./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 673666cb71096405cc13bacc98be08aac7026343d1cf8127c7ee9fffc801c83e --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:44:10,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:44:10,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:44:10,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:44:10,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:44:10,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:44:10,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:44:10,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:44:10,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:44:10,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:44:10,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:44:10,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:44:10,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:44:10,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:44:10,298 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:44:10,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:44:10,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:44:10,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:44:10,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:44:10,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:44:10,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:44:10,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:44:10,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:44:10,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:44:10,301 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:44:10,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:44:10,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:44:10,302 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:44:10,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:44:10,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:44:10,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:44:10,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:44:10,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:44:10,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:44:10,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:44:10,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:44:10,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:44:10,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:44:10,305 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:44:10,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:44:10,306 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:44:10,306 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:44:10,306 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:44:10,306 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 673666cb71096405cc13bacc98be08aac7026343d1cf8127c7ee9fffc801c83e [2024-06-27 16:44:10,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:44:10,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:44:10,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:44:10,633 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:44:10,634 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:44:10,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2024-06-27 16:44:11,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:44:11,882 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:44:11,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2024-06-27 16:44:11,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57643ff52/e92360e6dbde45888ce0bb24ca43273f/FLAG7e9dd3c3c [2024-06-27 16:44:11,904 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57643ff52/e92360e6dbde45888ce0bb24ca43273f [2024-06-27 16:44:11,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:44:11,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:44:11,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:44:11,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:44:11,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:44:11,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:44:11" (1/1) ... [2024-06-27 16:44:11,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ad4ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:11, skipping insertion in model container [2024-06-27 16:44:11,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:44:11" (1/1) ... [2024-06-27 16:44:11,958 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:44:12,159 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c[3160,3173] [2024-06-27 16:44:12,168 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:44:12,179 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:44:12,212 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c[3160,3173] [2024-06-27 16:44:12,213 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:44:12,229 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:44:12,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12 WrapperNode [2024-06-27 16:44:12,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:44:12,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:44:12,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:44:12,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:44:12,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,283 INFO L138 Inliner]: procedures = 20, calls = 38, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 117 [2024-06-27 16:44:12,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:44:12,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:44:12,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:44:12,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:44:12,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,308 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,328 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]. [2024-06-27 16:44:12,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:44:12,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:44:12,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:44:12,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:44:12,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (1/1) ... [2024-06-27 16:44:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:44:12,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:44:12,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 16:44:12,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 16:44:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:44:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:44:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:44:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:44:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:44:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:44:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:44:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:44:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:44:12,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:44:12,439 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:44:12,510 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:44:12,512 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:44:12,770 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:44:12,770 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:44:12,975 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:44:12,975 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:44:12,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:44:12 BoogieIcfgContainer [2024-06-27 16:44:12,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:44:12,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:44:12,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:44:12,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:44:12,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:44:11" (1/3) ... [2024-06-27 16:44:12,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ebe2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:44:12, skipping insertion in model container [2024-06-27 16:44:12,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:44:12" (2/3) ... [2024-06-27 16:44:12,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ebe2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:44:12, skipping insertion in model container [2024-06-27 16:44:12,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:44:12" (3/3) ... [2024-06-27 16:44:12,986 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2024-06-27 16:44:12,993 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:44:13,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:44:13,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:44:13,000 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:44:13,035 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 16:44:13,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 31 transitions, 76 flow [2024-06-27 16:44:13,096 INFO L124 PetriNetUnfolderBase]: 2/29 cut-off events. [2024-06-27 16:44:13,096 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 16:44:13,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 2/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-06-27 16:44:13,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 31 transitions, 76 flow [2024-06-27 16:44:13,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 68 flow [2024-06-27 16:44:13,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:44:13,124 INFO L357 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, mHoare=true, 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;@7e358640, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:44:13,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-06-27 16:44:13,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:44:13,134 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-06-27 16:44:13,134 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 16:44:13,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:13,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:44:13,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:44:13,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:13,143 INFO L85 PathProgramCache]: Analyzing trace with hash 757868234, now seen corresponding path program 1 times [2024-06-27 16:44:13,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:13,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125638798] [2024-06-27 16:44:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:13,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:13,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125638798] [2024-06-27 16:44:13,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125638798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:13,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:13,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:44:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124241658] [2024-06-27 16:44:13,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:13,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:44:13,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:13,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:44:13,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:44:13,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-06-27 16:44:13,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-06-27 16:44:13,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:13,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-06-27 16:44:13,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:13,676 INFO L124 PetriNetUnfolderBase]: 107/248 cut-off events. [2024-06-27 16:44:13,678 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-06-27 16:44:13,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 248 events. 107/248 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1060 event pairs, 37 based on Foata normal form. 8/230 useless extension candidates. Maximal degree in co-relation 412. Up to 131 conditions per place. [2024-06-27 16:44:13,684 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 25 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-06-27 16:44:13,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 152 flow [2024-06-27 16:44:13,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:44:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:44:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-06-27 16:44:13,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7311827956989247 [2024-06-27 16:44:13,699 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 68 flow. Second operand 3 states and 68 transitions. [2024-06-27 16:44:13,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 152 flow [2024-06-27 16:44:13,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 16:44:13,705 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 79 flow [2024-06-27 16:44:13,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-06-27 16:44:13,710 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-06-27 16:44:13,711 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 79 flow [2024-06-27 16:44:13,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-06-27 16:44:13,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:13,711 INFO L208 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] [2024-06-27 16:44:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:44:13,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:44:13,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1259910161, now seen corresponding path program 1 times [2024-06-27 16:44:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:13,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567863794] [2024-06-27 16:44:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:13,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:14,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:14,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567863794] [2024-06-27 16:44:14,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567863794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:14,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:14,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:44:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953818254] [2024-06-27 16:44:14,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:14,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:44:14,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:44:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:44:14,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-06-27 16:44:14,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-06-27 16:44:14,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:14,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-06-27 16:44:14,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:14,266 INFO L124 PetriNetUnfolderBase]: 122/301 cut-off events. [2024-06-27 16:44:14,267 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-06-27 16:44:14,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 301 events. 122/301 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1347 event pairs, 69 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 216. Up to 143 conditions per place. [2024-06-27 16:44:14,271 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 17 selfloop transitions, 3 changer transitions 10/41 dead transitions. [2024-06-27 16:44:14,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 160 flow [2024-06-27 16:44:14,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:44:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:44:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-06-27 16:44:14,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6532258064516129 [2024-06-27 16:44:14,274 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 79 flow. Second operand 4 states and 81 transitions. [2024-06-27 16:44:14,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 160 flow [2024-06-27 16:44:14,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 41 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:44:14,279 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 78 flow [2024-06-27 16:44:14,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-27 16:44:14,280 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-06-27 16:44:14,280 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 78 flow [2024-06-27 16:44:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-06-27 16:44:14,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:44:14,281 INFO L208 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] [2024-06-27 16:44:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:44:14,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:44:14,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:44:14,284 INFO L85 PathProgramCache]: Analyzing trace with hash -627325696, now seen corresponding path program 1 times [2024-06-27 16:44:14,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:44:14,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049265568] [2024-06-27 16:44:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:44:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:44:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:44:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:44:14,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:44:14,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049265568] [2024-06-27 16:44:14,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049265568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:44:14,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:44:14,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:44:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122733988] [2024-06-27 16:44:14,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:44:14,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:44:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:44:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:44:14,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:44:14,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 31 [2024-06-27 16:44:14,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-06-27 16:44:14,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:44:14,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 31 [2024-06-27 16:44:14,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:44:14,518 INFO L124 PetriNetUnfolderBase]: 22/76 cut-off events. [2024-06-27 16:44:14,519 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 16:44:14,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 76 events. 22/76 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 7 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 54. Up to 43 conditions per place. [2024-06-27 16:44:14,519 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2024-06-27 16:44:14,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 106 flow [2024-06-27 16:44:14,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:44:14,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:44:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-27 16:44:14,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2024-06-27 16:44:14,523 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 78 flow. Second operand 4 states and 73 transitions. [2024-06-27 16:44:14,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 106 flow [2024-06-27 16:44:14,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 96 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 16:44:14,525 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2024-06-27 16:44:14,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2024-06-27 16:44:14,527 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-06-27 16:44:14,527 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2024-06-27 16:44:14,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-06-27 16:44:14,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-06-27 16:44:14,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-06-27 16:44:14,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-06-27 16:44:14,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:44:14,531 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-06-27 16:44:14,534 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:44:14,535 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:44:14,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:44:14 BasicIcfg [2024-06-27 16:44:14,541 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:44:14,542 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:44:14,542 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:44:14,542 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:44:14,542 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:44:12" (3/4) ... [2024-06-27 16:44:14,544 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:44:14,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-06-27 16:44:14,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-06-27 16:44:14,555 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 96 nodes and edges [2024-06-27 16:44:14,555 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-06-27 16:44:14,555 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-06-27 16:44:14,556 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-06-27 16:44:14,640 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:44:14,641 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:44:14,641 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:44:14,644 INFO L158 Benchmark]: Toolchain (without parser) took 2734.25ms. Allocated memory was 201.3MB in the beginning and 249.6MB in the end (delta: 48.2MB). Free memory was 119.3MB in the beginning and 137.8MB in the end (delta: -18.5MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2024-06-27 16:44:14,644 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 164.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:44:14,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.93ms. Allocated memory is still 201.3MB. Free memory was 119.0MB in the beginning and 165.4MB in the end (delta: -46.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-06-27 16:44:14,645 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.57ms. Allocated memory is still 201.3MB. Free memory was 165.4MB in the beginning and 163.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:44:14,645 INFO L158 Benchmark]: Boogie Preprocessor took 60.85ms. Allocated memory is still 201.3MB. Free memory was 163.3MB in the beginning and 161.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:44:14,645 INFO L158 Benchmark]: RCFGBuilder took 630.73ms. Allocated memory is still 201.3MB. Free memory was 161.2MB in the beginning and 140.8MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-06-27 16:44:14,646 INFO L158 Benchmark]: TraceAbstraction took 1561.51ms. Allocated memory was 201.3MB in the beginning and 249.6MB in the end (delta: 48.2MB). Free memory was 139.8MB in the beginning and 143.0MB in the end (delta: -3.3MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2024-06-27 16:44:14,646 INFO L158 Benchmark]: Witness Printer took 99.67ms. Allocated memory is still 249.6MB. Free memory was 143.0MB in the beginning and 137.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 16:44:14,647 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 164.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.93ms. Allocated memory is still 201.3MB. Free memory was 119.0MB in the beginning and 165.4MB in the end (delta: -46.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.57ms. Allocated memory is still 201.3MB. Free memory was 165.4MB in the beginning and 163.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.85ms. Allocated memory is still 201.3MB. Free memory was 163.3MB in the beginning and 161.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 630.73ms. Allocated memory is still 201.3MB. Free memory was 161.2MB in the beginning and 140.8MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1561.51ms. Allocated memory was 201.3MB in the beginning and 249.6MB in the end (delta: 48.2MB). Free memory was 139.8MB in the beginning and 143.0MB in the end (delta: -3.3MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * Witness Printer took 99.67ms. Allocated memory is still 249.6MB. Free memory was 143.0MB in the beginning and 137.8MB 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: 115]: 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, 51 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86 IncrementalHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 8 mSDtfsCounter, 86 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=1, InterpolantAutomatonStates: 11, 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, 0.7s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2024-06-27 16:44:14,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE