/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:43:44,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:43:44,347 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:43:44,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:43:44,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:43:44,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:43:44,366 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:43:44,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:43:44,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:43:44,366 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:43:44,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:43:44,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:43:44,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:43:44,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:43:44,367 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:43:44,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:43:44,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:43:44,367 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:43:44,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:43:44,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:43:44,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:43:44,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:43:44,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:43:44,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:43:44,372 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:43:44,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:43:44,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:43:44,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:43:44,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:43:44,373 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:43:44,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:43:44,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:43:44,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:43:44,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:43:44,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:43:44,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:43:44,374 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:43:44,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:43:44,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:43:44,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:43:44,626 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:43:44,628 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:43:44,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2025-04-13 19:43:45,945 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d065047c8/b28ace39c6614cfa95e29dcf46fb1da9/FLAG5ae5c154d [2025-04-13 19:43:46,229 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:43:46,230 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i [2025-04-13 19:43:46,247 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d065047c8/b28ace39c6614cfa95e29dcf46fb1da9/FLAG5ae5c154d [2025-04-13 19:43:46,995 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d065047c8/b28ace39c6614cfa95e29dcf46fb1da9 [2025-04-13 19:43:46,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:43:46,998 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:43:46,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:43:46,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:43:47,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:43:47,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:43:46" (1/1) ... [2025-04-13 19:43:47,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1589d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47, skipping insertion in model container [2025-04-13 19:43:47,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:43:46" (1/1) ... [2025-04-13 19:43:47,031 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:43:47,430 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2025-04-13 19:43:47,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:43:47,479 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:43:47,530 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2025-04-13 19:43:47,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:43:47,589 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:43:47,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47 WrapperNode [2025-04-13 19:43:47,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:43:47,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:43:47,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:43:47,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:43:47,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,630 INFO L138 Inliner]: procedures = 279, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 246 [2025-04-13 19:43:47,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:43:47,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:43:47,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:43:47,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:43:47,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,666 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 2, 5, 2, 5, 14]. 47 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 0, 5, 0]. The 10 writes are split as follows [0, 1, 0, 1, 0, 8]. [2025-04-13 19:43:47,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,674 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,676 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:43:47,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:43:47,687 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:43:47,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:43:47,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (1/1) ... [2025-04-13 19:43:47,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:43:47,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:43:47,714 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) [2025-04-13 19:43:47,716 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 [2025-04-13 19:43:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 19:43:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-13 19:43:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-13 19:43:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-04-13 19:43:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-04-13 19:43:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2025-04-13 19:43:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2025-04-13 19:43:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 19:43:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-04-13 19:43:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:43:47,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:43:47,738 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:43:47,865 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:43:47,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:43:48,186 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:43:48,187 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:43:48,187 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:43:48,719 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:43:48,722 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:43:48,722 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:43:48,752 WARN L179 LargeBlockEncoding]: Complex 3:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:43:48,755 WARN L179 LargeBlockEncoding]: Complex 3:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:43:48,758 WARN L179 LargeBlockEncoding]: Complex 4:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:43:48,761 WARN L179 LargeBlockEncoding]: Complex 2:4 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:43:48,765 INFO L313 CfgBuilder]: Removed 6 assume(true) statements. [2025-04-13 19:43:48,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:43:48 BoogieIcfgContainer [2025-04-13 19:43:48,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:43:48,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:43:48,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:43:48,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:43:48,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:43:46" (1/3) ... [2025-04-13 19:43:48,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d663238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:43:48, skipping insertion in model container [2025-04-13 19:43:48,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:43:47" (2/3) ... [2025-04-13 19:43:48,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d663238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:43:48, skipping insertion in model container [2025-04-13 19:43:48,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:43:48" (3/3) ... [2025-04-13 19:43:48,772 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2025-04-13 19:43:48,783 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:43:48,784 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_81-list_racing.i that has 3 procedures, 37 locations, 64 edges, 1 initial locations, 10 loop locations, and 1 error locations. [2025-04-13 19:43:48,784 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:43:48,841 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 19:43:48,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 68 transitions, 156 flow [2025-04-13 19:43:48,898 INFO L116 PetriNetUnfolderBase]: 49/124 cut-off events. [2025-04-13 19:43:48,900 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-13 19:43:48,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 124 events. 49/124 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 389 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 63. Up to 14 conditions per place. [2025-04-13 19:43:48,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 68 transitions, 156 flow [2025-04-13 19:43:48,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 60 transitions, 134 flow [2025-04-13 19:43:48,920 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:43:48,930 INFO L340 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;@13955e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:43:48,930 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:43:48,938 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:43:48,939 INFO L116 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-04-13 19:43:48,939 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:43:48,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:43:48,940 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 19:43:48,940 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:43:48,944 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:43:48,945 INFO L85 PathProgramCache]: Analyzing trace with hash 22488799, now seen corresponding path program 1 times [2025-04-13 19:43:48,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:43:48,950 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404900935] [2025-04-13 19:43:48,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:43:48,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:43:49,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:43:49,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:43:49,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:49,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:43:49,104 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:43:49,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:43:49,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:43:49,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:49,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:43:49,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:43:49,185 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:43:49,185 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 19:43:49,187 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 19:43:49,187 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 19:43:49,187 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 19:43:49,187 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:43:49,187 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:43:49,191 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:43:49,191 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 19:43:49,263 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-13 19:43:49,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 115 transitions, 274 flow [2025-04-13 19:43:49,354 INFO L116 PetriNetUnfolderBase]: 184/416 cut-off events. [2025-04-13 19:43:49,354 INFO L117 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2025-04-13 19:43:49,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 416 events. 184/416 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1954 event pairs, 2 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 279. Up to 39 conditions per place. [2025-04-13 19:43:49,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 115 transitions, 274 flow [2025-04-13 19:43:49,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 109 transitions, 262 flow [2025-04-13 19:43:49,371 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:43:49,371 INFO L340 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;@13955e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:43:49,373 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 19:43:49,385 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:43:49,385 INFO L116 PetriNetUnfolderBase]: 1/35 cut-off events. [2025-04-13 19:43:49,385 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-13 19:43:49,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:43:49,386 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 19:43:49,386 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:43:49,386 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:43:49,387 INFO L85 PathProgramCache]: Analyzing trace with hash -777210104, now seen corresponding path program 1 times [2025-04-13 19:43:49,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:43:49,387 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750538087] [2025-04-13 19:43:49,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:43:49,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:43:49,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:43:49,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:43:49,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:49,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:43:49,481 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:43:49,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:43:49,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:43:49,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:49,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:43:49,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:43:49,531 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:43:49,531 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 19:43:49,531 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 19:43:49,531 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-13 19:43:49,531 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 19:43:49,531 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 19:43:49,531 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:43:49,532 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:43:49,532 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:43:49,532 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 19:43:49,609 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2025-04-13 19:43:49,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 162 transitions, 396 flow [2025-04-13 19:43:49,781 INFO L116 PetriNetUnfolderBase]: 621/1234 cut-off events. [2025-04-13 19:43:49,781 INFO L117 PetriNetUnfolderBase]: For 419/513 co-relation queries the response was YES. [2025-04-13 19:43:49,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 1234 events. 621/1234 cut-off events. For 419/513 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6905 event pairs, 64 based on Foata normal form. 0/747 useless extension candidates. Maximal degree in co-relation 909. Up to 192 conditions per place. [2025-04-13 19:43:49,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 162 transitions, 396 flow [2025-04-13 19:43:49,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 156 transitions, 384 flow [2025-04-13 19:43:49,814 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:43:49,814 INFO L340 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;@13955e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:43:49,814 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 19:43:49,827 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:43:49,827 INFO L116 PetriNetUnfolderBase]: 3/68 cut-off events. [2025-04-13 19:43:49,827 INFO L117 PetriNetUnfolderBase]: For 25/37 co-relation queries the response was YES. [2025-04-13 19:43:49,827 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:43:49,827 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2025-04-13 19:43:49,827 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 19:43:49,828 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:43:49,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1421890044, now seen corresponding path program 1 times [2025-04-13 19:43:49,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:43:49,828 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151918469] [2025-04-13 19:43:49,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:43:49,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:43:49,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:43:49,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:43:49,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:49,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:43:49,915 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:43:49,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:43:49,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:43:49,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:49,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:43:49,957 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:43:49,957 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:43:49,957 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-04-13 19:43:49,957 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-04-13 19:43:49,957 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-04-13 19:43:49,957 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-04-13 19:43:49,957 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-13 19:43:49,958 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 19:43:49,958 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:43:49,958 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:43:49,958 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:43:49,958 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-04-13 19:43:50,042 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2025-04-13 19:43:50,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 209 transitions, 522 flow [2025-04-13 19:43:50,514 INFO L116 PetriNetUnfolderBase]: 2440/4198 cut-off events. [2025-04-13 19:43:50,515 INFO L117 PetriNetUnfolderBase]: For 2144/2364 co-relation queries the response was YES. [2025-04-13 19:43:50,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6339 conditions, 4198 events. 2440/4198 cut-off events. For 2144/2364 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 24959 event pairs, 626 based on Foata normal form. 0/2935 useless extension candidates. Maximal degree in co-relation 3194. Up to 1024 conditions per place. [2025-04-13 19:43:50,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 209 transitions, 522 flow [2025-04-13 19:43:50,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 203 transitions, 510 flow [2025-04-13 19:43:50,614 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:43:50,615 INFO L340 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;@13955e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:43:50,615 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 19:43:50,627 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:43:50,627 INFO L116 PetriNetUnfolderBase]: 14/129 cut-off events. [2025-04-13 19:43:50,627 INFO L117 PetriNetUnfolderBase]: For 73/93 co-relation queries the response was YES. [2025-04-13 19:43:50,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:43:50,628 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2025-04-13 19:43:50,628 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 19:43:50,628 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:43:50,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1323616653, now seen corresponding path program 1 times [2025-04-13 19:43:50,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:43:50,628 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889625810] [2025-04-13 19:43:50,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:43:50,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:43:50,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:43:50,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:43:50,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:50,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:43:50,734 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:43:50,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:43:50,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:43:50,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:50,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:43:50,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:43:50,774 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:43:50,774 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2025-04-13 19:43:50,775 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-04-13 19:43:50,775 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-04-13 19:43:50,775 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2025-04-13 19:43:50,775 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2025-04-13 19:43:50,775 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-04-13 19:43:50,775 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-04-13 19:43:50,775 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:43:50,776 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:43:50,776 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:43:50,776 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-04-13 19:43:50,860 INFO L143 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2025-04-13 19:43:50,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 256 transitions, 652 flow [2025-04-13 19:43:52,990 INFO L116 PetriNetUnfolderBase]: 10825/16652 cut-off events. [2025-04-13 19:43:52,990 INFO L117 PetriNetUnfolderBase]: For 10450/10828 co-relation queries the response was YES. [2025-04-13 19:43:53,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27043 conditions, 16652 events. 10825/16652 cut-off events. For 10450/10828 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 102436 event pairs, 4296 based on Foata normal form. 0/12841 useless extension candidates. Maximal degree in co-relation 12969. Up to 5120 conditions per place. [2025-04-13 19:43:53,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 256 transitions, 652 flow [2025-04-13 19:43:53,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 250 transitions, 640 flow [2025-04-13 19:43:53,543 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:43:53,544 INFO L340 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;@13955e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:43:53,544 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-04-13 19:43:53,559 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:43:53,559 INFO L116 PetriNetUnfolderBase]: 21/152 cut-off events. [2025-04-13 19:43:53,560 INFO L117 PetriNetUnfolderBase]: For 87/119 co-relation queries the response was YES. [2025-04-13 19:43:53,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:43:53,560 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:43:53,560 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-04-13 19:43:53,560 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:43:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash 673755240, now seen corresponding path program 1 times [2025-04-13 19:43:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:43:53,560 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137620820] [2025-04-13 19:43:53,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:43:53,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:43:53,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 19:43:53,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 19:43:53,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:43:53,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:43:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:43:53,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:43:53,608 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137620820] [2025-04-13 19:43:53,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137620820] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:43:53,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:43:53,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:43:53,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396736244] [2025-04-13 19:43:53,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:43:53,613 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:43:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:43:53,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:43:53,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:43:53,631 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 256 [2025-04-13 19:43:53,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 250 transitions, 640 flow. Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2025-04-13 19:43:53,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:43:53,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 256 [2025-04-13 19:43:53,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand