/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_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/ldv-races/race-2_3-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 00:11:16,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 00:11:16,742 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 [2025-04-14 00:11:16,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 00:11:16,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 00:11:16,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 00:11:16,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 00:11:16,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 00:11:16,770 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 00:11:16,770 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 00:11:16,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 00:11:16,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 00:11:16,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 00:11:16,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 00:11:16,772 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:11:16,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 00:11:16,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:11:16,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 00:11:16,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 00:11:16,773 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 00:11:16,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 00:11:16,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 00:11:16,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 00:11:16,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 00:11:16,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 00:11:16,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 00:11:16,773 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 00:11:17,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 00:11:17,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 00:11:17,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 00:11:17,049 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 00:11:17,049 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 00:11:17,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_3-container_of.i [2025-04-14 00:11:18,412 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc9f4ee6/17fd3f7127bb4fbbb43c98b18bbe9a46/FLAG2a4427f05 [2025-04-14 00:11:18,735 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 00:11:18,736 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_3-container_of.i [2025-04-14 00:11:18,762 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc9f4ee6/17fd3f7127bb4fbbb43c98b18bbe9a46/FLAG2a4427f05 [2025-04-14 00:11:19,423 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc9f4ee6/17fd3f7127bb4fbbb43c98b18bbe9a46 [2025-04-14 00:11:19,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 00:11:19,427 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 00:11:19,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 00:11:19,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 00:11:19,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 00:11:19,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:19,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db461fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19, skipping insertion in model container [2025-04-14 00:11:19,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:19,474 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 00:11:19,777 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_3-container_of.i[186287,186300] [2025-04-14 00:11:19,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:11:19,842 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 00:11:19,903 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_3-container_of.i[186287,186300] [2025-04-14 00:11:19,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 00:11:19,956 INFO L204 MainTranslator]: Completed translation [2025-04-14 00:11:19,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19 WrapperNode [2025-04-14 00:11:19,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 00:11:19,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 00:11:19,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 00:11:19,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 00:11:19,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:19,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,007 INFO L138 Inliner]: procedures = 248, calls = 55, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 136 [2025-04-14 00:11:20,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 00:11:20,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 00:11:20,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 00:11:20,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 00:11:20,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,022 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,049 INFO L175 MemorySlicer]: Split 19 memory accesses to 3 slices as follows [2, 15, 2]. 79 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 10 writes are split as follows [0, 8, 2]. [2025-04-14 00:11:20,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,065 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 00:11:20,090 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 00:11:20,090 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 00:11:20,090 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 00:11:20,091 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (1/1) ... [2025-04-14 00:11:20,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 00:11:20,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 00:11:20,116 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) [2025-04-14 00:11:20,118 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 [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2025-04-14 00:11:20,138 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-14 00:11:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-14 00:11:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 00:11:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-14 00:11:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-14 00:11:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-14 00:11:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 00:11:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 00:11:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-14 00:11:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 00:11:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 00:11:20,140 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 00:11:20,379 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 00:11:20,382 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 00:11:20,629 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 00:11:20,630 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 00:11:20,630 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 00:11:20,840 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:20,866 WARN L179 LargeBlockEncoding]: Complex 3:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 00:11:20,898 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 00:11:20,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:11:20 BoogieIcfgContainer [2025-04-14 00:11:20,899 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 00:11:20,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 00:11:20,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 00:11:20,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 00:11:20,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 12:11:19" (1/3) ... [2025-04-14 00:11:20,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa30922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:11:20, skipping insertion in model container [2025-04-14 00:11:20,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 12:11:19" (2/3) ... [2025-04-14 00:11:20,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa30922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 12:11:20, skipping insertion in model container [2025-04-14 00:11:20,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 12:11:20" (3/3) ... [2025-04-14 00:11:20,908 INFO L128 eAbstractionObserver]: Analyzing ICFG race-2_3-container_of.i [2025-04-14 00:11:20,918 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 00:11:20,919 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-2_3-container_of.i that has 2 procedures, 30 locations, 35 edges, 1 initial locations, 0 loop locations, and 6 error locations. [2025-04-14 00:11:20,920 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 00:11:20,976 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-14 00:11:21,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 45 transitions, 104 flow [2025-04-14 00:11:21,059 INFO L116 PetriNetUnfolderBase]: 3/43 cut-off events. [2025-04-14 00:11:21,061 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-14 00:11:21,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 3/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 84 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 16. Up to 3 conditions per place. [2025-04-14 00:11:21,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 45 transitions, 104 flow [2025-04-14 00:11:21,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 39 transitions, 90 flow [2025-04-14 00:11:21,077 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 00:11:21,089 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;@46e4800e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 00:11:21,089 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-04-14 00:11:21,093 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 00:11:21,093 INFO L116 PetriNetUnfolderBase]: 0/1 cut-off events. [2025-04-14 00:11:21,094 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-14 00:11:21,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:11:21,094 INFO L206 CegarLoopForPetriNet]: trace histogram [1] [2025-04-14 00:11:21,095 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-04-14 00:11:21,099 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:11:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash 434, now seen corresponding path program 1 times [2025-04-14 00:11:21,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:11:21,107 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920986496] [2025-04-14 00:11:21,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:11:21,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:11:21,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-14 00:11:21,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-14 00:11:21,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:21,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:11:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:11:21,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:11:21,542 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920986496] [2025-04-14 00:11:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920986496] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:11:21,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:11:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2025-04-14 00:11:21,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570744574] [2025-04-14 00:11:21,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:11:21,549 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-14 00:11:21,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:11:21,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-14 00:11:21,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-14 00:11:21,571 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 45 [2025-04-14 00:11:21,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 90 flow. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2025-04-14 00:11:21,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:11:21,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 45 [2025-04-14 00:11:21,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:11:21,997 INFO L116 PetriNetUnfolderBase]: 973/1599 cut-off events. [2025-04-14 00:11:21,997 INFO L117 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2025-04-14 00:11:22,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3215 conditions, 1599 events. 973/1599 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7319 event pairs, 973 based on Foata normal form. 0/1462 useless extension candidates. Maximal degree in co-relation 3130. Up to 1586 conditions per place. [2025-04-14 00:11:22,014 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 31 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2025-04-14 00:11:22,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 140 flow [2025-04-14 00:11:22,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 00:11:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-14 00:11:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2025-04-14 00:11:22,024 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-04-14 00:11:22,026 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 90 flow. Second operand 2 states and 45 transitions. [2025-04-14 00:11:22,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 140 flow [2025-04-14 00:11:22,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 132 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-14 00:11:22,036 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 70 flow [2025-04-14 00:11:22,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2025-04-14 00:11:22,044 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2025-04-14 00:11:22,044 INFO L485 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 70 flow [2025-04-14 00:11:22,044 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2025-04-14 00:11:22,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:11:22,044 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:11:22,045 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 00:11:22,045 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-04-14 00:11:22,045 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:11:22,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1978204142, now seen corresponding path program 1 times [2025-04-14 00:11:22,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:11:22,045 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127123145] [2025-04-14 00:11:22,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:11:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:11:22,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-14 00:11:22,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-14 00:11:22,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:22,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:11:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:11:22,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:11:22,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127123145] [2025-04-14 00:11:22,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127123145] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:11:22,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:11:22,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:11:22,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231958557] [2025-04-14 00:11:22,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:11:22,284 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:11:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:11:22,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:11:22,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:11:22,285 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 45 [2025-04-14 00:11:22,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-04-14 00:11:22,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:11:22,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 45 [2025-04-14 00:11:22,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:11:22,606 INFO L116 PetriNetUnfolderBase]: 1425/2322 cut-off events. [2025-04-14 00:11:22,607 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 00:11:22,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4637 conditions, 2322 events. 1425/2322 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11876 event pairs, 604 based on Foata normal form. 0/2138 useless extension candidates. Maximal degree in co-relation 4634. Up to 1529 conditions per place. [2025-04-14 00:11:22,622 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 43 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2025-04-14 00:11:22,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 208 flow [2025-04-14 00:11:22,623 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:11:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:11:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2025-04-14 00:11:22,623 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-04-14 00:11:22,624 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 70 flow. Second operand 3 states and 63 transitions. [2025-04-14 00:11:22,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 208 flow [2025-04-14 00:11:22,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-14 00:11:22,626 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 124 flow [2025-04-14 00:11:22,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2025-04-14 00:11:22,627 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2025-04-14 00:11:22,629 INFO L485 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 124 flow [2025-04-14 00:11:22,630 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2025-04-14 00:11:22,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:11:22,630 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:11:22,630 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 00:11:22,630 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-04-14 00:11:22,631 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:11:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1194786698, now seen corresponding path program 1 times [2025-04-14 00:11:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:11:22,631 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964512933] [2025-04-14 00:11:22,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:11:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:11:22,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-14 00:11:22,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-14 00:11:22,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:22,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 00:11:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 00:11:22,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 00:11:22,818 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964512933] [2025-04-14 00:11:22,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964512933] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 00:11:22,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 00:11:22,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 00:11:22,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580357636] [2025-04-14 00:11:22,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 00:11:22,818 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 00:11:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 00:11:22,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 00:11:22,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 00:11:22,819 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 45 [2025-04-14 00:11:22,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2025-04-14 00:11:22,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 00:11:22,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 45 [2025-04-14 00:11:22,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 00:11:23,124 INFO L116 PetriNetUnfolderBase]: 1783/2886 cut-off events. [2025-04-14 00:11:23,124 INFO L117 PetriNetUnfolderBase]: For 994/994 co-relation queries the response was YES. [2025-04-14 00:11:23,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7230 conditions, 2886 events. 1783/2886 cut-off events. For 994/994 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 15068 event pairs, 854 based on Foata normal form. 0/2771 useless extension candidates. Maximal degree in co-relation 7225. Up to 1962 conditions per place. [2025-04-14 00:11:23,139 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 47 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2025-04-14 00:11:23,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 318 flow [2025-04-14 00:11:23,140 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 00:11:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 00:11:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2025-04-14 00:11:23,141 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2025-04-14 00:11:23,141 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 124 flow. Second operand 3 states and 62 transitions. [2025-04-14 00:11:23,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 318 flow [2025-04-14 00:11:23,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 61 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-14 00:11:23,148 INFO L231 Difference]: Finished difference. Result has 43 places, 49 transitions, 218 flow [2025-04-14 00:11:23,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=43, PETRI_TRANSITIONS=49} [2025-04-14 00:11:23,148 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2025-04-14 00:11:23,148 INFO L485 AbstractCegarLoop]: Abstraction has has 43 places, 49 transitions, 218 flow [2025-04-14 00:11:23,149 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2025-04-14 00:11:23,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 00:11:23,149 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 00:11:23,149 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 00:11:23,149 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2025-04-14 00:11:23,149 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 00:11:23,149 INFO L85 PathProgramCache]: Analyzing trace with hash 698274776, now seen corresponding path program 1 times [2025-04-14 00:11:23,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 00:11:23,150 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455915013] [2025-04-14 00:11:23,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 00:11:23,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 00:11:23,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-14 00:11:23,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-14 00:11:23,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:23,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:11:23,190 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 00:11:23,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-14 00:11:23,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-14 00:11:23,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 00:11:23,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 00:11:23,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 00:11:23,237 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 00:11:23,237 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2025-04-14 00:11:23,238 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2025-04-14 00:11:23,239 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2025-04-14 00:11:23,239 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2025-04-14 00:11:23,239 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2025-04-14 00:11:23,239 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2025-04-14 00:11:23,239 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2025-04-14 00:11:23,239 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2025-04-14 00:11:23,239 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 00:11:23,239 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-14 00:11:23,279 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 00:11:23,279 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 00:11:23,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 12:11:23 BasicIcfg [2025-04-14 00:11:23,284 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 00:11:23,285 INFO L158 Benchmark]: Toolchain (without parser) took 3857.97ms. Allocated memory was 125.8MB in the beginning and 306.2MB in the end (delta: 180.4MB). Free memory was 85.7MB in the beginning and 223.7MB in the end (delta: -138.0MB). Peak memory consumption was 41.2MB. Max. memory is 8.0GB. [2025-04-14 00:11:23,285 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 159.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:11:23,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.38ms. Allocated memory is still 125.8MB. Free memory was 85.0MB in the beginning and 51.1MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2025-04-14 00:11:23,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.87ms. Allocated memory is still 125.8MB. Free memory was 51.1MB in the beginning and 48.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:11:23,286 INFO L158 Benchmark]: Boogie Preprocessor took 78.08ms. Allocated memory is still 125.8MB. Free memory was 48.3MB in the beginning and 44.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 00:11:23,286 INFO L158 Benchmark]: IcfgBuilder took 809.11ms. Allocated memory is still 125.8MB. Free memory was 44.8MB in the beginning and 42.4MB in the end (delta: 2.4MB). Peak memory consumption was 33.1MB. Max. memory is 8.0GB. [2025-04-14 00:11:23,288 INFO L158 Benchmark]: TraceAbstraction took 2382.86ms. Allocated memory was 125.8MB in the beginning and 306.2MB in the end (delta: 180.4MB). Free memory was 41.7MB in the beginning and 223.7MB in the end (delta: -182.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 00:11:23,289 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 159.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 529.38ms. Allocated memory is still 125.8MB. Free memory was 85.0MB in the beginning and 51.1MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.87ms. Allocated memory is still 125.8MB. Free memory was 51.1MB in the beginning and 48.3MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 78.08ms. Allocated memory is still 125.8MB. Free memory was 48.3MB in the beginning and 44.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 809.11ms. Allocated memory is still 125.8MB. Free memory was 44.8MB in the beginning and 42.4MB in the end (delta: 2.4MB). Peak memory consumption was 33.1MB. Max. memory is 8.0GB. * TraceAbstraction took 2382.86ms. Allocated memory was 125.8MB in the beginning and 306.2MB in the end (delta: 180.4MB). Free memory was 41.7MB in the beginning and 223.7MB in the end (delta: -182.0MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3887]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L3888] 0 pthread_t t1,t2; [L3962] CALL, EXPR 0 my_drv_init() [L3956] 0 return 0; [L3962] RET, EXPR 0 my_drv_init() [L3962] 0 int ret = my_drv_init(); [L3963] COND TRUE 0 ret==0 [L3964] 0 int probe_ret; [L3965] 0 struct my_data data; [L3966] CALL 0 my_drv_probe(&data) [L3919] 0 struct device *d = &data->dev; [L3923] 0 data->shared.a = 0 [L3924] 0 data->shared.b = 0 [L3925] 0 int res = __VERIFIER_nondet_int(); [L3926] COND FALSE 0 !(\read(res)) [L3929] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [\at(arg, Pre)={4:24}, \at(data, Pre)={4:0}, d={4:24}, data={4:0}, res=0, t1=-1, t2=0] [L3902] 1 struct device *dev = (struct device*)arg; [L3903] 1 struct my_data *data; [L3904] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L3904] 1 { const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );} [L3904] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - __builtin_offsetof (struct my_data, dev) );}) [L3930] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [\at(arg, Pre)={4:24}, \at(data, Pre)={4:0}, arg={4:24}, d={4:24}, data={4:0}, data={4:0}, dev={4:24}, res=0, t1=-1, t2=0] [L3933] 0 data->shared.a = 3 VAL [\at(arg, Pre)={4:24}, arg={4:24}, data={4:0}, dev={4:24}, t1=-1, t2=0] [L3907] 1 data->shared.a = 1 VAL [\at(arg, Pre)={4:24}, arg={4:24}, data={4:0}, dev={4:24}, t1=-1, t2=0] [L3936] 0 data->shared.b = 3 VAL [\at(arg, Pre)={4:24}, arg={4:24}, data={4:0}, dev={4:24}, t1=-1, t2=0] [L3939] EXPR 0 data->shared.a [L3939] CALL 0 ldv_assert(data->shared.a==3) [L3887] COND TRUE 0 !expression [L3887] 0 reach_error() VAL [\at(arg, Pre)={4:24}, \at(expression, Pre)=0, arg={4:24}, data={4:0}, dev={4:24}, expression=0, t1=-1, t2=0] - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3887]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 3929]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 3930]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 50 locations, 57 edges, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 187 IncrementalHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=3, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-14 00:11:23,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...