/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/pthread/reorder_5.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:13:29,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:13:29,792 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 19:13:29,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:13:29,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:13:29,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:13:29,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:13:29,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:13:29,816 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:13:29,816 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:13:29,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:13:29,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:13:29,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:13:29,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:13:29,817 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:13:29,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:13:29,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:13:29,818 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:13:29,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:13:29,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:13:29,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:13:29,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:13:29,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:13:29,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:13:29,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:13:29,820 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 19:13:30,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:13:30,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:13:30,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:13:30,037 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:13:30,039 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:13:30,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/reorder_5.i [2025-04-13 19:13:31,379 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ec289e46/d7af4702936f4f23ac141c716d4ccf1f/FLAGc4f373083 [2025-04-13 19:13:31,646 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:13:31,647 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_5.i [2025-04-13 19:13:31,663 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ec289e46/d7af4702936f4f23ac141c716d4ccf1f/FLAGc4f373083 [2025-04-13 19:13:32,381 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ec289e46/d7af4702936f4f23ac141c716d4ccf1f [2025-04-13 19:13:32,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:13:32,384 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:13:32,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:13:32,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:13:32,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:13:32,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:32,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc9e10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32, skipping insertion in model container [2025-04-13 19:13:32,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:32,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:13:32,824 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_5.i[59755,59768] [2025-04-13 19:13:32,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:13:32,835 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:13:32,894 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/reorder_5.i[59755,59768] [2025-04-13 19:13:32,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:13:32,939 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:13:32,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32 WrapperNode [2025-04-13 19:13:32,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:13:32,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:13:32,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:13:32,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:13:32,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:32,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:32,982 INFO L138 Inliner]: procedures = 371, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 109 [2025-04-13 19:13:32,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:13:32,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:13:32,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:13:32,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:13:32,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:32,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:32,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:33,011 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-04-13 19:13:33,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:33,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:33,020 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:33,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:33,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:33,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:33,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:33,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:13:33,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:13:33,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:13:33,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:13:33,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (1/1) ... [2025-04-13 19:13:33,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:13:33,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:13:33,060 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 19:13:33,064 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 19:13:33,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-04-13 19:13:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-04-13 19:13:33,080 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:13:33,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:13:33,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:13:33,082 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 19:13:33,194 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:13:33,195 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:13:33,350 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:13:33,351 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:13:33,351 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:13:33,519 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:13:33,528 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:13:33,533 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:13:33,540 WARN L179 LargeBlockEncoding]: Complex 3:4 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:13:33,569 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:13:33,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:13:33 BoogieIcfgContainer [2025-04-13 19:13:33,569 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:13:33,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:13:33,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:13:33,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:13:33,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:13:32" (1/3) ... [2025-04-13 19:13:33,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c25d576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:13:33, skipping insertion in model container [2025-04-13 19:13:33,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:13:32" (2/3) ... [2025-04-13 19:13:33,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c25d576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:13:33, skipping insertion in model container [2025-04-13 19:13:33,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:13:33" (3/3) ... [2025-04-13 19:13:33,575 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2025-04-13 19:13:33,584 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:13:33,586 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_5.i that has 3 procedures, 21 locations, 32 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-13 19:13:33,586 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:13:33,631 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 19:13:33,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 36 transitions, 92 flow [2025-04-13 19:13:33,690 INFO L116 PetriNetUnfolderBase]: 17/61 cut-off events. [2025-04-13 19:13:33,692 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-13 19:13:33,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 61 events. 17/61 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 195 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 31. Up to 10 conditions per place. [2025-04-13 19:13:33,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 36 transitions, 92 flow [2025-04-13 19:13:33,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 28 transitions, 70 flow [2025-04-13 19:13:33,703 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:13:33,711 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;@74120fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:13:33,711 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:13:33,716 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:13:33,716 INFO L116 PetriNetUnfolderBase]: 0/13 cut-off events. [2025-04-13 19:13:33,716 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:13:33,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:13:33,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-04-13 19:13:33,716 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:13:33,719 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:13:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash 11744655, now seen corresponding path program 1 times [2025-04-13 19:13:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:13:33,725 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303385650] [2025-04-13 19:13:33,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:13:33,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:13:33,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:13:33,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:13:33,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:13:33,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:13:33,823 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:13:33,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 19:13:33,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 19:13:33,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:13:33,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:13:33,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:13:33,860 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:13:33,861 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-04-13 19:13:33,862 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 19:13:33,862 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 19:13:33,862 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 19:13:33,862 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:13:33,863 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:13:33,865 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:13:33,865 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 19:13:33,897 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-13 19:13:33,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 51 transitions, 146 flow [2025-04-13 19:13:33,959 INFO L116 PetriNetUnfolderBase]: 88/228 cut-off events. [2025-04-13 19:13:33,960 INFO L117 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2025-04-13 19:13:33,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 228 events. 88/228 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1069 event pairs, 2 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 154. Up to 39 conditions per place. [2025-04-13 19:13:33,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 51 transitions, 146 flow [2025-04-13 19:13:33,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 45 transitions, 134 flow [2025-04-13 19:13:33,963 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:13:33,963 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;@74120fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:13:33,963 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-13 19:13:33,970 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:13:33,971 INFO L116 PetriNetUnfolderBase]: 0/33 cut-off events. [2025-04-13 19:13:33,971 INFO L117 PetriNetUnfolderBase]: For 7/9 co-relation queries the response was YES. [2025-04-13 19:13:33,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:13:33,971 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-04-13 19:13:33,971 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-13 19:13:33,971 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:13:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash -140365975, now seen corresponding path program 1 times [2025-04-13 19:13:33,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:13:33,971 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353605923] [2025-04-13 19:13:33,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:13:33,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:13:33,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:13:34,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:13:34,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:13:34,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:13:34,008 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:13:34,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:13:34,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:13:34,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:13:34,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:13:34,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:13:34,047 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:13:34,047 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-04-13 19:13:34,047 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-04-13 19:13:34,047 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-13 19:13:34,047 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-04-13 19:13:34,047 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-04-13 19:13:34,047 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:13:34,047 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:13:34,048 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:13:34,048 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-04-13 19:13:34,088 INFO L143 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2025-04-13 19:13:34,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 66 transitions, 204 flow [2025-04-13 19:13:34,175 INFO L116 PetriNetUnfolderBase]: 429/859 cut-off events. [2025-04-13 19:13:34,175 INFO L117 PetriNetUnfolderBase]: For 419/479 co-relation queries the response was YES. [2025-04-13 19:13:34,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 859 events. 429/859 cut-off events. For 419/479 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4478 event pairs, 64 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 628. Up to 192 conditions per place. [2025-04-13 19:13:34,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 66 transitions, 204 flow [2025-04-13 19:13:34,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 60 transitions, 192 flow [2025-04-13 19:13:34,186 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:13:34,187 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;@74120fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:13:34,187 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 19:13:34,193 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:13:34,194 INFO L116 PetriNetUnfolderBase]: 0/40 cut-off events. [2025-04-13 19:13:34,194 INFO L117 PetriNetUnfolderBase]: For 11/13 co-relation queries the response was YES. [2025-04-13 19:13:34,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:13:34,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-13 19:13:34,194 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 19:13:34,195 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:13:34,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1794557769, now seen corresponding path program 1 times [2025-04-13 19:13:34,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:13:34,195 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971437372] [2025-04-13 19:13:34,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:13:34,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:13:34,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:13:34,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:13:34,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:13:34,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:13:34,387 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 19:13:34,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:13:34,388 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971437372] [2025-04-13 19:13:34,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971437372] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:13:34,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:13:34,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:13:34,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074973089] [2025-04-13 19:13:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:13:34,393 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:13:34,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:13:34,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:13:34,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:13:34,463 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 66 [2025-04-13 19:13:34,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 19:13:34,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:13:34,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 66 [2025-04-13 19:13:34,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:13:56,847 INFO L116 PetriNetUnfolderBase]: 387087/487029 cut-off events. [2025-04-13 19:13:56,847 INFO L117 PetriNetUnfolderBase]: For 105253/105253 co-relation queries the response was YES. [2025-04-13 19:13:57,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031468 conditions, 487029 events. 387087/487029 cut-off events. For 105253/105253 co-relation queries the response was YES. Maximal size of possible extension queue 25546. Compared 3469174 event pairs, 126711 based on Foata normal form. 0/360853 useless extension candidates. Maximal degree in co-relation 792269. Up to 323284 conditions per place. [2025-04-13 19:13:59,498 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 195 selfloop transitions, 20 changer transitions 0/227 dead transitions. [2025-04-13 19:13:59,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 227 transitions, 1151 flow [2025-04-13 19:13:59,499 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 19:13:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-13 19:13:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 314 transitions. [2025-04-13 19:13:59,511 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5946969696969697 [2025-04-13 19:13:59,512 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 192 flow. Second operand 8 states and 314 transitions. [2025-04-13 19:13:59,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 227 transitions, 1151 flow [2025-04-13 19:14:01,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 227 transitions, 1151 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-13 19:14:01,129 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 340 flow [2025-04-13 19:14:01,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=340, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2025-04-13 19:14:01,133 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2025-04-13 19:14:01,133 INFO L485 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 340 flow [2025-04-13 19:14:01,133 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 19:14:01,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:01,134 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2025-04-13 19:14:01,134 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:14:01,134 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 19:14:01,134 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash 387932054, now seen corresponding path program 1 times [2025-04-13 19:14:01,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:01,134 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749864032] [2025-04-13 19:14:01,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:01,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:01,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:14:01,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:14:01,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:01,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:14:01,167 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 19:14:01,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 19:14:01,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 19:14:01,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:01,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 19:14:01,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 19:14:01,186 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 19:14:01,186 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2025-04-13 19:14:01,186 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-04-13 19:14:01,186 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-04-13 19:14:01,186 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-04-13 19:14:01,186 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-13 19:14:01,186 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 19:14:01,186 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:14:01,186 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-13 19:14:01,187 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 19:14:01,187 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-04-13 19:14:01,215 INFO L143 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2025-04-13 19:14:01,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 81 transitions, 266 flow [2025-04-13 19:14:01,376 INFO L116 PetriNetUnfolderBase]: 2120/3574 cut-off events. [2025-04-13 19:14:01,376 INFO L117 PetriNetUnfolderBase]: For 2144/2222 co-relation queries the response was YES. [2025-04-13 19:14:01,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 3574 events. 2120/3574 cut-off events. For 2144/2222 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 20359 event pairs, 381 based on Foata normal form. 0/2665 useless extension candidates. Maximal degree in co-relation 2695. Up to 1024 conditions per place. [2025-04-13 19:14:01,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 81 transitions, 266 flow [2025-04-13 19:14:01,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 75 transitions, 254 flow [2025-04-13 19:14:01,400 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:14:01,401 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;@74120fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:14:01,401 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-13 19:14:01,404 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:14:01,404 INFO L116 PetriNetUnfolderBase]: 0/40 cut-off events. [2025-04-13 19:14:01,404 INFO L117 PetriNetUnfolderBase]: For 11/13 co-relation queries the response was YES. [2025-04-13 19:14:01,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:14:01,404 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-13 19:14:01,404 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-13 19:14:01,405 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:14:01,405 INFO L85 PathProgramCache]: Analyzing trace with hash -153496397, now seen corresponding path program 1 times [2025-04-13 19:14:01,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:14:01,405 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134488838] [2025-04-13 19:14:01,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:14:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:14:01,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 19:14:01,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 19:14:01,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:14:01,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:14:01,495 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 19:14:01,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:14:01,495 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134488838] [2025-04-13 19:14:01,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134488838] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:14:01,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:14:01,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 19:14:01,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732580456] [2025-04-13 19:14:01,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:14:01,496 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:14:01,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:14:01,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:14:01,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:14:01,540 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 81 [2025-04-13 19:14:01,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 19:14:01,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:14:01,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 81 [2025-04-13 19:14:01,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand