./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/spaghetti.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/spaghetti.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 8451430e4d69b133c41912667dded61d19a596175a4065b8a2219f0d75763fd8 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:08:08,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:08:08,284 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:08:08,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:08:08,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:08:08,301 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:08:08,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:08:08,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:08:08,303 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:08:08,303 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:08:08,303 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:08:08,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:08:08,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:08:08,304 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:08:08,305 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:08:08,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:08:08,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:08:08,305 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:08:08,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:08:08,306 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:08:08,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:08:08,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:08:08,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:08:08,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:08:08,307 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:08:08,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:08:08,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:08:08,308 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:08:08,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:08:08,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:08:08,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:08:08,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:08:08,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:08:08,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:08:08,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:08:08,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:08:08,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:08:08,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:08:08,310 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:08:08,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:08:08,310 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:08:08,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:08:08,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:08:08,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8451430e4d69b133c41912667dded61d19a596175a4065b8a2219f0d75763fd8 [2024-06-27 17:08:08,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:08:08,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:08:08,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:08:08,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:08:08,472 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:08:08,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c [2024-06-27 17:08:09,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:08:09,647 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:08:09,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c [2024-06-27 17:08:09,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b40f1176/ad88497be1534fb49f661b70733e00cb/FLAG9c09eeb40 [2024-06-27 17:08:09,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b40f1176/ad88497be1534fb49f661b70733e00cb [2024-06-27 17:08:09,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:08:09,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:08:09,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:08:09,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:08:09,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:08:09,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6463b3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09, skipping insertion in model container [2024-06-27 17:08:09,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,692 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:08:09,832 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/spaghetti.wvr.c[3273,3286] [2024-06-27 17:08:09,835 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:08:09,841 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:08:09,856 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/spaghetti.wvr.c[3273,3286] [2024-06-27 17:08:09,857 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:08:09,868 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:08:09,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09 WrapperNode [2024-06-27 17:08:09,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:08:09,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:08:09,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:08:09,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:08:09,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,905 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-06-27 17:08:09,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:08:09,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:08:09,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:08:09,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:08:09,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,942 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 17:08:09,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:08:09,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:08:09,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:08:09,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:08:09,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (1/1) ... [2024-06-27 17:08:09,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:08:09,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:08:09,989 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 17:08:10,008 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 17:08:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:08:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 17:08:10,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 17:08:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 17:08:10,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 17:08:10,036 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 17:08:10,036 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 17:08:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 17:08:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 17:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:08:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:08:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:08:10,039 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 17:08:10,134 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:08:10,136 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:08:10,304 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:08:10,304 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:08:10,387 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:08:10,389 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-27 17:08:10,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:08:10 BoogieIcfgContainer [2024-06-27 17:08:10,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:08:10,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:08:10,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:08:10,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:08:10,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:08:09" (1/3) ... [2024-06-27 17:08:10,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373884c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:08:10, skipping insertion in model container [2024-06-27 17:08:10,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:08:09" (2/3) ... [2024-06-27 17:08:10,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373884c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:08:10, skipping insertion in model container [2024-06-27 17:08:10,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:08:10" (3/3) ... [2024-06-27 17:08:10,397 INFO L112 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2024-06-27 17:08:10,403 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:08:10,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:08:10,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 17:08:10,409 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:08:10,460 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 17:08:10,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 58 transitions, 144 flow [2024-06-27 17:08:10,511 INFO L124 PetriNetUnfolderBase]: 8/54 cut-off events. [2024-06-27 17:08:10,511 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:08:10,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 54 events. 8/54 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-06-27 17:08:10,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 58 transitions, 144 flow [2024-06-27 17:08:10,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 53 transitions, 130 flow [2024-06-27 17:08:10,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:08:10,529 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;@6b4d26fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:08:10,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 17:08:10,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:08:10,541 INFO L124 PetriNetUnfolderBase]: 8/52 cut-off events. [2024-06-27 17:08:10,542 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:08:10,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:10,543 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, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:10,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:10,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:10,547 INFO L85 PathProgramCache]: Analyzing trace with hash -888735908, now seen corresponding path program 1 times [2024-06-27 17:08:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:10,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168619206] [2024-06-27 17:08:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:10,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:10,717 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 17:08:10,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:10,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168619206] [2024-06-27 17:08:10,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168619206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:10,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:10,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:08:10,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296328918] [2024-06-27 17:08:10,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:10,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-06-27 17:08:10,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:10,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-06-27 17:08:10,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-06-27 17:08:10,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 58 [2024-06-27 17:08:10,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 130 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 17:08:10,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:10,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 58 [2024-06-27 17:08:10,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:11,707 INFO L124 PetriNetUnfolderBase]: 8028/12167 cut-off events. [2024-06-27 17:08:11,708 INFO L125 PetriNetUnfolderBase]: For 596/596 co-relation queries the response was YES. [2024-06-27 17:08:11,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23168 conditions, 12167 events. 8028/12167 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 78912 event pairs, 6395 based on Foata normal form. 0/10187 useless extension candidates. Maximal degree in co-relation 21565. Up to 10376 conditions per place. [2024-06-27 17:08:11,779 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 32 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-06-27 17:08:11,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 186 flow [2024-06-27 17:08:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-06-27 17:08:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-06-27 17:08:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-06-27 17:08:11,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-06-27 17:08:11,789 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 130 flow. Second operand 2 states and 78 transitions. [2024-06-27 17:08:11,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 186 flow [2024-06-27 17:08:11,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 170 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 17:08:11,801 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 106 flow [2024-06-27 17:08:11,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-06-27 17:08:11,805 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-06-27 17:08:11,805 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 106 flow [2024-06-27 17:08:11,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 17:08:11,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:11,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:11,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:08:11,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:11,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:11,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1753689300, now seen corresponding path program 1 times [2024-06-27 17:08:11,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:11,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919615319] [2024-06-27 17:08:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:12,082 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 17:08:12,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:12,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919615319] [2024-06-27 17:08:12,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919615319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:12,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:12,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:08:12,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443524618] [2024-06-27 17:08:12,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:12,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:08:12,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:12,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:08:12,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:08:12,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-06-27 17:08:12,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 17:08:12,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:12,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-06-27 17:08:12,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:13,667 INFO L124 PetriNetUnfolderBase]: 26781/36412 cut-off events. [2024-06-27 17:08:13,667 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-06-27 17:08:13,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72092 conditions, 36412 events. 26781/36412 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 1372. Compared 216142 event pairs, 10227 based on Foata normal form. 1/31714 useless extension candidates. Maximal degree in co-relation 72089. Up to 17110 conditions per place. [2024-06-27 17:08:13,800 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 78 selfloop transitions, 10 changer transitions 11/110 dead transitions. [2024-06-27 17:08:13,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 110 transitions, 434 flow [2024-06-27 17:08:13,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:08:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:08:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-06-27 17:08:13,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2024-06-27 17:08:13,805 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 106 flow. Second operand 4 states and 160 transitions. [2024-06-27 17:08:13,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 110 transitions, 434 flow [2024-06-27 17:08:13,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 110 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 17:08:13,809 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 184 flow [2024-06-27 17:08:13,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2024-06-27 17:08:13,810 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2024-06-27 17:08:13,810 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 184 flow [2024-06-27 17:08:13,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 17:08:13,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:08:13,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:08:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:08:13,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 17:08:13,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:08:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1760565040, now seen corresponding path program 2 times [2024-06-27 17:08:13,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:08:13,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944027862] [2024-06-27 17:08:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:08:13,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:08:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:08:14,057 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 17:08:14,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:08:14,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944027862] [2024-06-27 17:08:14,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944027862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:08:14,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:08:14,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:08:14,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985300474] [2024-06-27 17:08:14,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:08:14,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:08:14,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:08:14,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:08:14,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:08:14,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-06-27 17:08:14,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 17:08:14,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:08:14,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-06-27 17:08:14,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:08:15,794 INFO L124 PetriNetUnfolderBase]: 31602/43344 cut-off events. [2024-06-27 17:08:15,795 INFO L125 PetriNetUnfolderBase]: For 12209/12209 co-relation queries the response was YES. [2024-06-27 17:08:15,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98794 conditions, 43344 events. 31602/43344 cut-off events. For 12209/12209 co-relation queries the response was YES. Maximal size of possible extension queue 1578. Compared 262167 event pairs, 12435 based on Foata normal form. 1/37956 useless extension candidates. Maximal degree in co-relation 98788. Up to 21623 conditions per place. [2024-06-27 17:08:16,020 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 0 selfloop transitions, 0 changer transitions 124/124 dead transitions. [2024-06-27 17:08:16,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 124 transitions, 616 flow [2024-06-27 17:08:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:08:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:08:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-06-27 17:08:16,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6767241379310345 [2024-06-27 17:08:16,025 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 184 flow. Second operand 4 states and 157 transitions. [2024-06-27 17:08:16,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 124 transitions, 616 flow [2024-06-27 17:08:16,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 124 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 17:08:16,041 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2024-06-27 17:08:16,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2024-06-27 17:08:16,043 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2024-06-27 17:08:16,043 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2024-06-27 17:08:16,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 17:08:16,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-06-27 17:08:16,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-06-27 17:08:16,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-06-27 17:08:16,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-06-27 17:08:16,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-06-27 17:08:16,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:08:16,048 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2024-06-27 17:08:16,052 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 17:08:16,052 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 17:08:16,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 05:08:16 BasicIcfg [2024-06-27 17:08:16,060 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 17:08:16,060 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 17:08:16,060 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 17:08:16,061 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 17:08:16,061 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:08:10" (3/4) ... [2024-06-27 17:08:16,066 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 17:08:16,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-06-27 17:08:16,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-06-27 17:08:16,069 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-06-27 17:08:16,069 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2024-06-27 17:08:16,073 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2024-06-27 17:08:16,073 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-06-27 17:08:16,074 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-06-27 17:08:16,074 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-06-27 17:08:16,140 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 17:08:16,140 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 17:08:16,140 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 17:08:16,141 INFO L158 Benchmark]: Toolchain (without parser) took 6473.64ms. Allocated memory was 144.7MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 72.9MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 372.1MB. Max. memory is 16.1GB. [2024-06-27 17:08:16,142 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 144.7MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:08:16,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.74ms. Allocated memory was 144.7MB in the beginning and 203.4MB in the end (delta: 58.7MB). Free memory was 72.7MB in the beginning and 172.9MB in the end (delta: -100.2MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2024-06-27 17:08:16,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.15ms. Allocated memory is still 203.4MB. Free memory was 172.9MB in the beginning and 171.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:08:16,143 INFO L158 Benchmark]: Boogie Preprocessor took 48.31ms. Allocated memory is still 203.4MB. Free memory was 171.8MB in the beginning and 169.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:08:16,143 INFO L158 Benchmark]: RCFGBuilder took 435.58ms. Allocated memory is still 203.4MB. Free memory was 169.8MB in the beginning and 147.7MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 17:08:16,143 INFO L158 Benchmark]: TraceAbstraction took 5668.44ms. Allocated memory was 203.4MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 146.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 680.4MB. Max. memory is 16.1GB. [2024-06-27 17:08:16,144 INFO L158 Benchmark]: Witness Printer took 79.98ms. Allocated memory is still 1.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 17:08:16,145 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 144.7MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.74ms. Allocated memory was 144.7MB in the beginning and 203.4MB in the end (delta: 58.7MB). Free memory was 72.7MB in the beginning and 172.9MB in the end (delta: -100.2MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.15ms. Allocated memory is still 203.4MB. Free memory was 172.9MB in the beginning and 171.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.31ms. Allocated memory is still 203.4MB. Free memory was 171.8MB in the beginning and 169.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 435.58ms. Allocated memory is still 203.4MB. Free memory was 169.8MB in the beginning and 147.7MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5668.44ms. Allocated memory was 203.4MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 146.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 680.4MB. Max. memory is 16.1GB. * Witness Printer took 79.98ms. Allocated memory is still 1.6GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 127]: 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 9 procedures, 89 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: 5.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 352 IncrementalHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 22 mSDtfsCounter, 352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.5s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 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 17:08:16,175 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