/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/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 20:41:23,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 20:41:23,495 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 20:41:23,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 20:41:23,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 20:41:23,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 20:41:23,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 20:41:23,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 20:41:23,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 20:41:23,514 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 20:41:23,514 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 20:41:23,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 20:41:23,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 20:41:23,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 20:41:23,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 20:41:23,516 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:41:23,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:41:23,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 20:41:23,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 20:41:23,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 20:41:23,517 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 20:41:23,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 20:41:23,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 20:41:23,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 20:41:23,733 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 20:41:23,733 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 20:41:23,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2025-04-13 20:41:25,005 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c62e036/9c591cd5954f4d6bb7e8b5cb6fe4d74f/FLAG1b26d16a8 [2025-04-13 20:41:25,207 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 20:41:25,207 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2025-04-13 20:41:25,212 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c62e036/9c591cd5954f4d6bb7e8b5cb6fe4d74f/FLAG1b26d16a8 [2025-04-13 20:41:26,054 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44c62e036/9c591cd5954f4d6bb7e8b5cb6fe4d74f [2025-04-13 20:41:26,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 20:41:26,057 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 20:41:26,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 20:41:26,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 20:41:26,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 20:41:26,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35392757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26, skipping insertion in model container [2025-04-13 20:41:26,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,075 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 20:41:26,236 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2025-04-13 20:41:26,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:41:26,249 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 20:41:26,282 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2025-04-13 20:41:26,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 20:41:26,299 INFO L204 MainTranslator]: Completed translation [2025-04-13 20:41:26,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26 WrapperNode [2025-04-13 20:41:26,300 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 20:41:26,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 20:41:26,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 20:41:26,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 20:41:26,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,327 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2025-04-13 20:41:26,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 20:41:26,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 20:41:26,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 20:41:26,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 20:41:26,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,349 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-13 20:41:26,352 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,355 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,360 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 20:41:26,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 20:41:26,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 20:41:26,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 20:41:26,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (1/1) ... [2025-04-13 20:41:26,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 20:41:26,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 20:41:26,395 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 20:41:26,400 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 20:41:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 20:41:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 20:41:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 20:41:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 20:41:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 20:41:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 20:41:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 20:41:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 20:41:26,415 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 20:41:26,490 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 20:41:26,491 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 20:41:26,649 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 20:41:26,649 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 20:41:26,649 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 20:41:26,790 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 20:41:26,792 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 20:41:26,795 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 20:41:26,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:41:26 BoogieIcfgContainer [2025-04-13 20:41:26,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 20:41:26,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 20:41:26,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 20:41:26,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 20:41:26,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 08:41:26" (1/3) ... [2025-04-13 20:41:26,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410022ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:41:26, skipping insertion in model container [2025-04-13 20:41:26,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 08:41:26" (2/3) ... [2025-04-13 20:41:26,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410022ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 08:41:26, skipping insertion in model container [2025-04-13 20:41:26,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 08:41:26" (3/3) ... [2025-04-13 20:41:26,801 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2025-04-13 20:41:26,816 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 20:41:26,817 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-min-le-max.wvr.c that has 4 procedures, 26 locations, 27 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 20:41:26,818 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 20:41:26,859 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-13 20:41:26,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 81 flow [2025-04-13 20:41:26,908 INFO L116 PetriNetUnfolderBase]: 5/27 cut-off events. [2025-04-13 20:41:26,909 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-13 20:41:26,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 27 events. 5/27 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-04-13 20:41:26,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 30 transitions, 81 flow [2025-04-13 20:41:26,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 26 transitions, 70 flow [2025-04-13 20:41:26,924 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 20:41:26,932 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;@25fc05e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 20:41:26,932 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 20:41:26,959 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 20:41:26,959 INFO L116 PetriNetUnfolderBase]: 5/25 cut-off events. [2025-04-13 20:41:26,959 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-13 20:41:26,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:41:26,960 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:41:26,960 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 20:41:26,964 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:41:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash -252658618, now seen corresponding path program 1 times [2025-04-13 20:41:26,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:41:26,971 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335058634] [2025-04-13 20:41:26,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:41:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:41:27,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 20:41:27,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 20:41:27,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:41:27,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:41:27,166 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 20:41:27,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:41:27,166 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335058634] [2025-04-13 20:41:27,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335058634] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:41:27,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:41:27,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 20:41:27,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169675869] [2025-04-13 20:41:27,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:41:27,173 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:41:27,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:41:27,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:41:27,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:41:27,192 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2025-04-13 20:41:27,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 20:41:27,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:41:27,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2025-04-13 20:41:27,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:41:27,290 INFO L116 PetriNetUnfolderBase]: 215/357 cut-off events. [2025-04-13 20:41:27,290 INFO L117 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2025-04-13 20:41:27,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 357 events. 215/357 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1219 event pairs, 162 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 672. Up to 331 conditions per place. [2025-04-13 20:41:27,297 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 21 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2025-04-13 20:41:27,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 110 flow [2025-04-13 20:41:27,298 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:41:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:41:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2025-04-13 20:41:27,304 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2025-04-13 20:41:27,305 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 70 flow. Second operand 3 states and 39 transitions. [2025-04-13 20:41:27,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 110 flow [2025-04-13 20:41:27,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-13 20:41:27,310 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 56 flow [2025-04-13 20:41:27,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2025-04-13 20:41:27,314 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2025-04-13 20:41:27,314 INFO L485 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 56 flow [2025-04-13 20:41:27,314 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 20:41:27,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:41:27,315 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:41:27,315 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 20:41:27,315 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 20:41:27,316 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:41:27,316 INFO L85 PathProgramCache]: Analyzing trace with hash 852122776, now seen corresponding path program 1 times [2025-04-13 20:41:27,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:41:27,316 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75752102] [2025-04-13 20:41:27,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:41:27,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:41:27,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 20:41:27,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 20:41:27,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:41:27,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:41:27,495 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 20:41:27,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:41:27,495 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75752102] [2025-04-13 20:41:27,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75752102] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:41:27,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:41:27,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 20:41:27,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716680325] [2025-04-13 20:41:27,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:41:27,496 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 20:41:27,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:41:27,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 20:41:27,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 20:41:27,497 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2025-04-13 20:41:27,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 20:41:27,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:41:27,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2025-04-13 20:41:27,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:41:27,583 INFO L116 PetriNetUnfolderBase]: 215/358 cut-off events. [2025-04-13 20:41:27,584 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 20:41:27,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 358 events. 215/358 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1217 event pairs, 162 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 705. Up to 334 conditions per place. [2025-04-13 20:41:27,587 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 21 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2025-04-13 20:41:27,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 104 flow [2025-04-13 20:41:27,587 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 20:41:27,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-13 20:41:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2025-04-13 20:41:27,589 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2025-04-13 20:41:27,589 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 56 flow. Second operand 3 states and 39 transitions. [2025-04-13 20:41:27,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 104 flow [2025-04-13 20:41:27,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-13 20:41:27,590 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 67 flow [2025-04-13 20:41:27,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2025-04-13 20:41:27,591 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2025-04-13 20:41:27,591 INFO L485 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 67 flow [2025-04-13 20:41:27,591 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 20:41:27,591 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 20:41:27,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 20:41:27,592 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 20:41:27,592 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 20:41:27,593 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 20:41:27,594 INFO L85 PathProgramCache]: Analyzing trace with hash 685002678, now seen corresponding path program 1 times [2025-04-13 20:41:27,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 20:41:27,594 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096962470] [2025-04-13 20:41:27,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 20:41:27,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 20:41:27,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-13 20:41:27,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 20:41:27,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 20:41:27,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 20:41:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 20:41:27,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 20:41:27,949 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096962470] [2025-04-13 20:41:27,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096962470] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 20:41:27,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 20:41:27,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 20:41:27,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594926286] [2025-04-13 20:41:27,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 20:41:27,950 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 20:41:27,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 20:41:27,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 20:41:27,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 20:41:27,952 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2025-04-13 20:41:27,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 20:41:27,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 20:41:27,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2025-04-13 20:41:27,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 20:41:28,098 INFO L116 PetriNetUnfolderBase]: 357/542 cut-off events. [2025-04-13 20:41:28,099 INFO L117 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-04-13 20:41:28,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 542 events. 357/542 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1788 event pairs, 25 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 1104. Up to 255 conditions per place. [2025-04-13 20:41:28,109 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2025-04-13 20:41:28,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 51 transitions, 223 flow [2025-04-13 20:41:28,111 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 20:41:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 20:41:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2025-04-13 20:41:28,111 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2025-04-13 20:41:28,111 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 67 flow. Second operand 6 states and 74 transitions. [2025-04-13 20:41:28,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 51 transitions, 223 flow [2025-04-13 20:41:28,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 51 transitions, 219 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-13 20:41:28,112 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2025-04-13 20:41:28,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2025-04-13 20:41:28,113 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2025-04-13 20:41:28,113 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2025-04-13 20:41:28,113 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 20:41:28,116 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 20:41:28,117 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 20:41:28,117 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 20:41:28,117 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 20:41:28,117 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 20:41:28,117 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-13 20:41:28,119 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 20:41:28,119 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 20:41:28,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 08:41:28 BasicIcfg [2025-04-13 20:41:28,126 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 20:41:28,126 INFO L158 Benchmark]: Toolchain (without parser) took 2069.66ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 102.3MB in the end (delta: -3.2MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2025-04-13 20:41:28,127 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 20:41:28,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.73ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 84.3MB in the end (delta: 14.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 20:41:28,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.00ms. Allocated memory is still 142.6MB. Free memory was 84.3MB in the beginning and 82.3MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 20:41:28,127 INFO L158 Benchmark]: Boogie Preprocessor took 40.83ms. Allocated memory is still 142.6MB. Free memory was 82.3MB in the beginning and 80.1MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 20:41:28,127 INFO L158 Benchmark]: RCFGBuilder took 425.97ms. Allocated memory is still 142.6MB. Free memory was 80.1MB in the beginning and 39.3MB in the end (delta: 40.8MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2025-04-13 20:41:28,128 INFO L158 Benchmark]: TraceAbstraction took 1329.33ms. Allocated memory is still 142.6MB. Free memory was 38.7MB in the beginning and 102.3MB in the end (delta: -63.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 20:41:28,128 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.73ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 84.3MB in the end (delta: 14.8MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.00ms. Allocated memory is still 142.6MB. Free memory was 84.3MB in the beginning and 82.3MB in the end (delta: 1.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.83ms. Allocated memory is still 142.6MB. Free memory was 82.3MB in the beginning and 80.1MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 425.97ms. Allocated memory is still 142.6MB. Free memory was 80.1MB in the beginning and 39.3MB in the end (delta: 40.8MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1329.33ms. Allocated memory is still 142.6MB. Free memory was 38.7MB in the beginning and 102.3MB in the end (delta: -63.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 41 locations, 49 edges, 4 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: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 20:41:28,145 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...