21:40:12,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-13 21:40:13,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-13 21:40:13,136 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-13 21:40:13,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:40:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash 311256133, now seen corresponding path program 3 times [2025-03-13 21:40:13,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:40:13,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322217027] [2025-03-13 21:40:13,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:40:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:40:13,318 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes. [2025-03-13 21:40:20,224 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) and asserted 31 of 31 statements. [2025-03-13 21:40:20,225 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2025-03-13 21:40:20,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:40:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-13 21:40:20,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:40:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322217027] [2025-03-13 21:40:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322217027] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-13 21:40:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748429880] [2025-03-13 21:40:20,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:40:20,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-13 21:40:20,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:40:20,493 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-13 21:40:20,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-13 21:40:20,853 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 13 equivalence classes.