./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b87483e693fd72a28f6c7edd484e610e6e0dbb17679c8092f6f9c9cd35d4acca --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:19:23,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:19:23,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:19:23,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:19:23,194 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:19:23,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:19:23,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:19:23,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:19:23,226 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:19:23,226 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:19:23,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:19:23,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:19:23,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:19:23,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:19:23,231 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:19:23,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:19:23,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:19:23,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:19:23,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:19:23,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:19:23,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:19:23,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:19:23,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:19:23,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:19:23,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:19:23,239 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:19:23,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:19:23,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:19:23,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:19:23,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:19:23,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:19:23,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:19:23,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:19:23,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:19:23,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:19:23,242 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:19:23,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:19:23,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:19:23,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:19:23,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:19:23,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:19:23,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:19:23,244 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b87483e693fd72a28f6c7edd484e610e6e0dbb17679c8092f6f9c9cd35d4acca [2024-10-11 14:19:23,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:19:23,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:19:23,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:19:23,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:19:23,518 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:19:23,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.i [2024-10-11 14:19:24,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:19:25,212 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:19:25,213 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.i [2024-10-11 14:19:25,226 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/412141c65/91e1bf9752b842bb8829b265c7284e5d/FLAGfc1fbc31e [2024-10-11 14:19:25,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/412141c65/91e1bf9752b842bb8829b265c7284e5d [2024-10-11 14:19:25,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:19:25,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:19:25,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:19:25,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:19:25,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:19:25,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a335955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25, skipping insertion in model container [2024-10-11 14:19:25,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,305 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:19:25,558 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.i[945,958] [2024-10-11 14:19:25,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:19:25,726 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:19:25,738 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.i[945,958] [2024-10-11 14:19:25,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:19:25,825 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:19:25,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25 WrapperNode [2024-10-11 14:19:25,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:19:25,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:19:25,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:19:25,828 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:19:25,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,875 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-10-11 14:19:25,875 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:19:25,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:19:25,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:19:25,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:19:25,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,909 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 14:19:25,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:19:25,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:19:25,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:19:25,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:19:25,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (1/1) ... [2024-10-11 14:19:25,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:19:25,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:19:25,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:19:25,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:19:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:19:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:19:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-11 14:19:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-11 14:19:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-11 14:19:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-11 14:19:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-11 14:19:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-11 14:19:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:19:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:19:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:19:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:19:26,004 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:19:26,114 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:19:26,115 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:19:26,239 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:19:26,240 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:19:26,323 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:19:26,324 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:19:26,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:19:26 BoogieIcfgContainer [2024-10-11 14:19:26,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:19:26,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:19:26,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:19:26,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:19:26,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:19:25" (1/3) ... [2024-10-11 14:19:26,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2f08f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:19:26, skipping insertion in model container [2024-10-11 14:19:26,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:25" (2/3) ... [2024-10-11 14:19:26,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2f08f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:19:26, skipping insertion in model container [2024-10-11 14:19:26,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:19:26" (3/3) ... [2024-10-11 14:19:26,331 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2024-10-11 14:19:26,346 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:19:26,346 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:19:26,346 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:19:26,397 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:19:26,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2024-10-11 14:19:26,469 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-10-11 14:19:26,470 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:19:26,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-10-11 14:19:26,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2024-10-11 14:19:26,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-10-11 14:19:26,488 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:19:26,498 INFO L333 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;@a0884a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:19:26,498 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:19:26,518 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:19:26,519 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2024-10-11 14:19:26,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:19:26,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:26,520 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:19:26,521 INFO L396 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)] === [2024-10-11 14:19:26,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:26,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1691510903, now seen corresponding path program 1 times [2024-10-11 14:19:26,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:26,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164407966] [2024-10-11 14:19:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:26,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:19:27,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:27,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164407966] [2024-10-11 14:19:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164407966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:27,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:27,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:19:27,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615316281] [2024-10-11 14:19:27,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:27,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:19:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:19:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:19:27,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-10-11 14:19:27,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-11 14:19:27,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:27,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-10-11 14:19:27,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:27,377 INFO L124 PetriNetUnfolderBase]: 291/592 cut-off events. [2024-10-11 14:19:27,377 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 14:19:27,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 592 events. 291/592 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3220 event pairs, 58 based on Foata normal form. 27/609 useless extension candidates. Maximal degree in co-relation 1087. Up to 236 conditions per place. [2024-10-11 14:19:27,393 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 25 selfloop transitions, 5 changer transitions 1/48 dead transitions. [2024-10-11 14:19:27,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 173 flow [2024-10-11 14:19:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:19:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:19:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-11 14:19:27,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-11 14:19:27,409 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 4 states and 117 transitions. [2024-10-11 14:19:27,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 173 flow [2024-10-11 14:19:27,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:19:27,416 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 106 flow [2024-10-11 14:19:27,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-10-11 14:19:27,423 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-10-11 14:19:27,424 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 106 flow [2024-10-11 14:19:27,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-10-11 14:19:27,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:27,425 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:19:27,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:19:27,425 INFO L396 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)] === [2024-10-11 14:19:27,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:27,426 INFO L85 PathProgramCache]: Analyzing trace with hash -81870312, now seen corresponding path program 1 times [2024-10-11 14:19:27,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:27,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31157535] [2024-10-11 14:19:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:19:27,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:27,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31157535] [2024-10-11 14:19:27,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31157535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:27,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:27,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:19:27,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131532179] [2024-10-11 14:19:27,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:27,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:19:27,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:27,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:19:27,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:19:27,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-10-11 14:19:27,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-10-11 14:19:27,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:27,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-10-11 14:19:27,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:27,816 INFO L124 PetriNetUnfolderBase]: 249/507 cut-off events. [2024-10-11 14:19:27,816 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-10-11 14:19:27,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 507 events. 249/507 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2517 event pairs, 15 based on Foata normal form. 26/525 useless extension candidates. Maximal degree in co-relation 1173. Up to 188 conditions per place. [2024-10-11 14:19:27,825 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 31 selfloop transitions, 8 changer transitions 1/57 dead transitions. [2024-10-11 14:19:27,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 249 flow [2024-10-11 14:19:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:19:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:19:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-10-11 14:19:27,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7538461538461538 [2024-10-11 14:19:27,828 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 106 flow. Second operand 5 states and 147 transitions. [2024-10-11 14:19:27,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 249 flow [2024-10-11 14:19:27,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 239 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 14:19:27,831 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 146 flow [2024-10-11 14:19:27,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-10-11 14:19:27,832 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-10-11 14:19:27,832 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 146 flow [2024-10-11 14:19:27,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-10-11 14:19:27,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:27,833 INFO L204 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, 1, 1] [2024-10-11 14:19:27,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:19:27,833 INFO L396 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)] === [2024-10-11 14:19:27,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:27,834 INFO L85 PathProgramCache]: Analyzing trace with hash -679659613, now seen corresponding path program 1 times [2024-10-11 14:19:27,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:27,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509737510] [2024-10-11 14:19:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:27,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:19:28,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:28,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509737510] [2024-10-11 14:19:28,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509737510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:28,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:28,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:19:28,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946709239] [2024-10-11 14:19:28,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:28,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:19:28,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:28,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:19:28,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:19:28,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-10-11 14:19:28,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-11 14:19:28,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:28,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-10-11 14:19:28,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:28,198 INFO L124 PetriNetUnfolderBase]: 174/342 cut-off events. [2024-10-11 14:19:28,198 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-10-11 14:19:28,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 342 events. 174/342 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1289 event pairs, 6 based on Foata normal form. 20/354 useless extension candidates. Maximal degree in co-relation 927. Up to 108 conditions per place. [2024-10-11 14:19:28,201 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 29 selfloop transitions, 11 changer transitions 1/58 dead transitions. [2024-10-11 14:19:28,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 276 flow [2024-10-11 14:19:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:19:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:19:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-10-11 14:19:28,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-11 14:19:28,206 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 146 flow. Second operand 6 states and 169 transitions. [2024-10-11 14:19:28,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 276 flow [2024-10-11 14:19:28,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 251 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-11 14:19:28,210 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 160 flow [2024-10-11 14:19:28,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-10-11 14:19:28,211 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-10-11 14:19:28,212 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 160 flow [2024-10-11 14:19:28,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-11 14:19:28,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:28,213 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:19:28,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:19:28,213 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 14:19:28,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash -726187898, now seen corresponding path program 1 times [2024-10-11 14:19:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:28,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118160552] [2024-10-11 14:19:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:28,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:19:28,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:28,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118160552] [2024-10-11 14:19:28,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118160552] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:28,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:28,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:19:28,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810640806] [2024-10-11 14:19:28,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:28,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:19:28,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:28,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:19:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:19:28,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-10-11 14:19:28,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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) [2024-10-11 14:19:28,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:28,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-10-11 14:19:28,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:28,686 INFO L124 PetriNetUnfolderBase]: 541/1084 cut-off events. [2024-10-11 14:19:28,686 INFO L125 PetriNetUnfolderBase]: For 549/559 co-relation queries the response was YES. [2024-10-11 14:19:28,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2534 conditions, 1084 events. 541/1084 cut-off events. For 549/559 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6310 event pairs, 143 based on Foata normal form. 16/1063 useless extension candidates. Maximal degree in co-relation 2519. Up to 282 conditions per place. [2024-10-11 14:19:28,692 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2024-10-11 14:19:28,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 352 flow [2024-10-11 14:19:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:19:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:19:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-10-11 14:19:28,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6011396011396012 [2024-10-11 14:19:28,694 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 160 flow. Second operand 9 states and 211 transitions. [2024-10-11 14:19:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 352 flow [2024-10-11 14:19:28,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 288 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-11 14:19:28,704 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-10-11 14:19:28,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-10-11 14:19:28,706 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-10-11 14:19:28,707 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-10-11 14:19:28,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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) [2024-10-11 14:19:28,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-11 14:19:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-11 14:19:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-11 14:19:28,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-11 14:19:28,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:19:28,711 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-11 14:19:28,718 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:19:28,718 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:19:28,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:19:28 BasicIcfg [2024-10-11 14:19:28,723 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:19:28,724 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:19:28,724 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:19:28,724 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:19:28,724 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:19:26" (3/4) ... [2024-10-11 14:19:28,726 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:19:28,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-11 14:19:28,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-11 14:19:28,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-11 14:19:28,733 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-10-11 14:19:28,733 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-11 14:19:28,733 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 14:19:28,733 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 14:19:28,822 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:19:28,823 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:19:28,823 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:19:28,824 INFO L158 Benchmark]: Toolchain (without parser) took 3577.63ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 99.7MB in the beginning and 103.8MB in the end (delta: -4.1MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2024-10-11 14:19:28,824 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 70.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:19:28,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.63ms. Allocated memory is still 165.7MB. Free memory was 99.7MB in the beginning and 122.1MB in the end (delta: -22.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 14:19:28,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.70ms. Allocated memory is still 165.7MB. Free memory was 122.1MB in the beginning and 120.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:19:28,827 INFO L158 Benchmark]: Boogie Preprocessor took 43.22ms. Allocated memory is still 165.7MB. Free memory was 120.0MB in the beginning and 117.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:19:28,827 INFO L158 Benchmark]: RCFGBuilder took 404.74ms. Allocated memory is still 165.7MB. Free memory was 117.9MB in the beginning and 99.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-11 14:19:28,827 INFO L158 Benchmark]: TraceAbstraction took 2397.16ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 98.3MB in the beginning and 108.0MB in the end (delta: -9.6MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2024-10-11 14:19:28,828 INFO L158 Benchmark]: Witness Printer took 99.21ms. Allocated memory is still 203.4MB. Free memory was 108.0MB in the beginning and 103.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:19:28,829 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 96.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 70.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.63ms. Allocated memory is still 165.7MB. Free memory was 99.7MB in the beginning and 122.1MB in the end (delta: -22.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.70ms. Allocated memory is still 165.7MB. Free memory was 122.1MB in the beginning and 120.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.22ms. Allocated memory is still 165.7MB. Free memory was 120.0MB in the beginning and 117.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 404.74ms. Allocated memory is still 165.7MB. Free memory was 117.9MB in the beginning and 99.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2397.16ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 98.3MB in the beginning and 108.0MB in the end (delta: -9.6MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * Witness Printer took 99.21ms. Allocated memory is still 203.4MB. Free memory was 108.0MB in the beginning and 103.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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, 64 locations, 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: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 274 IncrementalHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 16 mSDtfsCounter, 274 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=3, InterpolantAutomatonStates: 24, 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, 0.9s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 14:19:28,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE