./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.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 69a3560a89bb35c8c81d2aea87ba8845d78238fa641b06d2b772cf5882c5c8f6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:10:01,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:10:01,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:10:01,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:10:01,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:10:01,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:10:01,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:10:01,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:10:01,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:10:01,795 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:10:01,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:10:01,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:10:01,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:10:01,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:10:01,799 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:10:01,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:10:01,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:10:01,800 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:10:01,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:10:01,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:10:01,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:10:01,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:10:01,801 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:10:01,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:10:01,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:10:01,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:10:01,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:10:01,806 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:10:01,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:10:01,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:10:01,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:10:01,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:10:01,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:10:01,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:10:01,808 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:10:01,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:10:01,808 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:10:01,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:10:01,809 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:10:01,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:10:01,809 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:10:01,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:10:01,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a3560a89bb35c8c81d2aea87ba8845d78238fa641b06d2b772cf5882c5c8f6 [2024-10-13 07:10:02,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:10:02,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:10:02,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:10:02,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:10:02,125 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:10:02,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2024-10-13 07:10:03,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:10:03,850 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:10:03,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2024-10-13 07:10:03,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103d3c2fe/e3db3901fe7c4d00b795767d16e224c0/FLAG645c00862 [2024-10-13 07:10:03,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/103d3c2fe/e3db3901fe7c4d00b795767d16e224c0 [2024-10-13 07:10:03,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:10:03,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:10:03,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:10:03,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:10:03,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:10:03,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:03" (1/1) ... [2024-10-13 07:10:03,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46578854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:03, skipping insertion in model container [2024-10-13 07:10:03,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:03" (1/1) ... [2024-10-13 07:10:03,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:10:04,089 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2678,2691] [2024-10-13 07:10:04,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:10:04,105 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:10:04,124 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2678,2691] [2024-10-13 07:10:04,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:10:04,143 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:10:04,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04 WrapperNode [2024-10-13 07:10:04,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:10:04,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:10:04,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:10:04,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:10:04,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,175 INFO L138 Inliner]: procedures = 20, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 114 [2024-10-13 07:10:04,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:10:04,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:10:04,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:10:04,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:10:04,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,211 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 07:10:04,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:10:04,224 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:10:04,224 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:10:04,224 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:10:04,225 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (1/1) ... [2024-10-13 07:10:04,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:10:04,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:10:04,262 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) [2024-10-13 07:10:04,268 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 [2024-10-13 07:10:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:10:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:10:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:10:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:10:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:10:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:10:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:10:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:10:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:10:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:10:04,322 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:10:04,425 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:10:04,427 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:10:04,641 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:10:04,641 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:10:04,844 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:10:04,845 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 07:10:04,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:04 BoogieIcfgContainer [2024-10-13 07:10:04,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:10:04,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:10:04,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:10:04,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:10:04,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:10:03" (1/3) ... [2024-10-13 07:10:04,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcf0311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:04, skipping insertion in model container [2024-10-13 07:10:04,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:04" (2/3) ... [2024-10-13 07:10:04,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcf0311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:04, skipping insertion in model container [2024-10-13 07:10:04,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:04" (3/3) ... [2024-10-13 07:10:04,853 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2024-10-13 07:10:04,868 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:10:04,868 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:10:04,869 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:10:04,918 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 07:10:04,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 64 flow [2024-10-13 07:10:04,979 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2024-10-13 07:10:04,980 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:10:04,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 0/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-13 07:10:04,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 64 flow [2024-10-13 07:10:04,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 56 flow [2024-10-13 07:10:04,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:10:05,007 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36c18102, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:10:05,007 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 07:10:05,017 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:10:05,017 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2024-10-13 07:10:05,017 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:10:05,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:05,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:10:05,019 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:10:05,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2136722998, now seen corresponding path program 1 times [2024-10-13 07:10:05,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:05,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248221680] [2024-10-13 07:10:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:05,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:10:05,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:05,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248221680] [2024-10-13 07:10:05,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248221680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:10:05,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:10:05,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:10:05,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357442582] [2024-10-13 07:10:05,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:10:05,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:10:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:10:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:10:05,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 25 [2024-10-13 07:10:05,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:05,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:05,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 25 [2024-10-13 07:10:05,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:05,953 INFO L124 PetriNetUnfolderBase]: 142/281 cut-off events. [2024-10-13 07:10:05,954 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-13 07:10:05,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 281 events. 142/281 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 997 event pairs, 114 based on Foata normal form. 1/281 useless extension candidates. Maximal degree in co-relation 529. Up to 192 conditions per place. [2024-10-13 07:10:05,959 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 22 selfloop transitions, 3 changer transitions 10/38 dead transitions. [2024-10-13 07:10:05,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 167 flow [2024-10-13 07:10:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:10:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:10:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-10-13 07:10:05,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-10-13 07:10:05,975 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 56 flow. Second operand 4 states and 56 transitions. [2024-10-13 07:10:05,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 167 flow [2024-10-13 07:10:05,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 153 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 07:10:05,982 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 62 flow [2024-10-13 07:10:05,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2024-10-13 07:10:05,989 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-10-13 07:10:05,989 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 62 flow [2024-10-13 07:10:05,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:05,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:05,990 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:10:05,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:10:05,991 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:10:05,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:05,992 INFO L85 PathProgramCache]: Analyzing trace with hash 145318648, now seen corresponding path program 2 times [2024-10-13 07:10:05,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:05,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153128665] [2024-10-13 07:10:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:05,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:10:06,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153128665] [2024-10-13 07:10:06,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153128665] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:10:06,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:10:06,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:10:06,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370874861] [2024-10-13 07:10:06,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:10:06,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:10:06,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:06,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:10:06,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:10:06,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-10-13 07:10:06,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:06,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:06,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-10-13 07:10:06,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:06,289 INFO L124 PetriNetUnfolderBase]: 38/103 cut-off events. [2024-10-13 07:10:06,290 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 07:10:06,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 103 events. 38/103 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 259 event pairs, 9 based on Foata normal form. 4/107 useless extension candidates. Maximal degree in co-relation 105. Up to 40 conditions per place. [2024-10-13 07:10:06,292 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 16 selfloop transitions, 4 changer transitions 6/32 dead transitions. [2024-10-13 07:10:06,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 135 flow [2024-10-13 07:10:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:10:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:10:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-10-13 07:10:06,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-10-13 07:10:06,295 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 62 flow. Second operand 5 states and 67 transitions. [2024-10-13 07:10:06,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 135 flow [2024-10-13 07:10:06,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 127 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 07:10:06,298 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 79 flow [2024-10-13 07:10:06,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2024-10-13 07:10:06,301 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-10-13 07:10:06,301 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 79 flow [2024-10-13 07:10:06,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:06,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:06,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:10:06,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:10:06,302 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:10:06,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:06,303 INFO L85 PathProgramCache]: Analyzing trace with hash 450589844, now seen corresponding path program 3 times [2024-10-13 07:10:06,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:06,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941690445] [2024-10-13 07:10:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:06,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:10:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941690445] [2024-10-13 07:10:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941690445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:10:06,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:10:06,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:10:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592285285] [2024-10-13 07:10:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:10:06,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:10:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:10:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:10:06,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 25 [2024-10-13 07:10:06,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:06,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:06,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 25 [2024-10-13 07:10:06,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:06,524 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2024-10-13 07:10:06,524 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-13 07:10:06,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 21 events. 6/21 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 55. Up to 8 conditions per place. [2024-10-13 07:10:06,525 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2024-10-13 07:10:06,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 13 transitions, 63 flow [2024-10-13 07:10:06,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:10:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:10:06,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-10-13 07:10:06,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.416 [2024-10-13 07:10:06,528 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 79 flow. Second operand 5 states and 52 transitions. [2024-10-13 07:10:06,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 13 transitions, 63 flow [2024-10-13 07:10:06,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 55 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-13 07:10:06,529 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2024-10-13 07:10:06,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2024-10-13 07:10:06,530 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -9 predicate places. [2024-10-13 07:10:06,531 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2024-10-13 07:10:06,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:10:06,534 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-13 07:10:06,535 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-13 07:10:06,535 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-13 07:10:06,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:10:06,535 INFO L407 BasicCegarLoop]: Path program histogram: [3] [2024-10-13 07:10:06,539 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 07:10:06,539 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 07:10:06,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:10:06 BasicIcfg [2024-10-13 07:10:06,547 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 07:10:06,548 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 07:10:06,548 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 07:10:06,548 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 07:10:06,549 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:04" (3/4) ... [2024-10-13 07:10:06,550 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 07:10:06,553 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-13 07:10:06,553 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-13 07:10:06,557 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 64 nodes and edges [2024-10-13 07:10:06,557 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-13 07:10:06,558 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-13 07:10:06,558 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 07:10:06,633 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 07:10:06,634 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 07:10:06,634 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 07:10:06,635 INFO L158 Benchmark]: Toolchain (without parser) took 2758.17ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 121.3MB in the beginning and 117.0MB in the end (delta: 4.3MB). Peak memory consumption was 89.9MB. Max. memory is 16.1GB. [2024-10-13 07:10:06,635 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 176.2MB. Free memory is still 140.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 07:10:06,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.69ms. Allocated memory is still 176.2MB. Free memory was 121.3MB in the beginning and 108.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 07:10:06,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.58ms. Allocated memory is still 176.2MB. Free memory was 108.7MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 07:10:06,636 INFO L158 Benchmark]: Boogie Preprocessor took 46.73ms. Allocated memory is still 176.2MB. Free memory was 106.7MB in the beginning and 105.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 07:10:06,636 INFO L158 Benchmark]: RCFGBuilder took 621.55ms. Allocated memory is still 176.2MB. Free memory was 105.2MB in the beginning and 75.2MB in the end (delta: 30.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-13 07:10:06,637 INFO L158 Benchmark]: TraceAbstraction took 1699.49ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 74.5MB in the beginning and 122.2MB in the end (delta: -47.7MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2024-10-13 07:10:06,637 INFO L158 Benchmark]: Witness Printer took 86.34ms. Allocated memory is still 260.0MB. Free memory was 122.2MB in the beginning and 117.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-13 07:10:06,640 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 176.2MB. Free memory is still 140.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.69ms. Allocated memory is still 176.2MB. Free memory was 121.3MB in the beginning and 108.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.58ms. Allocated memory is still 176.2MB. Free memory was 108.7MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.73ms. Allocated memory is still 176.2MB. Free memory was 106.7MB in the beginning and 105.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 621.55ms. Allocated memory is still 176.2MB. Free memory was 105.2MB in the beginning and 75.2MB in the end (delta: 30.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1699.49ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 74.5MB in the beginning and 122.2MB in the end (delta: -47.7MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Witness Printer took 86.34ms. Allocated memory is still 260.0MB. Free memory was 122.2MB in the beginning and 117.0MB 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: 102]: 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, 43 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: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 143 IncrementalHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 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! [2024-10-13 07:10:06,671 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