./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/safe034_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/safe034_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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:19:50,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:19:51,048 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:19:51,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:19:51,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:19:51,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:19:51,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:19:51,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:19:51,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:19:51,077 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:19:51,077 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:19:51,077 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:19:51,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:19:51,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:19:51,078 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:19:51,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:19:51,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:19:51,079 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:19:51,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:19:51,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:19:51,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:19:51,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:19:51,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:19:51,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:19:51,081 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:19:51,082 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:19:51,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:19:51,082 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:19:51,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:19:51,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:19:51,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:19:51,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:19:51,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:19:51,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:19:51,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:19:51,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:19:51,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:19:51,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:19:51,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:19:51,085 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:19:51,085 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:19:51,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:19:51,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2024-10-11 14:19:51,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:19:51,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:19:51,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:19:51,284 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:19:51,284 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:19:51,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2024-10-11 14:19:52,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:19:52,881 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:19:52,881 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2024-10-11 14:19:52,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/618346abe/f40c097c338a48318dd31b3880eaab3f/FLAG63212f198 [2024-10-11 14:19:52,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/618346abe/f40c097c338a48318dd31b3880eaab3f [2024-10-11 14:19:52,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:19:52,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:19:52,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:19:52,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:19:52,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:19:52,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:19:52" (1/1) ... [2024-10-11 14:19:52,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b00121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:52, skipping insertion in model container [2024-10-11 14:19:52,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:19:52" (1/1) ... [2024-10-11 14:19:52,969 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:19:53,140 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/safe034_tso.i[945,958] [2024-10-11 14:19:53,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:19:53,271 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:19:53,281 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/safe034_tso.i[945,958] [2024-10-11 14:19:53,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:19:53,357 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:19:53,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53 WrapperNode [2024-10-11 14:19:53,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:19:53,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:19:53,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:19:53,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:19:53,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,404 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-10-11 14:19:53,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:19:53,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:19:53,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:19:53,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:19:53,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,457 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 14:19:53,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,462 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:19:53,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:19:53,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:19:53,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:19:53,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (1/1) ... [2024-10-11 14:19:53,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:19:53,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:19:53,530 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 14:19:53,538 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 14:19:53,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:19:53,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:19:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-11 14:19:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-11 14:19:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-11 14:19:53,576 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-11 14:19:53,576 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-11 14:19:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-11 14:19:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:19:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:19:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:19:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:19:53,579 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 14:19:53,695 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:19:53,697 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:19:53,794 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:19:53,794 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:19:53,858 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:19:53,859 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:19:53,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:19:53 BoogieIcfgContainer [2024-10-11 14:19:53,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:19:53,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:19:53,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:19:53,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:19:53,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:19:52" (1/3) ... [2024-10-11 14:19:53,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4223798f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:19:53, skipping insertion in model container [2024-10-11 14:19:53,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:19:53" (2/3) ... [2024-10-11 14:19:53,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4223798f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:19:53, skipping insertion in model container [2024-10-11 14:19:53,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:19:53" (3/3) ... [2024-10-11 14:19:53,871 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2024-10-11 14:19:53,885 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:19:53,886 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:19:53,886 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:19:53,924 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:19:53,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 92 flow [2024-10-11 14:19:53,981 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-11 14:19:53,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:19:53,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-11 14:19:53,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 92 flow [2024-10-11 14:19:53,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-10-11 14:19:54,001 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:19:54,007 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;@61a6aa77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:19:54,008 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:19:54,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:19:54,024 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2024-10-11 14:19:54,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:19:54,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:54,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:19:54,026 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 14:19:54,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:54,031 INFO L85 PathProgramCache]: Analyzing trace with hash 313596758, now seen corresponding path program 1 times [2024-10-11 14:19:54,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141788520] [2024-10-11 14:19:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:54,450 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 14:19:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141788520] [2024-10-11 14:19:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141788520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:54,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:19:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248145432] [2024-10-11 14:19:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:54,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:19:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:19:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:19:54,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2024-10-11 14:19:54,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 14:19:54,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:54,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2024-10-11 14:19:54,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:54,828 INFO L124 PetriNetUnfolderBase]: 832/1663 cut-off events. [2024-10-11 14:19:54,829 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 14:19:54,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 1663 events. 832/1663 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11600 event pairs, 237 based on Foata normal form. 58/1702 useless extension candidates. Maximal degree in co-relation 3011. Up to 684 conditions per place. [2024-10-11 14:19:54,842 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 28 selfloop transitions, 5 changer transitions 31/80 dead transitions. [2024-10-11 14:19:54,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 80 transitions, 303 flow [2024-10-11 14:19:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:19:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:19:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-10-11 14:19:54,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2024-10-11 14:19:54,856 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 7 states and 199 transitions. [2024-10-11 14:19:54,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 80 transitions, 303 flow [2024-10-11 14:19:54,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 80 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:19:54,860 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 136 flow [2024-10-11 14:19:54,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2024-10-11 14:19:54,864 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-10-11 14:19:54,865 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 136 flow [2024-10-11 14:19:54,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 14:19:54,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:54,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:19:54,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:19:54,866 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 14:19:54,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1652018583, now seen corresponding path program 1 times [2024-10-11 14:19:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:54,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948452075] [2024-10-11 14:19:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:55,001 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 14:19:55,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:55,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948452075] [2024-10-11 14:19:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948452075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:55,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:55,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:19:55,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166912544] [2024-10-11 14:19:55,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:55,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:19:55,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:55,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:19:55,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:19:55,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-10-11 14:19:55,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 14:19:55,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:55,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-10-11 14:19:55,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:55,269 INFO L124 PetriNetUnfolderBase]: 963/1924 cut-off events. [2024-10-11 14:19:55,270 INFO L125 PetriNetUnfolderBase]: For 684/688 co-relation queries the response was YES. [2024-10-11 14:19:55,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4217 conditions, 1924 events. 963/1924 cut-off events. For 684/688 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 13349 event pairs, 272 based on Foata normal form. 89/1870 useless extension candidates. Maximal degree in co-relation 4201. Up to 821 conditions per place. [2024-10-11 14:19:55,280 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 26 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-10-11 14:19:55,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 232 flow [2024-10-11 14:19:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:19:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:19:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-10-11 14:19:55,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75625 [2024-10-11 14:19:55,282 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 136 flow. Second operand 4 states and 121 transitions. [2024-10-11 14:19:55,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 232 flow [2024-10-11 14:19:55,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 218 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 14:19:55,289 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 160 flow [2024-10-11 14:19:55,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-10-11 14:19:55,289 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-10-11 14:19:55,290 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 160 flow [2024-10-11 14:19:55,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 14:19:55,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:55,290 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] [2024-10-11 14:19:55,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:19:55,290 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 14:19:55,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:55,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1409180353, now seen corresponding path program 1 times [2024-10-11 14:19:55,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:55,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264270629] [2024-10-11 14:19:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:55,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:55,405 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 14:19:55,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264270629] [2024-10-11 14:19:55,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264270629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:55,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:55,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:19:55,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545496027] [2024-10-11 14:19:55,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:55,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:19:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:19:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:19:55,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-10-11 14:19:55,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 14:19:55,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:55,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-10-11 14:19:55,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:55,555 INFO L124 PetriNetUnfolderBase]: 751/1545 cut-off events. [2024-10-11 14:19:55,555 INFO L125 PetriNetUnfolderBase]: For 780/1499 co-relation queries the response was YES. [2024-10-11 14:19:55,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3893 conditions, 1545 events. 751/1545 cut-off events. For 780/1499 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10111 event pairs, 80 based on Foata normal form. 108/1549 useless extension candidates. Maximal degree in co-relation 3875. Up to 628 conditions per place. [2024-10-11 14:19:55,563 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 33 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-10-11 14:19:55,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 305 flow [2024-10-11 14:19:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:19:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:19:55,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-10-11 14:19:55,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765 [2024-10-11 14:19:55,564 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 160 flow. Second operand 5 states and 153 transitions. [2024-10-11 14:19:55,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 305 flow [2024-10-11 14:19:55,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 298 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 14:19:55,567 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 208 flow [2024-10-11 14:19:55,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-10-11 14:19:55,567 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-10-11 14:19:55,568 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 208 flow [2024-10-11 14:19:55,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 14:19:55,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:55,568 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] [2024-10-11 14:19:55,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:19:55,568 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 14:19:55,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1047392379, now seen corresponding path program 1 times [2024-10-11 14:19:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289982211] [2024-10-11 14:19:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:55,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:55,680 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 14:19:55,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:55,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289982211] [2024-10-11 14:19:55,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289982211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:55,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:55,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:19:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702713762] [2024-10-11 14:19:55,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:55,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:19:55,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:55,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:19:55,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:19:55,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-10-11 14:19:55,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 14:19:55,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:55,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-10-11 14:19:55,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:55,836 INFO L124 PetriNetUnfolderBase]: 587/1153 cut-off events. [2024-10-11 14:19:55,837 INFO L125 PetriNetUnfolderBase]: For 2021/3560 co-relation queries the response was YES. [2024-10-11 14:19:55,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3584 conditions, 1153 events. 587/1153 cut-off events. For 2021/3560 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6770 event pairs, 38 based on Foata normal form. 100/1157 useless extension candidates. Maximal degree in co-relation 3565. Up to 508 conditions per place. [2024-10-11 14:19:55,844 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 30 selfloop transitions, 11 changer transitions 2/65 dead transitions. [2024-10-11 14:19:55,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 343 flow [2024-10-11 14:19:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:19:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:19:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-10-11 14:19:55,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7375 [2024-10-11 14:19:55,846 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 208 flow. Second operand 6 states and 177 transitions. [2024-10-11 14:19:55,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 343 flow [2024-10-11 14:19:55,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 322 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-10-11 14:19:55,851 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 232 flow [2024-10-11 14:19:55,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-10-11 14:19:55,852 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-10-11 14:19:55,852 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 232 flow [2024-10-11 14:19:55,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 14:19:55,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:55,852 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, 1] [2024-10-11 14:19:55,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:19:55,852 INFO L396 AbstractCegarLoop]: === Iteration 5 === 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 14:19:55,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash 311353740, now seen corresponding path program 1 times [2024-10-11 14:19:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:55,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257687554] [2024-10-11 14:19:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:55,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:55,976 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 14:19:55,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:55,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257687554] [2024-10-11 14:19:55,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257687554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:55,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:55,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:19:55,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336480221] [2024-10-11 14:19:55,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:55,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:19:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:19:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:19:55,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 40 [2024-10-11 14:19:55,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 14:19:55,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:55,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 40 [2024-10-11 14:19:55,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:56,189 INFO L124 PetriNetUnfolderBase]: 674/1624 cut-off events. [2024-10-11 14:19:56,190 INFO L125 PetriNetUnfolderBase]: For 2704/2970 co-relation queries the response was YES. [2024-10-11 14:19:56,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 1624 events. 674/1624 cut-off events. For 2704/2970 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12506 event pairs, 198 based on Foata normal form. 17/1402 useless extension candidates. Maximal degree in co-relation 4612. Up to 424 conditions per place. [2024-10-11 14:19:56,198 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 18 selfloop transitions, 1 changer transitions 17/65 dead transitions. [2024-10-11 14:19:56,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 360 flow [2024-10-11 14:19:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:19:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:19:56,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-10-11 14:19:56,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-11 14:19:56,200 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 232 flow. Second operand 6 states and 160 transitions. [2024-10-11 14:19:56,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 360 flow [2024-10-11 14:19:56,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 324 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-11 14:19:56,208 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 209 flow [2024-10-11 14:19:56,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-10-11 14:19:56,209 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-10-11 14:19:56,210 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 209 flow [2024-10-11 14:19:56,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 14:19:56,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:19:56,211 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, 1] [2024-10-11 14:19:56,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:19:56,211 INFO L396 AbstractCegarLoop]: === Iteration 6 === 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 14:19:56,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:19:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash -664237672, now seen corresponding path program 2 times [2024-10-11 14:19:56,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:19:56,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85190016] [2024-10-11 14:19:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:19:56,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:19:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:19:56,370 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 14:19:56,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:19:56,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85190016] [2024-10-11 14:19:56,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85190016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:19:56,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:19:56,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:19:56,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616371809] [2024-10-11 14:19:56,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:19:56,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:19:56,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:19:56,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:19:56,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:19:56,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-10-11 14:19:56,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 14:19:56,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:19:56,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-10-11 14:19:56,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:19:56,574 INFO L124 PetriNetUnfolderBase]: 586/1379 cut-off events. [2024-10-11 14:19:56,574 INFO L125 PetriNetUnfolderBase]: For 1180/1276 co-relation queries the response was YES. [2024-10-11 14:19:56,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 1379 events. 586/1379 cut-off events. For 1180/1276 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9843 event pairs, 83 based on Foata normal form. 25/1289 useless extension candidates. Maximal degree in co-relation 3510. Up to 534 conditions per place. [2024-10-11 14:19:56,581 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2024-10-11 14:19:56,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 391 flow [2024-10-11 14:19:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:19:56,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:19:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-10-11 14:19:56,582 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-10-11 14:19:56,582 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 209 flow. Second operand 7 states and 178 transitions. [2024-10-11 14:19:56,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 391 flow [2024-10-11 14:19:56,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 386 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 14:19:56,587 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-10-11 14:19:56,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-10-11 14:19:56,589 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2024-10-11 14:19:56,589 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-10-11 14:19:56,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 14:19:56,591 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-10-11 14:19:56,591 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-10-11 14:19:56,592 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-10-11 14:19:56,592 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-10-11 14:19:56,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:19:56,592 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-10-11 14:19:56,595 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:19:56,595 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:19:56,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:19:56 BasicIcfg [2024-10-11 14:19:56,602 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:19:56,603 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:19:56,603 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:19:56,603 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:19:56,603 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:19:53" (3/4) ... [2024-10-11 14:19:56,605 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:19:56,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-11 14:19:56,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-11 14:19:56,608 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-11 14:19:56,611 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-10-11 14:19:56,612 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-10-11 14:19:56,612 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 14:19:56,612 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-11 14:19:56,682 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:19:56,683 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:19:56,683 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:19:56,683 INFO L158 Benchmark]: Toolchain (without parser) took 3764.89ms. Allocated memory was 151.0MB in the beginning and 274.7MB in the end (delta: 123.7MB). Free memory was 80.3MB in the beginning and 106.7MB in the end (delta: -26.5MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. [2024-10-11 14:19:56,684 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:19:56,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.49ms. Allocated memory is still 151.0MB. Free memory was 80.0MB in the beginning and 57.7MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-11 14:19:56,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.70ms. Allocated memory is still 151.0MB. Free memory was 57.7MB in the beginning and 55.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:19:56,686 INFO L158 Benchmark]: Boogie Preprocessor took 71.57ms. Allocated memory is still 151.0MB. Free memory was 55.5MB in the beginning and 119.6MB in the end (delta: -64.0MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2024-10-11 14:19:56,686 INFO L158 Benchmark]: RCFGBuilder took 381.84ms. Allocated memory was 151.0MB in the beginning and 218.1MB in the end (delta: 67.1MB). Free memory was 119.5MB in the beginning and 169.3MB in the end (delta: -49.8MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2024-10-11 14:19:56,687 INFO L158 Benchmark]: TraceAbstraction took 2738.06ms. Allocated memory was 218.1MB in the beginning and 274.7MB in the end (delta: 56.6MB). Free memory was 168.3MB in the beginning and 112.0MB in the end (delta: 56.3MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. [2024-10-11 14:19:56,687 INFO L158 Benchmark]: Witness Printer took 80.31ms. Allocated memory is still 274.7MB. Free memory was 112.0MB in the beginning and 106.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-11 14:19:56,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.49ms. Allocated memory is still 151.0MB. Free memory was 80.0MB in the beginning and 57.7MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.70ms. Allocated memory is still 151.0MB. Free memory was 57.7MB in the beginning and 55.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.57ms. Allocated memory is still 151.0MB. Free memory was 55.5MB in the beginning and 119.6MB in the end (delta: -64.0MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * RCFGBuilder took 381.84ms. Allocated memory was 151.0MB in the beginning and 218.1MB in the end (delta: 67.1MB). Free memory was 119.5MB in the beginning and 169.3MB in the end (delta: -49.8MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2738.06ms. Allocated memory was 218.1MB in the beginning and 274.7MB in the end (delta: 56.6MB). Free memory was 168.3MB in the beginning and 112.0MB in the end (delta: 56.3MB). Peak memory consumption was 112.9MB. Max. memory is 16.1GB. * Witness Printer took 80.31ms. Allocated memory is still 274.7MB. Free memory was 112.0MB in the beginning and 106.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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, 66 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: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 200 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 485 IncrementalHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 32 mSDtfsCounter, 485 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=4, InterpolantAutomatonStates: 35, 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, 0.8s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 14:19:56,712 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