./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/parallel-barrier-loop.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 a107795e01eed1ee79fba30cb5022ee32b5d5a3711e8a094ab0bb165fd3efa7a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:21:49,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:21:49,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:21:49,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:21:49,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:21:49,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:21:49,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:21:49,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:21:49,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:21:49,795 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:21:49,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:21:49,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:21:49,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:21:49,796 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:21:49,797 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:21:49,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:21:49,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:21:49,798 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:21:49,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:21:49,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:21:49,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:21:49,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:21:49,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:21:49,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:21:49,803 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:21:49,803 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:21:49,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:21:49,804 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:21:49,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:21:49,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:21:49,804 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:21:49,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:21:49,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:21:49,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:21:49,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:21:49,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:21:49,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:21:49,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:21:49,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:21:49,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:21:49,806 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:21:49,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:21:49,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a107795e01eed1ee79fba30cb5022ee32b5d5a3711e8a094ab0bb165fd3efa7a [2024-11-12 08:21:50,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:21:50,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:21:50,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:21:50,051 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:21:50,052 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:21:50,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2024-11-12 08:21:51,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:21:51,801 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:21:51,802 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2024-11-12 08:21:51,823 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af28e1ca/f57d490fecb046f39cce2502f3c9338e/FLAGc3962f1ff [2024-11-12 08:21:52,160 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af28e1ca/f57d490fecb046f39cce2502f3c9338e [2024-11-12 08:21:52,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:21:52,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:21:52,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:21:52,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:21:52,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:21:52,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab17e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52, skipping insertion in model container [2024-11-12 08:21:52,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,218 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:21:52,443 WARN L250 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-barrier-loop.wvr.c[3922,3935] [2024-11-12 08:21:52,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:21:52,463 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:21:52,500 WARN L250 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-barrier-loop.wvr.c[3922,3935] [2024-11-12 08:21:52,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:21:52,528 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:21:52,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52 WrapperNode [2024-11-12 08:21:52,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:21:52,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:21:52,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:21:52,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:21:52,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,578 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 227 [2024-11-12 08:21:52,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:21:52,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:21:52,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:21:52,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:21:52,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,616 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]. [2024-11-12 08:21:52,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:21:52,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:21:52,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:21:52,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:21:52,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (1/1) ... [2024-11-12 08:21:52,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:21:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:21:52,670 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) [2024-11-12 08:21:52,677 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 [2024-11-12 08:21:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:21:52,721 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:21:52,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:21:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:21:52,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:21:52,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:21:52,722 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:21:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-12 08:21:52,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-12 08:21:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:21:52,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-12 08:21:52,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-12 08:21:52,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-12 08:21:52,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-12 08:21:52,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:21:52,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:21:52,726 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:21:52,851 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:21:52,853 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:21:53,166 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:21:53,166 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:21:53,281 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:21:53,282 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 08:21:53,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:21:53 BoogieIcfgContainer [2024-11-12 08:21:53,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:21:53,284 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:21:53,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:21:53,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:21:53,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:21:52" (1/3) ... [2024-11-12 08:21:53,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ae2c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:21:53, skipping insertion in model container [2024-11-12 08:21:53,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:21:52" (2/3) ... [2024-11-12 08:21:53,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ae2c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:21:53, skipping insertion in model container [2024-11-12 08:21:53,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:21:53" (3/3) ... [2024-11-12 08:21:53,289 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier-loop.wvr.c [2024-11-12 08:21:53,302 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:21:53,302 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:21:53,302 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:21:53,397 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-11-12 08:21:53,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 112 transitions, 290 flow [2024-11-12 08:21:53,470 INFO L124 PetriNetUnfolderBase]: 12/100 cut-off events. [2024-11-12 08:21:53,471 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-12 08:21:53,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 100 events. 12/100 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 235 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 3 conditions per place. [2024-11-12 08:21:53,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 112 transitions, 290 flow [2024-11-12 08:21:53,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 99 transitions, 246 flow [2024-11-12 08:21:53,487 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:21:53,494 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;@1bd987d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:21:53,495 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-12 08:21:53,544 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:21:53,546 INFO L124 PetriNetUnfolderBase]: 12/98 cut-off events. [2024-11-12 08:21:53,546 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-12 08:21:53,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:21:53,547 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:21:53,548 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-12 08:21:53,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:21:53,553 INFO L85 PathProgramCache]: Analyzing trace with hash -43939636, now seen corresponding path program 1 times [2024-11-12 08:21:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:21:53,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646037153] [2024-11-12 08:21:53,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:21:53,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:21:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:21:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:21:53,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:21:53,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646037153] [2024-11-12 08:21:53,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646037153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:21:53,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:21:53,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:21:53,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859599002] [2024-11-12 08:21:53,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:21:53,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 08:21:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:21:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 08:21:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 08:21:53,805 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 116 [2024-11-12 08:21:53,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 99 transitions, 246 flow. Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2024-11-12 08:21:53,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:21:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 116 [2024-11-12 08:21:53,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:22:06,793 INFO L124 PetriNetUnfolderBase]: 133137/182039 cut-off events. [2024-11-12 08:22:06,795 INFO L125 PetriNetUnfolderBase]: For 14088/14088 co-relation queries the response was YES. [2024-11-12 08:22:07,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362326 conditions, 182039 events. 133137/182039 cut-off events. For 14088/14088 co-relation queries the response was YES. Maximal size of possible extension queue 5901. Compared 1308012 event pairs, 113708 based on Foata normal form. 0/155730 useless extension candidates. Maximal degree in co-relation 361278. Up to 164047 conditions per place. [2024-11-12 08:22:08,299 INFO L140 encePairwiseOnDemand]: 112/116 looper letters, 62 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2024-11-12 08:22:08,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 362 flow [2024-11-12 08:22:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 08:22:08,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 08:22:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 144 transitions. [2024-11-12 08:22:08,310 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-11-12 08:22:08,311 INFO L175 Difference]: Start difference. First operand has 106 places, 99 transitions, 246 flow. Second operand 2 states and 144 transitions. [2024-11-12 08:22:08,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 362 flow [2024-11-12 08:22:08,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 330 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-12 08:22:08,828 INFO L231 Difference]: Finished difference. Result has 95 places, 95 transitions, 206 flow [2024-11-12 08:22:08,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2024-11-12 08:22:08,832 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -11 predicate places. [2024-11-12 08:22:08,832 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 206 flow [2024-11-12 08:22:08,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 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) [2024-11-12 08:22:08,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:22:08,833 INFO L206 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, 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] [2024-11-12 08:22:08,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:22:08,834 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-12 08:22:08,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:22:08,835 INFO L85 PathProgramCache]: Analyzing trace with hash 219855244, now seen corresponding path program 1 times [2024-11-12 08:22:08,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:22:08,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565184085] [2024-11-12 08:22:08,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:22:08,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:22:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:22:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:22:09,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:22:09,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565184085] [2024-11-12 08:22:09,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565184085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:22:09,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:22:09,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:22:09,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414384369] [2024-11-12 08:22:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:22:09,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:22:09,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:22:09,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:22:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:22:09,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 116 [2024-11-12 08:22:09,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-11-12 08:22:09,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:22:09,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 116 [2024-11-12 08:22:09,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand