./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:25:10,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:25:10,576 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:25:10,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:25:10,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:25:10,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:25:10,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:25:10,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:25:10,619 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:25:10,619 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:25:10,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:25:10,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:25:10,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:25:10,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:25:10,621 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:25:10,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:25:10,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:25:10,622 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:25:10,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:25:10,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:25:10,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:25:10,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:25:10,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:25:10,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:25:10,629 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:25:10,629 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:25:10,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:25:10,630 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:25:10,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:25:10,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:25:10,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:25:10,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:25:10,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:25:10,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:25:10,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:25:10,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:25:10,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:25:10,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:25:10,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:25:10,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:25:10,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:25:10,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:25:10,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2024-10-24 12:25:10,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:25:10,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:25:10,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:25:10,942 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:25:10,943 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:25:10,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-10-24 12:25:12,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:25:12,806 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:25:12,807 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2024-10-24 12:25:12,833 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5158b24ef/81c324a19edb4102a5fc98fb2e19bf5d/FLAG4ed424dcd [2024-10-24 12:25:12,854 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5158b24ef/81c324a19edb4102a5fc98fb2e19bf5d [2024-10-24 12:25:12,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:25:12,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:25:12,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:25:12,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:25:12,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:25:12,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:25:12" (1/1) ... [2024-10-24 12:25:12,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ede556f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:12, skipping insertion in model container [2024-10-24 12:25:12,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:25:12" (1/1) ... [2024-10-24 12:25:12,931 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:25:13,438 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/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2024-10-24 12:25:13,467 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:13,468 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:13,468 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:13,468 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:13,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:25:13,512 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:25:13,561 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/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2024-10-24 12:25:13,564 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:13,565 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:13,565 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:13,566 WARN L1660 CHandler]: Possible shadowing of function new [2024-10-24 12:25:13,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:25:13,626 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:25:13,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13 WrapperNode [2024-10-24 12:25:13,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:25:13,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:25:13,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:25:13,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:25:13,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,688 INFO L138 Inliner]: procedures = 278, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2024-10-24 12:25:13,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:25:13,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:25:13,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:25:13,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:25:13,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,733 INFO L175 MemorySlicer]: Split 28 memory accesses to 4 slices as follows [2, 2, 5, 19]. 68 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 14 writes are split as follows [0, 1, 0, 13]. [2024-10-24 12:25:13,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:25:13,771 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:25:13,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:25:13,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:25:13,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (1/1) ... [2024-10-24 12:25:13,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:25:13,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:13,817 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) [2024-10-24 12:25:13,827 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 [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:25:13,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:25:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:25:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:25:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:25:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:25:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:25:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 12:25:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 12:25:13,876 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:25:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:25:13,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:25:13,879 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:25:14,104 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:25:14,106 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:25:14,508 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:25:14,508 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:25:14,854 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:25:14,854 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-24 12:25:14,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:25:14 BoogieIcfgContainer [2024-10-24 12:25:14,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:25:14,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:25:14,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:25:14,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:25:14,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:25:12" (1/3) ... [2024-10-24 12:25:14,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726021dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:25:14, skipping insertion in model container [2024-10-24 12:25:14,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:25:13" (2/3) ... [2024-10-24 12:25:14,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726021dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:25:14, skipping insertion in model container [2024-10-24 12:25:14,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:25:14" (3/3) ... [2024-10-24 12:25:14,866 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2024-10-24 12:25:14,881 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:25:14,881 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:25:14,881 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:25:14,929 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 12:25:14,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 60 transitions, 127 flow [2024-10-24 12:25:15,007 INFO L124 PetriNetUnfolderBase]: 17/64 cut-off events. [2024-10-24 12:25:15,008 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 12:25:15,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 64 events. 17/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2024-10-24 12:25:15,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 60 transitions, 127 flow [2024-10-24 12:25:15,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 58 transitions, 120 flow [2024-10-24 12:25:15,027 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:25:15,037 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;@7aedb8ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:25:15,037 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-24 12:25:15,047 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:25:15,047 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-10-24 12:25:15,047 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:25:15,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:15,048 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 12:25:15,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:15,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash 324870064, now seen corresponding path program 1 times [2024-10-24 12:25:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:15,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832103076] [2024-10-24 12:25:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:15,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832103076] [2024-10-24 12:25:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832103076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:25:15,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:25:15,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:25:15,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615037860] [2024-10-24 12:25:15,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:25:15,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:25:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:15,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:25:15,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:25:15,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-24 12:25:15,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:25:15,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:15,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-24 12:25:15,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:15,680 INFO L124 PetriNetUnfolderBase]: 116/321 cut-off events. [2024-10-24 12:25:15,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:25:15,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 321 events. 116/321 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1308 event pairs, 95 based on Foata normal form. 42/305 useless extension candidates. Maximal degree in co-relation 531. Up to 237 conditions per place. [2024-10-24 12:25:15,687 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-10-24 12:25:15,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 174 flow [2024-10-24 12:25:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:25:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:25:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-10-24 12:25:15,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-10-24 12:25:15,701 INFO L175 Difference]: Start difference. First operand has 45 places, 58 transitions, 120 flow. Second operand 3 states and 92 transitions. [2024-10-24 12:25:15,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 174 flow [2024-10-24 12:25:15,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 12:25:15,706 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 110 flow [2024-10-24 12:25:15,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-10-24 12:25:15,711 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-10-24 12:25:15,712 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 110 flow [2024-10-24 12:25:15,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:25:15,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:15,712 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:25:15,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:25:15,713 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:15,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash 521651503, now seen corresponding path program 1 times [2024-10-24 12:25:15,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:15,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852363189] [2024-10-24 12:25:15,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:15,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852363189] [2024-10-24 12:25:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852363189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:25:15,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:25:15,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:25:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533663447] [2024-10-24 12:25:15,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:25:15,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:25:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:15,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:25:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:25:15,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-24 12:25:15,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-24 12:25:15,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:15,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-24 12:25:15,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:16,099 INFO L124 PetriNetUnfolderBase]: 116/323 cut-off events. [2024-10-24 12:25:16,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:25:16,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 323 events. 116/323 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1311 event pairs, 95 based on Foata normal form. 2/270 useless extension candidates. Maximal degree in co-relation 558. Up to 240 conditions per place. [2024-10-24 12:25:16,102 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-10-24 12:25:16,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 180 flow [2024-10-24 12:25:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:25:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:25:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-10-24 12:25:16,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-10-24 12:25:16,104 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 110 flow. Second operand 3 states and 79 transitions. [2024-10-24 12:25:16,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 180 flow [2024-10-24 12:25:16,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:25:16,107 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 122 flow [2024-10-24 12:25:16,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-10-24 12:25:16,108 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-10-24 12:25:16,108 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 122 flow [2024-10-24 12:25:16,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-10-24 12:25:16,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:16,109 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:25:16,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:25:16,110 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:16,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1008072150, now seen corresponding path program 1 times [2024-10-24 12:25:16,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:16,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115566630] [2024-10-24 12:25:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:16,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:16,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:16,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:16,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115566630] [2024-10-24 12:25:16,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115566630] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:25:16,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838253696] [2024-10-24 12:25:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:16,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:16,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:25:16,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:25:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:16,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:25:16,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:25:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:16,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:25:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:16,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838253696] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:25:16,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:25:16,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-24 12:25:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917180860] [2024-10-24 12:25:16,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:25:16,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:25:16,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:16,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:25:16,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:25:16,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-24 12:25:16,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-24 12:25:16,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:16,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-24 12:25:16,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:17,103 INFO L124 PetriNetUnfolderBase]: 116/329 cut-off events. [2024-10-24 12:25:17,104 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 12:25:17,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 329 events. 116/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1325 event pairs, 95 based on Foata normal form. 6/280 useless extension candidates. Maximal degree in co-relation 565. Up to 240 conditions per place. [2024-10-24 12:25:17,109 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 32 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2024-10-24 12:25:17,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 208 flow [2024-10-24 12:25:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:25:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:25:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-10-24 12:25:17,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-10-24 12:25:17,112 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 122 flow. Second operand 6 states and 129 transitions. [2024-10-24 12:25:17,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 208 flow [2024-10-24 12:25:17,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 204 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 12:25:17,116 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 160 flow [2024-10-24 12:25:17,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-24 12:25:17,118 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-24 12:25:17,118 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 160 flow [2024-10-24 12:25:17,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 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) [2024-10-24 12:25:17,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:17,119 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:25:17,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 12:25:17,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:17,321 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:17,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2056112401, now seen corresponding path program 2 times [2024-10-24 12:25:17,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:17,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121639030] [2024-10-24 12:25:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 12:25:17,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:17,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121639030] [2024-10-24 12:25:17,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121639030] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:25:17,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938195861] [2024-10-24 12:25:17,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:25:17,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:17,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:17,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:25:17,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:25:17,931 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:25:17,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:25:17,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:25:17,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:25:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:18,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:25:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:25:18,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938195861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:25:18,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:25:18,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2024-10-24 12:25:18,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509154574] [2024-10-24 12:25:18,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:25:18,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 12:25:18,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:25:18,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 12:25:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:25:18,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-24 12:25:18,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 160 flow. Second operand has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2024-10-24 12:25:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:25:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-24 12:25:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:25:19,180 INFO L124 PetriNetUnfolderBase]: 117/354 cut-off events. [2024-10-24 12:25:19,181 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-10-24 12:25:19,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 354 events. 117/354 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1390 event pairs, 95 based on Foata normal form. 19/318 useless extension candidates. Maximal degree in co-relation 561. Up to 237 conditions per place. [2024-10-24 12:25:19,183 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 32 selfloop transitions, 36 changer transitions 0/83 dead transitions. [2024-10-24 12:25:19,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 496 flow [2024-10-24 12:25:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-24 12:25:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-24 12:25:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 597 transitions. [2024-10-24 12:25:19,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2926470588235294 [2024-10-24 12:25:19,189 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 160 flow. Second operand 34 states and 597 transitions. [2024-10-24 12:25:19,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 496 flow [2024-10-24 12:25:19,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 454 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-10-24 12:25:19,194 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 452 flow [2024-10-24 12:25:19,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=452, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-10-24 12:25:19,195 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-10-24 12:25:19,195 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 452 flow [2024-10-24 12:25:19,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.571428571428573) internal successors, (232), 14 states have internal predecessors, (232), 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) [2024-10-24 12:25:19,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:25:19,196 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 12:25:19,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:25:19,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-24 12:25:19,397 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:25:19,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:25:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1493435630, now seen corresponding path program 3 times [2024-10-24 12:25:19,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:25:19,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484072846] [2024-10-24 12:25:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:25:19,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:25:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:25:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 123 proven. 55 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-24 12:25:20,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:25:20,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484072846] [2024-10-24 12:25:20,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484072846] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:25:20,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833990842] [2024-10-24 12:25:20,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:25:20,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:25:20,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:25:20,853 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:25:20,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process