/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_20-callback_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:41:21,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:41:21,913 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 19:41:21,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:41:21,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:41:21,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:41:21,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:41:21,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:41:21,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:41:21,944 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:41:21,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:41:21,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:41:21,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:41:21,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:41:21,946 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:41:21,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:41:21,947 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:41:21,948 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:41:21,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:41:21,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:41:21,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:41:21,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:41:21,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:41:21,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:41:21,949 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 19:41:22,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:41:22,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:41:22,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:41:22,178 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:41:22,178 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:41:22,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2025-04-13 19:41:23,520 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9323d8af/b13249edf1ac4a1aaccaaa8472a29332/FLAGe13d35c1d [2025-04-13 19:41:23,751 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:41:23,752 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2025-04-13 19:41:23,766 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9323d8af/b13249edf1ac4a1aaccaaa8472a29332/FLAGe13d35c1d [2025-04-13 19:41:24,571 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9323d8af/b13249edf1ac4a1aaccaaa8472a29332 [2025-04-13 19:41:24,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:41:24,575 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:41:24,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:41:24,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:41:24,579 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:41:24,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:24,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e762a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24, skipping insertion in model container [2025-04-13 19:41:24,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:24,611 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:41:24,895 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_20-callback_racefree.i[30212,30225] [2025-04-13 19:41:24,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:41:24,929 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:41:24,960 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_20-callback_racefree.i[30212,30225] [2025-04-13 19:41:24,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:41:24,993 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:41:24,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24 WrapperNode [2025-04-13 19:41:24,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:41:24,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:41:24,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:41:24,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:41:24,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,031 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 182 [2025-04-13 19:41:25,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:41:25,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:41:25,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:41:25,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:41:25,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,053 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2025-04-13 19:41:25,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,058 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:41:25,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:41:25,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:41:25,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:41:25,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (1/1) ... [2025-04-13 19:41:25,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:41:25,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:41:25,093 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 19:41:25,097 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 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:41:25,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 19:41:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-04-13 19:41:25,113 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-04-13 19:41:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 19:41:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:41:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:41:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:41:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 19:41:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:41:25,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:41:25,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:41:25,114 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 19:41:25,212 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:41:25,215 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:41:25,467 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:41:25,467 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:41:25,467 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:41:25,896 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:41:25,904 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:41:25,904 WARN L179 LargeBlockEncoding]: Complex 4:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:41:25,915 WARN L179 LargeBlockEncoding]: Complex 3:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:41:25,917 WARN L179 LargeBlockEncoding]: Complex 5:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:41:25,924 INFO L313 CfgBuilder]: Removed 4 assume(true) statements. [2025-04-13 19:41:25,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:41:25 BoogieIcfgContainer [2025-04-13 19:41:25,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:41:25,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:41:25,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:41:25,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:41:25,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:41:24" (1/3) ... [2025-04-13 19:41:25,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6400dab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:41:25, skipping insertion in model container [2025-04-13 19:41:25,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:41:24" (2/3) ... [2025-04-13 19:41:25,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6400dab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:41:25, skipping insertion in model container [2025-04-13 19:41:25,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:41:25" (3/3) ... [2025-04-13 19:41:25,959 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2025-04-13 19:41:25,970 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:41:25,972 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_20-callback_racefree.i that has 2 procedures, 29 locations, 49 edges, 1 initial locations, 7 loop locations, and 1 error locations. [2025-04-13 19:41:25,973 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:41:26,008 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-13 19:41:26,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 54 transitions, 115 flow [2025-04-13 19:41:26,074 INFO L116 PetriNetUnfolderBase]: 36/81 cut-off events. [2025-04-13 19:41:26,076 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-13 19:41:26,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 36/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 204 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 44. Up to 8 conditions per place. [2025-04-13 19:41:26,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 54 transitions, 115 flow [2025-04-13 19:41:26,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 47 transitions, 98 flow [2025-04-13 19:41:26,089 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:41:26,101 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;@654cb4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:41:26,101 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 19:41:26,109 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:41:26,109 INFO L116 PetriNetUnfolderBase]: 4/12 cut-off events. [2025-04-13 19:41:26,109 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:41:26,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:41:26,110 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 19:41:26,110 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 19:41:26,114 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:41:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash 17198078, now seen corresponding path program 1 times [2025-04-13 19:41:26,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:41:26,119 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121625115] [2025-04-13 19:41:26,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:41:26,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:41:26,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:41:26,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:41:26,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:41:26,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:41:26,259 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:41:26,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:41:26,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:41:26,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:41:26,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:41:26,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:41:26,316 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:41:26,317 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-04-13 19:41:26,319 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-04-13 19:41:26,319 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-04-13 19:41:26,320 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:41:26,320 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:41:26,324 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:41:26,324 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 19:41:26,343 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 19:41:26,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 68 transitions, 152 flow [2025-04-13 19:41:26,368 INFO L116 PetriNetUnfolderBase]: 57/133 cut-off events. [2025-04-13 19:41:26,369 INFO L117 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2025-04-13 19:41:26,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 133 events. 57/133 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 422 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 85. Up to 12 conditions per place. [2025-04-13 19:41:26,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 68 transitions, 152 flow [2025-04-13 19:41:26,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 64 transitions, 144 flow [2025-04-13 19:41:26,372 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:41:26,372 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;@654cb4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:41:26,372 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:41:26,385 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:41:26,385 INFO L116 PetriNetUnfolderBase]: 8/30 cut-off events. [2025-04-13 19:41:26,385 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-13 19:41:26,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:41:26,385 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 19:41:26,385 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-04-13 19:41:26,386 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:41:26,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1370270859, now seen corresponding path program 1 times [2025-04-13 19:41:26,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:41:26,386 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973258938] [2025-04-13 19:41:26,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:41:26,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:41:26,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:41:26,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:41:26,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:41:26,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:41:26,443 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:41:26,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:41:26,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:41:26,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:41:26,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:41:26,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:41:26,470 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:41:26,470 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 19:41:26,470 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 19:41:26,470 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2025-04-13 19:41:26,470 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 19:41:26,470 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:41:26,473 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:41:26,474 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:41:26,474 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 19:41:26,509 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-13 19:41:26,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 82 transitions, 191 flow [2025-04-13 19:41:26,543 INFO L116 PetriNetUnfolderBase]: 81/194 cut-off events. [2025-04-13 19:41:26,544 INFO L117 PetriNetUnfolderBase]: For 19/27 co-relation queries the response was YES. [2025-04-13 19:41:26,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 194 events. 81/194 cut-off events. For 19/27 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 686 event pairs, 1 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 144. Up to 19 conditions per place. [2025-04-13 19:41:26,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 82 transitions, 191 flow [2025-04-13 19:41:26,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 78 transitions, 183 flow [2025-04-13 19:41:26,548 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:41:26,550 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;@654cb4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:41:26,550 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 19:41:26,558 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:41:26,559 INFO L116 PetriNetUnfolderBase]: 15/44 cut-off events. [2025-04-13 19:41:26,559 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-13 19:41:26,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:41:26,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:41:26,559 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-13 19:41:26,560 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:41:26,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2106096155, now seen corresponding path program 1 times [2025-04-13 19:41:26,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:41:26,560 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119492720] [2025-04-13 19:41:26,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:41:26,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:41:26,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 19:41:26,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 19:41:26,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:41:26,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:41:26,773 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 19:41:26,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:41:26,773 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119492720] [2025-04-13 19:41:26,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119492720] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:41:26,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:41:26,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:41:26,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280107964] [2025-04-13 19:41:26,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:41:26,780 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:41:26,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:41:26,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:41:26,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:41:26,800 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 82 [2025-04-13 19:41:26,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 78 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 19:41:26,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:41:26,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 82 [2025-04-13 19:41:26,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:41:31,348 INFO L116 PetriNetUnfolderBase]: 64038/88704 cut-off events. [2025-04-13 19:41:31,348 INFO L117 PetriNetUnfolderBase]: For 1248/1248 co-relation queries the response was YES. [2025-04-13 19:41:31,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178242 conditions, 88704 events. 64038/88704 cut-off events. For 1248/1248 co-relation queries the response was YES. Maximal size of possible extension queue 2076. Compared 589401 event pairs, 25001 based on Foata normal form. 0/76798 useless extension candidates. Maximal degree in co-relation 97338. Up to 45637 conditions per place. [2025-04-13 19:41:31,713 INFO L140 encePairwiseOnDemand]: 55/82 looper letters, 90 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2025-04-13 19:41:31,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 434 flow [2025-04-13 19:41:31,714 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 19:41:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 19:41:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2025-04-13 19:41:31,723 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2025-04-13 19:41:31,724 INFO L175 Difference]: Start difference. First operand has 59 places, 78 transitions, 183 flow. Second operand 3 states and 154 transitions. [2025-04-13 19:41:31,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 434 flow [2025-04-13 19:41:31,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:41:31,750 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 197 flow [2025-04-13 19:41:31,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2025-04-13 19:41:31,755 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2025-04-13 19:41:31,755 INFO L485 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 197 flow [2025-04-13 19:41:31,755 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 19:41:31,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:41:31,755 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2025-04-13 19:41:31,755 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:41:31,756 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2025-04-13 19:41:31,756 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:41:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -585178959, now seen corresponding path program 1 times [2025-04-13 19:41:31,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:41:31,756 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654965265] [2025-04-13 19:41:31,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:41:31,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:41:31,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:41:31,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:41:31,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:41:31,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:41:31,784 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:41:31,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:41:31,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:41:31,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:41:31,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:41:31,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:41:31,816 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:41:31,816 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 19:41:31,817 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 19:41:31,817 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-04-13 19:41:31,817 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 19:41:31,817 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 19:41:31,817 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:41:31,817 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-13 19:41:31,817 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:41:31,817 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-04-13 19:41:31,845 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 19:41:31,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 96 transitions, 232 flow [2025-04-13 19:41:31,874 INFO L116 PetriNetUnfolderBase]: 113/275 cut-off events. [2025-04-13 19:41:31,875 INFO L117 PetriNetUnfolderBase]: For 48/62 co-relation queries the response was YES. [2025-04-13 19:41:31,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 275 events. 113/275 cut-off events. For 48/62 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1039 event pairs, 6 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 218. Up to 32 conditions per place. [2025-04-13 19:41:31,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 96 transitions, 232 flow [2025-04-13 19:41:31,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 92 transitions, 224 flow [2025-04-13 19:41:31,880 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:41:31,881 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;@654cb4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:41:31,881 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 19:41:31,886 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:41:31,886 INFO L116 PetriNetUnfolderBase]: 19/59 cut-off events. [2025-04-13 19:41:31,887 INFO L117 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-04-13 19:41:31,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:41:31,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:41:31,887 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 19:41:31,887 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:41:31,887 INFO L85 PathProgramCache]: Analyzing trace with hash 307149563, now seen corresponding path program 1 times [2025-04-13 19:41:31,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:41:31,887 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935997252] [2025-04-13 19:41:31,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:41:31,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:41:31,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-13 19:41:31,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-13 19:41:31,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:41:31,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:41:31,992 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 19:41:31,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:41:31,993 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935997252] [2025-04-13 19:41:31,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935997252] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:41:31,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:41:31,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 19:41:31,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481581682] [2025-04-13 19:41:31,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:41:31,993 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 19:41:31,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:41:31,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 19:41:31,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 19:41:31,994 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 96 [2025-04-13 19:41:31,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 92 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 19:41:31,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:41:31,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 96 [2025-04-13 19:41:31,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand