./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/rfi003_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/rfi003_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 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:17:25,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:17:25,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:17:25,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:17:25,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:17:25,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:17:25,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:17:25,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:17:25,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:17:25,603 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:17:25,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:17:25,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:17:25,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:17:25,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:17:25,610 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:17:25,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:17:25,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:17:25,611 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:17:25,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:17:25,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:17:25,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:17:25,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:17:25,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:17:25,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:17:25,615 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:17:25,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:17:25,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:17:25,615 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:17:25,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:17:25,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:17:25,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:17:25,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:17:25,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:17:25,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:17:25,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:17:25,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:17:25,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:17:25,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:17:25,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:17:25,621 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:17:25,621 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:17:25,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:17:25,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2024-10-11 14:17:25,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:17:25,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:17:25,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:17:25,998 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:17:26,002 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:17:26,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2024-10-11 14:17:27,342 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:17:27,613 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:17:27,615 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2024-10-11 14:17:27,634 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/197c23cf8/8925403fa7df42c4a90b962e74b332bf/FLAG31a627b45 [2024-10-11 14:17:27,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/197c23cf8/8925403fa7df42c4a90b962e74b332bf [2024-10-11 14:17:27,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:17:27,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:17:27,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:17:27,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:17:27,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:17:27,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:17:27" (1/1) ... [2024-10-11 14:17:27,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f46bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:27, skipping insertion in model container [2024-10-11 14:17:27,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:17:27" (1/1) ... [2024-10-11 14:17:27,708 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:17:27,870 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/rfi003_tso.i[944,957] [2024-10-11 14:17:28,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:17:28,065 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:17:28,075 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/rfi003_tso.i[944,957] [2024-10-11 14:17:28,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:17:28,191 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:17:28,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28 WrapperNode [2024-10-11 14:17:28,192 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:17:28,193 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:17:28,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:17:28,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:17:28,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,242 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2024-10-11 14:17:28,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:17:28,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:17:28,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:17:28,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:17:28,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,273 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 14:17:28,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:17:28,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:17:28,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:17:28,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:17:28,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (1/1) ... [2024-10-11 14:17:28,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:17:28,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:17:28,321 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 14:17:28,325 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 14:17:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:17:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:17:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-11 14:17:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-11 14:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-11 14:17:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-11 14:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:17:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:17:28,395 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 14:17:28,547 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:17:28,549 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:17:28,855 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:17:28,858 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:17:29,063 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:17:29,063 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:17:29,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:17:29 BoogieIcfgContainer [2024-10-11 14:17:29,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:17:29,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:17:29,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:17:29,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:17:29,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:17:27" (1/3) ... [2024-10-11 14:17:29,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3105559c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:17:29, skipping insertion in model container [2024-10-11 14:17:29,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:28" (2/3) ... [2024-10-11 14:17:29,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3105559c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:17:29, skipping insertion in model container [2024-10-11 14:17:29,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:17:29" (3/3) ... [2024-10-11 14:17:29,072 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-10-11 14:17:29,084 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:17:29,085 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 14:17:29,085 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:17:29,123 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:17:29,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 74 flow [2024-10-11 14:17:29,200 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2024-10-11 14:17:29,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:17:29,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 1/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-10-11 14:17:29,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 74 flow [2024-10-11 14:17:29,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 68 flow [2024-10-11 14:17:29,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:17:29,239 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;@22bdbd7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:17:29,243 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-11 14:17:29,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:17:29,253 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-11 14:17:29,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:17:29,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:29,281 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:17:29,281 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:17:29,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1718409122, now seen corresponding path program 1 times [2024-10-11 14:17:29,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:29,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487943165] [2024-10-11 14:17:29,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:29,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:29,668 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 14:17:29,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:29,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487943165] [2024-10-11 14:17:29,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487943165] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:29,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:29,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 14:17:29,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286505562] [2024-10-11 14:17:29,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:29,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:17:29,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:29,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:17:29,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:17:29,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2024-10-11 14:17:29,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 14:17:29,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:29,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2024-10-11 14:17:29,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:29,997 INFO L124 PetriNetUnfolderBase]: 249/482 cut-off events. [2024-10-11 14:17:29,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:17:30,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 482 events. 249/482 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2462 event pairs, 24 based on Foata normal form. 24/495 useless extension candidates. Maximal degree in co-relation 912. Up to 366 conditions per place. [2024-10-11 14:17:30,004 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 23 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2024-10-11 14:17:30,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 136 flow [2024-10-11 14:17:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:17:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:17:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-10-11 14:17:30,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2024-10-11 14:17:30,016 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 69 transitions. [2024-10-11 14:17:30,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 136 flow [2024-10-11 14:17:30,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:17:30,020 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2024-10-11 14:17:30,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-10-11 14:17:30,024 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-10-11 14:17:30,024 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2024-10-11 14:17:30,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 14:17:30,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:30,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:17:30,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:17:30,025 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:17:30,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1142458704, now seen corresponding path program 1 times [2024-10-11 14:17:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:30,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500574420] [2024-10-11 14:17:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:30,297 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 14:17:30,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500574420] [2024-10-11 14:17:30,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500574420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:30,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:30,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:17:30,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621330630] [2024-10-11 14:17:30,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:30,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:17:30,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:17:30,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:17:30,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-10-11 14:17:30,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 14:17:30,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:30,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-10-11 14:17:30,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:30,460 INFO L124 PetriNetUnfolderBase]: 268/553 cut-off events. [2024-10-11 14:17:30,460 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-10-11 14:17:30,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 553 events. 268/553 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2732 event pairs, 62 based on Foata normal form. 35/563 useless extension candidates. Maximal degree in co-relation 1068. Up to 241 conditions per place. [2024-10-11 14:17:30,463 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/50 dead transitions. [2024-10-11 14:17:30,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 198 flow [2024-10-11 14:17:30,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:17:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:17:30,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-11 14:17:30,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-10-11 14:17:30,465 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 4 states and 84 transitions. [2024-10-11 14:17:30,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 198 flow [2024-10-11 14:17:30,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 50 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:17:30,466 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 86 flow [2024-10-11 14:17:30,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-10-11 14:17:30,467 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-10-11 14:17:30,467 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 86 flow [2024-10-11 14:17:30,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 14:17:30,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:30,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:17:30,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:17:30,468 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:17:30,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:30,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1130605351, now seen corresponding path program 1 times [2024-10-11 14:17:30,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:30,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179856525] [2024-10-11 14:17:30,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:30,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:30,676 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 14:17:30,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:30,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179856525] [2024-10-11 14:17:30,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179856525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:30,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:17:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107492454] [2024-10-11 14:17:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:30,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:17:30,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:17:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:17:30,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-10-11 14:17:30,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 14:17:30,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:30,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-10-11 14:17:30,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:30,810 INFO L124 PetriNetUnfolderBase]: 134/276 cut-off events. [2024-10-11 14:17:30,810 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-11 14:17:30,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 276 events. 134/276 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1017 event pairs, 42 based on Foata normal form. 20/287 useless extension candidates. Maximal degree in co-relation 633. Up to 116 conditions per place. [2024-10-11 14:17:30,812 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 30 selfloop transitions, 6 changer transitions 1/45 dead transitions. [2024-10-11 14:17:30,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 195 flow [2024-10-11 14:17:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:17:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:17:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-10-11 14:17:30,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-10-11 14:17:30,813 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 86 flow. Second operand 5 states and 89 transitions. [2024-10-11 14:17:30,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 195 flow [2024-10-11 14:17:30,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 14:17:30,815 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 102 flow [2024-10-11 14:17:30,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-10-11 14:17:30,815 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-10-11 14:17:30,815 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 102 flow [2024-10-11 14:17:30,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 14:17:30,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:30,816 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 14:17:30,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:17:30,816 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:17:30,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:30,817 INFO L85 PathProgramCache]: Analyzing trace with hash -303791634, now seen corresponding path program 1 times [2024-10-11 14:17:30,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:30,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463467622] [2024-10-11 14:17:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:30,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:34,017 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 14:17:34,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:34,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463467622] [2024-10-11 14:17:34,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463467622] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:34,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:34,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-11 14:17:34,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920969917] [2024-10-11 14:17:34,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:34,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:17:34,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:17:34,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:17:34,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-11 14:17:34,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 102 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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 14:17:34,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:34,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-11 14:17:34,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:34,666 INFO L124 PetriNetUnfolderBase]: 148/344 cut-off events. [2024-10-11 14:17:34,670 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-10-11 14:17:34,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 344 events. 148/344 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1389 event pairs, 28 based on Foata normal form. 4/343 useless extension candidates. Maximal degree in co-relation 763. Up to 136 conditions per place. [2024-10-11 14:17:34,672 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 25 selfloop transitions, 15 changer transitions 16/67 dead transitions. [2024-10-11 14:17:34,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 296 flow [2024-10-11 14:17:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:17:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:17:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-10-11 14:17:34,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4903581267217631 [2024-10-11 14:17:34,674 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 102 flow. Second operand 11 states and 178 transitions. [2024-10-11 14:17:34,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 296 flow [2024-10-11 14:17:34,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 262 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-11 14:17:34,681 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 158 flow [2024-10-11 14:17:34,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=158, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-10-11 14:17:34,681 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-11 14:17:34,681 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 158 flow [2024-10-11 14:17:34,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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 14:17:34,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:34,682 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 14:17:34,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:17:34,682 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:17:34,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash 56928114, now seen corresponding path program 2 times [2024-10-11 14:17:34,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:34,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244870865] [2024-10-11 14:17:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:34,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:36,540 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 14:17:36,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:36,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244870865] [2024-10-11 14:17:36,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244870865] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:36,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:36,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 14:17:36,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887478540] [2024-10-11 14:17:36,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:36,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:17:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:17:36,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:17:36,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-10-11 14:17:36,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 158 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 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 14:17:36,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:36,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-10-11 14:17:36,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:37,064 INFO L124 PetriNetUnfolderBase]: 182/434 cut-off events. [2024-10-11 14:17:37,064 INFO L125 PetriNetUnfolderBase]: For 134/138 co-relation queries the response was YES. [2024-10-11 14:17:37,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 434 events. 182/434 cut-off events. For 134/138 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1972 event pairs, 52 based on Foata normal form. 4/426 useless extension candidates. Maximal degree in co-relation 1072. Up to 132 conditions per place. [2024-10-11 14:17:37,066 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 19 selfloop transitions, 7 changer transitions 35/72 dead transitions. [2024-10-11 14:17:37,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 387 flow [2024-10-11 14:17:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:17:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:17:37,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-10-11 14:17:37,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:17:37,067 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 158 flow. Second operand 10 states and 165 transitions. [2024-10-11 14:17:37,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 387 flow [2024-10-11 14:17:37,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 380 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-11 14:17:37,070 INFO L231 Difference]: Finished difference. Result has 59 places, 32 transitions, 137 flow [2024-10-11 14:17:37,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=137, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2024-10-11 14:17:37,070 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 22 predicate places. [2024-10-11 14:17:37,071 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 32 transitions, 137 flow [2024-10-11 14:17:37,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 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 14:17:37,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:37,071 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 14:17:37,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:17:37,071 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:17:37,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -489657136, now seen corresponding path program 3 times [2024-10-11 14:17:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:37,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479438638] [2024-10-11 14:17:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:37,811 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 14:17:37,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:37,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479438638] [2024-10-11 14:17:37,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479438638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:37,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:37,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:17:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532721604] [2024-10-11 14:17:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:37,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:17:37,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:17:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:17:37,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-10-11 14:17:37,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 32 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 14:17:37,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:37,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-10-11 14:17:37,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:37,974 INFO L124 PetriNetUnfolderBase]: 60/145 cut-off events. [2024-10-11 14:17:37,975 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-11 14:17:37,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 145 events. 60/145 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 375 event pairs, 8 based on Foata normal form. 4/147 useless extension candidates. Maximal degree in co-relation 391. Up to 58 conditions per place. [2024-10-11 14:17:37,975 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-10-11 14:17:37,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 39 transitions, 215 flow [2024-10-11 14:17:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:17:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:17:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-10-11 14:17:37,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-10-11 14:17:37,977 INFO L175 Difference]: Start difference. First operand has 59 places, 32 transitions, 137 flow. Second operand 8 states and 102 transitions. [2024-10-11 14:17:37,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 39 transitions, 215 flow [2024-10-11 14:17:37,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 172 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-10-11 14:17:37,978 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-10-11 14:17:37,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-10-11 14:17:37,979 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2024-10-11 14:17:37,979 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-10-11 14:17:37,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 14:17:37,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-10-11 14:17:37,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-10-11 14:17:37,982 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-10-11 14:17:37,982 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-10-11 14:17:37,982 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-10-11 14:17:37,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:17:37,982 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-10-11 14:17:37,986 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:17:37,986 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:17:37,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:17:37 BasicIcfg [2024-10-11 14:17:37,990 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:17:37,990 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:17:37,990 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:17:37,990 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:17:37,991 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:17:29" (3/4) ... [2024-10-11 14:17:37,992 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:17:37,993 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-11 14:17:37,994 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-11 14:17:37,997 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 75 nodes and edges [2024-10-11 14:17:37,997 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-11 14:17:37,997 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 14:17:37,997 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-11 14:17:38,063 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:17:38,063 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:17:38,063 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:17:38,064 INFO L158 Benchmark]: Toolchain (without parser) took 10411.08ms. Allocated memory was 186.6MB in the beginning and 664.8MB in the end (delta: 478.2MB). Free memory was 112.3MB in the beginning and 470.3MB in the end (delta: -358.0MB). Peak memory consumption was 122.6MB. Max. memory is 16.1GB. [2024-10-11 14:17:38,064 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:17:38,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.42ms. Allocated memory is still 186.6MB. Free memory was 112.0MB in the beginning and 147.3MB in the end (delta: -35.2MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. [2024-10-11 14:17:38,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.81ms. Allocated memory is still 186.6MB. Free memory was 147.3MB in the beginning and 144.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:17:38,064 INFO L158 Benchmark]: Boogie Preprocessor took 45.07ms. Allocated memory is still 186.6MB. Free memory was 144.1MB in the beginning and 139.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:17:38,065 INFO L158 Benchmark]: RCFGBuilder took 775.56ms. Allocated memory is still 186.6MB. Free memory was 139.9MB in the beginning and 69.7MB in the end (delta: 70.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2024-10-11 14:17:38,065 INFO L158 Benchmark]: TraceAbstraction took 8923.39ms. Allocated memory was 186.6MB in the beginning and 664.8MB in the end (delta: 478.2MB). Free memory was 68.6MB in the beginning and 475.5MB in the end (delta: -406.9MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. [2024-10-11 14:17:38,065 INFO L158 Benchmark]: Witness Printer took 73.05ms. Allocated memory is still 664.8MB. Free memory was 475.5MB in the beginning and 470.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-11 14:17:38,066 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 537.42ms. Allocated memory is still 186.6MB. Free memory was 112.0MB in the beginning and 147.3MB in the end (delta: -35.2MB). Peak memory consumption was 34.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.81ms. Allocated memory is still 186.6MB. Free memory was 147.3MB in the beginning and 144.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.07ms. Allocated memory is still 186.6MB. Free memory was 144.1MB in the beginning and 139.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 775.56ms. Allocated memory is still 186.6MB. Free memory was 139.9MB in the beginning and 69.7MB in the end (delta: 70.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8923.39ms. Allocated memory was 186.6MB in the beginning and 664.8MB in the end (delta: 478.2MB). Free memory was 68.6MB in the beginning and 475.5MB in the end (delta: -406.9MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. * Witness Printer took 73.05ms. Allocated memory is still 664.8MB. Free memory was 475.5MB in the beginning and 470.3MB 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 - 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 5 procedures, 53 locations, 5 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: 8.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 201 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 193 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 787 IncrementalHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 8 mSDtfsCounter, 787 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=4, InterpolantAutomatonStates: 41, 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, 0.5s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 1310 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 14:17:38,102 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