./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/pthread-deagle/arithmetic_prog_ok.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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:38:18,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:38:19,054 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:38:19,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:38:19,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:38:19,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:38:19,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:38:19,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:38:19,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:38:19,096 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:38:19,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:38:19,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:38:19,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:38:19,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:38:19,098 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:38:19,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:38:19,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:38:19,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:38:19,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:38:19,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:38:19,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:38:19,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:38:19,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:38:19,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:38:19,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:38:19,102 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:38:19,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:38:19,102 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:38:19,103 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:38:19,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:38:19,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:38:19,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:38:19,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:38:19,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:38:19,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:38:19,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:38:19,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:38:19,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:38:19,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:38:19,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:38:19,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:38:19,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:38:19,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2024-11-10 10:38:19,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:38:19,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:38:19,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:38:19,326 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:38:19,326 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:38:19,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-10 10:38:20,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:38:20,770 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:38:20,770 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-10 10:38:20,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e48a45619/17c49452a67848b582657a25ae5b3783/FLAG89d3acfb8 [2024-11-10 10:38:20,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e48a45619/17c49452a67848b582657a25ae5b3783 [2024-11-10 10:38:20,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:38:20,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:38:20,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:38:20,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:38:20,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:38:20,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:38:20" (1/1) ... [2024-11-10 10:38:20,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55660791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:20, skipping insertion in model container [2024-11-10 10:38:20,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:38:20" (1/1) ... [2024-11-10 10:38:20,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:38:21,134 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/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-11-10 10:38:21,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:38:21,153 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:38:21,186 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/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-11-10 10:38:21,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:38:21,228 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:38:21,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21 WrapperNode [2024-11-10 10:38:21,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:38:21,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:38:21,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:38:21,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:38:21,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,283 INFO L138 Inliner]: procedures = 243, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 260 [2024-11-10 10:38:21,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:38:21,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:38:21,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:38:21,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:38:21,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,311 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-11-10 10:38:21,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,320 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:38:21,328 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:38:21,328 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:38:21,328 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:38:21,329 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (1/1) ... [2024-11-10 10:38:21,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:38:21,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:38:21,358 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) [2024-11-10 10:38:21,360 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 [2024-11-10 10:38:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 10:38:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 10:38:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 10:38:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:38:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:38:21,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:38:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:38:21,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:38:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:38:21,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:38:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:38:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:38:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 10:38:21,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:38:21,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:38:21,394 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:38:21,517 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:38:21,519 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:38:21,839 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:38:21,839 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:38:22,389 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:38:22,390 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:38:22,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:38:22 BoogieIcfgContainer [2024-11-10 10:38:22,390 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:38:22,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:38:22,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:38:22,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:38:22,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:38:20" (1/3) ... [2024-11-10 10:38:22,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532f2d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:38:22, skipping insertion in model container [2024-11-10 10:38:22,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:38:21" (2/3) ... [2024-11-10 10:38:22,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532f2d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:38:22, skipping insertion in model container [2024-11-10 10:38:22,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:38:22" (3/3) ... [2024-11-10 10:38:22,396 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-11-10 10:38:22,408 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:38:22,408 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:38:22,408 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:38:22,451 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:38:22,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 50 transitions, 114 flow [2024-11-10 10:38:22,534 INFO L124 PetriNetUnfolderBase]: 10/48 cut-off events. [2024-11-10 10:38:22,534 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:38:22,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 10/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2024-11-10 10:38:22,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 50 transitions, 114 flow [2024-11-10 10:38:22,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 44 transitions, 100 flow [2024-11-10 10:38:22,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:38:22,556 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;@4e98a34c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:38:22,557 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-10 10:38:22,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:38:22,602 INFO L124 PetriNetUnfolderBase]: 8/43 cut-off events. [2024-11-10 10:38:22,602 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:38:22,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:38:22,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:38:22,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:38:22,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:38:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash -438539468, now seen corresponding path program 1 times [2024-11-10 10:38:22,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:38:22,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449057426] [2024-11-10 10:38:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:22,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:38:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:38:23,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:38:23,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449057426] [2024-11-10 10:38:23,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449057426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:38:23,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:38:23,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:38:23,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428294730] [2024-11-10 10:38:23,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:38:23,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:38:23,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:38:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:38:23,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:38:23,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-10 10:38:23,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:38:23,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:38:23,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-10 10:38:23,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:38:23,319 INFO L124 PetriNetUnfolderBase]: 264/538 cut-off events. [2024-11-10 10:38:23,319 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 10:38:23,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 538 events. 264/538 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2677 event pairs, 167 based on Foata normal form. 88/521 useless extension candidates. Maximal degree in co-relation 914. Up to 412 conditions per place. [2024-11-10 10:38:23,324 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 24 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2024-11-10 10:38:23,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 140 flow [2024-11-10 10:38:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:38:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:38:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2024-11-10 10:38:23,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-11-10 10:38:23,335 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 100 flow. Second operand 2 states and 68 transitions. [2024-11-10 10:38:23,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 140 flow [2024-11-10 10:38:23,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 132 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:38:23,343 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 84 flow [2024-11-10 10:38:23,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-11-10 10:38:23,346 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-10 10:38:23,347 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 84 flow [2024-11-10 10:38:23,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:38:23,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:38:23,347 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:38:23,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:38:23,347 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:38:23,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:38:23,348 INFO L85 PathProgramCache]: Analyzing trace with hash -311332983, now seen corresponding path program 1 times [2024-11-10 10:38:23,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:38:23,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647302940] [2024-11-10 10:38:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:23,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:38:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:38:23,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:38:23,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647302940] [2024-11-10 10:38:23,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647302940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:38:23,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:38:23,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:38:23,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620868091] [2024-11-10 10:38:23,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:38:23,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:38:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:38:23,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:38:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:38:23,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-11-10 10:38:23,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-10 10:38:23,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:38:23,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-11-10 10:38:23,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:38:23,884 INFO L124 PetriNetUnfolderBase]: 482/965 cut-off events. [2024-11-10 10:38:23,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:38:23,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1726 conditions, 965 events. 482/965 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4975 event pairs, 203 based on Foata normal form. 16/837 useless extension candidates. Maximal degree in co-relation 1723. Up to 474 conditions per place. [2024-11-10 10:38:23,890 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 40 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-10 10:38:23,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 203 flow [2024-11-10 10:38:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:38:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:38:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-10 10:38:23,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 10:38:23,892 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 84 flow. Second operand 3 states and 100 transitions. [2024-11-10 10:38:23,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 203 flow [2024-11-10 10:38:23,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 203 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:38:23,894 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 96 flow [2024-11-10 10:38:23,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2024-11-10 10:38:23,895 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-11-10 10:38:23,895 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 96 flow [2024-11-10 10:38:23,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-10 10:38:23,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:38:23,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-10 10:38:23,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:38:23,897 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:38:23,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:38:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash 587831826, now seen corresponding path program 1 times [2024-11-10 10:38:23,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:38:23,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767742683] [2024-11-10 10:38:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:38:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:38:24,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:38:24,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767742683] [2024-11-10 10:38:24,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767742683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:38:24,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:38:24,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:38:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790369103] [2024-11-10 10:38:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:38:24,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:38:24,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:38:24,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:38:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:38:24,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-11-10 10:38:24,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-10 10:38:24,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:38:24,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-11-10 10:38:24,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:38:24,362 INFO L124 PetriNetUnfolderBase]: 787/1665 cut-off events. [2024-11-10 10:38:24,362 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-11-10 10:38:24,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 1665 events. 787/1665 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10033 event pairs, 338 based on Foata normal form. 29/1500 useless extension candidates. Maximal degree in co-relation 3016. Up to 770 conditions per place. [2024-11-10 10:38:24,369 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 41 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-10 10:38:24,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 225 flow [2024-11-10 10:38:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:38:24,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:38:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-10 10:38:24,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-11-10 10:38:24,371 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 96 flow. Second operand 3 states and 99 transitions. [2024-11-10 10:38:24,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 225 flow [2024-11-10 10:38:24,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:38:24,375 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 106 flow [2024-11-10 10:38:24,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-11-10 10:38:24,376 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-11-10 10:38:24,376 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 106 flow [2024-11-10 10:38:24,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-11-10 10:38:24,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:38:24,376 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-10 10:38:24,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:38:24,377 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:38:24,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:38:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1468086728, now seen corresponding path program 1 times [2024-11-10 10:38:24,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:38:24,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839771480] [2024-11-10 10:38:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:24,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:38:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:38:24,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:38:24,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839771480] [2024-11-10 10:38:24,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839771480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:38:24,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573400597] [2024-11-10 10:38:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:24,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:38:24,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:38:24,645 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) [2024-11-10 10:38:24,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:38:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:24,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 10:38:24,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:38:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:38:25,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:38:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:38:25,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573400597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:38:25,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:38:25,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-10 10:38:25,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450980775] [2024-11-10 10:38:25,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:38:25,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:38:25,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:38:25,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:38:25,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:38:25,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-11-10 10:38:25,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2024-11-10 10:38:25,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:38:25,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-11-10 10:38:25,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:38:25,407 INFO L124 PetriNetUnfolderBase]: 1563/3109 cut-off events. [2024-11-10 10:38:25,407 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-11-10 10:38:25,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5907 conditions, 3109 events. 1563/3109 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18384 event pairs, 159 based on Foata normal form. 87/3008 useless extension candidates. Maximal degree in co-relation 5901. Up to 536 conditions per place. [2024-11-10 10:38:25,419 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 87 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-10 10:38:25,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 107 transitions, 454 flow [2024-11-10 10:38:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:38:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:38:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-10 10:38:25,421 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6633333333333333 [2024-11-10 10:38:25,421 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 106 flow. Second operand 6 states and 199 transitions. [2024-11-10 10:38:25,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 107 transitions, 454 flow [2024-11-10 10:38:25,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 107 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:38:25,423 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 144 flow [2024-11-10 10:38:25,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-11-10 10:38:25,424 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-10 10:38:25,424 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 144 flow [2024-11-10 10:38:25,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2024-11-10 10:38:25,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:38:25,425 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:38:25,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 10:38:25,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:38:25,629 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:38:25,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:38:25,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1320139332, now seen corresponding path program 2 times [2024-11-10 10:38:25,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:38:25,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152505293] [2024-11-10 10:38:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:25,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:38:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-10 10:38:25,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:38:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152505293] [2024-11-10 10:38:25,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152505293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:38:25,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:38:25,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:38:25,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780975700] [2024-11-10 10:38:25,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:38:25,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:38:25,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:38:25,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:38:25,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:38:25,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-10 10:38:25,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-10 10:38:25,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:38:25,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-10 10:38:25,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:38:26,118 INFO L124 PetriNetUnfolderBase]: 776/2020 cut-off events. [2024-11-10 10:38:26,119 INFO L125 PetriNetUnfolderBase]: For 774/774 co-relation queries the response was YES. [2024-11-10 10:38:26,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 2020 events. 776/2020 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 11645 event pairs, 343 based on Foata normal form. 128/2002 useless extension candidates. Maximal degree in co-relation 3990. Up to 650 conditions per place. [2024-11-10 10:38:26,128 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 34 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-11-10 10:38:26,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 292 flow [2024-11-10 10:38:26,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:38:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:38:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-10 10:38:26,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6533333333333333 [2024-11-10 10:38:26,130 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 144 flow. Second operand 3 states and 98 transitions. [2024-11-10 10:38:26,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 292 flow [2024-11-10 10:38:26,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 276 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-10 10:38:26,133 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 152 flow [2024-11-10 10:38:26,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-11-10 10:38:26,134 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-10 10:38:26,134 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 152 flow [2024-11-10 10:38:26,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-10 10:38:26,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:38:26,134 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:38:26,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:38:26,135 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:38:26,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:38:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1250204038, now seen corresponding path program 3 times [2024-11-10 10:38:26,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:38:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109018862] [2024-11-10 10:38:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:26,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:38:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 10:38:26,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:38:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109018862] [2024-11-10 10:38:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109018862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:38:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200248697] [2024-11-10 10:38:26,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:38:26,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:38:26,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:38:26,406 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) [2024-11-10 10:38:26,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:38:26,741 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:38:26,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:38:26,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 10:38:26,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:38:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 10:38:26,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:38:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 10:38:26,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200248697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:38:26,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:38:26,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-10 10:38:26,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741162031] [2024-11-10 10:38:26,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:38:26,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:38:26,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:38:26,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:38:26,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:38:26,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-11-10 10:38:26,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-11-10 10:38:26,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:38:26,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-11-10 10:38:26,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:38:27,195 INFO L124 PetriNetUnfolderBase]: 1957/4664 cut-off events. [2024-11-10 10:38:27,195 INFO L125 PetriNetUnfolderBase]: For 1900/1906 co-relation queries the response was YES. [2024-11-10 10:38:27,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10223 conditions, 4664 events. 1957/4664 cut-off events. For 1900/1906 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 30855 event pairs, 319 based on Foata normal form. 168/4425 useless extension candidates. Maximal degree in co-relation 10213. Up to 719 conditions per place. [2024-11-10 10:38:27,217 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 101 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2024-11-10 10:38:27,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 122 transitions, 664 flow [2024-11-10 10:38:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:38:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:38:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-11-10 10:38:27,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6766666666666666 [2024-11-10 10:38:27,219 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 152 flow. Second operand 6 states and 203 transitions. [2024-11-10 10:38:27,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 122 transitions, 664 flow [2024-11-10 10:38:27,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 122 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:38:27,225 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 184 flow [2024-11-10 10:38:27,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-11-10 10:38:27,225 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-11-10 10:38:27,226 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 184 flow [2024-11-10 10:38:27,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-11-10 10:38:27,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:38:27,226 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:38:27,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:38:27,426 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,SelfDestructingSolverStorable5 [2024-11-10 10:38:27,427 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:38:27,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:38:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1643815831, now seen corresponding path program 4 times [2024-11-10 10:38:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:38:27,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112118037] [2024-11-10 10:38:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:27,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:38:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-10 10:38:27,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:38:27,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112118037] [2024-11-10 10:38:27,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112118037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:38:27,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483196926] [2024-11-10 10:38:27,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:38:27,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:38:27,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:38:27,804 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) [2024-11-10 10:38:27,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:38:28,168 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:38:28,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:38:28,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 10:38:28,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:38:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-10 10:38:28,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:38:28,238 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-10 10:38:28,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483196926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:38:28,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:38:28,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 4 [2024-11-10 10:38:28,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566448812] [2024-11-10 10:38:28,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:38:28,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:38:28,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:38:28,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:38:28,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:38:28,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-10 10:38:28,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-11-10 10:38:28,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:38:28,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-10 10:38:28,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:38:28,400 INFO L124 PetriNetUnfolderBase]: 599/1565 cut-off events. [2024-11-10 10:38:28,400 INFO L125 PetriNetUnfolderBase]: For 1138/1150 co-relation queries the response was YES. [2024-11-10 10:38:28,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3627 conditions, 1565 events. 599/1565 cut-off events. For 1138/1150 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7263 event pairs, 189 based on Foata normal form. 0/1537 useless extension candidates. Maximal degree in co-relation 3613. Up to 578 conditions per place. [2024-11-10 10:38:28,408 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 52 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-11-10 10:38:28,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 386 flow [2024-11-10 10:38:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:38:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:38:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-10 10:38:28,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-10 10:38:28,410 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 184 flow. Second operand 4 states and 111 transitions. [2024-11-10 10:38:28,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 386 flow [2024-11-10 10:38:28,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 371 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-10 10:38:28,414 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 195 flow [2024-11-10 10:38:28,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2024-11-10 10:38:28,415 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-11-10 10:38:28,418 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 195 flow [2024-11-10 10:38:28,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-11-10 10:38:28,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:38:28,418 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:38:28,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 10:38:28,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:38:28,619 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:38:28,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:38:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1265981139, now seen corresponding path program 5 times [2024-11-10 10:38:28,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:38:28,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363098558] [2024-11-10 10:38:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:28,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:38:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:38:29,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:38:29,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363098558] [2024-11-10 10:38:29,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363098558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:38:29,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328100195] [2024-11-10 10:38:29,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:38:29,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:38:29,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:38:29,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:38:29,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:38:29,632 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-10 10:38:29,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:38:29,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 10:38:29,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:38:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:38:29,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:38:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:38:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328100195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:38:30,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:38:30,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 31 [2024-11-10 10:38:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465750504] [2024-11-10 10:38:30,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:38:30,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 10:38:30,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:38:30,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 10:38:30,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2024-11-10 10:38:30,699 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-10 10:38:30,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 195 flow. Second operand has 32 states, 32 states have (on average 21.09375) internal successors, (675), 32 states have internal predecessors, (675), 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) [2024-11-10 10:38:30,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:38:30,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-10 10:38:30,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:38:31,626 INFO L124 PetriNetUnfolderBase]: 635/1639 cut-off events. [2024-11-10 10:38:31,627 INFO L125 PetriNetUnfolderBase]: For 1269/1278 co-relation queries the response was YES. [2024-11-10 10:38:31,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 1639 events. 635/1639 cut-off events. For 1269/1278 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 7688 event pairs, 64 based on Foata normal form. 30/1641 useless extension candidates. Maximal degree in co-relation 3970. Up to 247 conditions per place. [2024-11-10 10:38:31,632 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 0 selfloop transitions, 0 changer transitions 138/138 dead transitions. [2024-11-10 10:38:31,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 138 transitions, 777 flow [2024-11-10 10:38:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:38:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:38:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 324 transitions. [2024-11-10 10:38:31,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-11-10 10:38:31,633 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 195 flow. Second operand 12 states and 324 transitions. [2024-11-10 10:38:31,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 138 transitions, 777 flow [2024-11-10 10:38:31,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 745 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:38:31,636 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2024-11-10 10:38:31,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2024-11-10 10:38:31,637 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-11-10 10:38:31,637 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2024-11-10 10:38:31,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 21.09375) internal successors, (675), 32 states have internal predecessors, (675), 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) [2024-11-10 10:38:31,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-10 10:38:31,642 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-10 10:38:31,644 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-10 10:38:31,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 10:38:31,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:38:31,846 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2024-11-10 10:38:31,848 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:38:31,848 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:38:31,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:38:31 BasicIcfg [2024-11-10 10:38:31,852 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:38:31,852 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:38:31,852 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:38:31,852 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:38:31,852 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:38:22" (3/4) ... [2024-11-10 10:38:31,854 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:38:31,856 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 10:38:31,857 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 10:38:31,863 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 142 nodes and edges [2024-11-10 10:38:31,864 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 69 nodes and edges [2024-11-10 10:38:31,864 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-11-10 10:38:31,864 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-10 10:38:31,865 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-10 10:38:31,865 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-10 10:38:31,865 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 10:38:31,969 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:38:31,969 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:38:31,969 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:38:31,970 INFO L158 Benchmark]: Toolchain (without parser) took 11171.40ms. Allocated memory was 184.5MB in the beginning and 614.5MB in the end (delta: 429.9MB). Free memory was 125.3MB in the beginning and 277.2MB in the end (delta: -151.9MB). Peak memory consumption was 280.1MB. Max. memory is 16.1GB. [2024-11-10 10:38:31,970 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:38:31,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.37ms. Allocated memory is still 184.5MB. Free memory was 124.9MB in the beginning and 94.3MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-10 10:38:31,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.62ms. Allocated memory is still 184.5MB. Free memory was 94.3MB in the beginning and 90.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:38:31,971 INFO L158 Benchmark]: Boogie Preprocessor took 42.29ms. Allocated memory is still 184.5MB. Free memory was 90.9MB in the beginning and 87.6MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:38:31,971 INFO L158 Benchmark]: IcfgBuilder took 1062.01ms. Allocated memory was 184.5MB in the beginning and 281.0MB in the end (delta: 96.5MB). Free memory was 87.1MB in the beginning and 179.6MB in the end (delta: -92.5MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. [2024-11-10 10:38:31,971 INFO L158 Benchmark]: TraceAbstraction took 9460.52ms. Allocated memory was 281.0MB in the beginning and 614.5MB in the end (delta: 333.4MB). Free memory was 179.6MB in the beginning and 284.1MB in the end (delta: -104.5MB). Peak memory consumption was 228.5MB. Max. memory is 16.1GB. [2024-11-10 10:38:31,971 INFO L158 Benchmark]: Witness Printer took 117.29ms. Allocated memory is still 614.5MB. Free memory was 284.1MB in the beginning and 277.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-10 10:38:31,972 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.37ms. Allocated memory is still 184.5MB. Free memory was 124.9MB in the beginning and 94.3MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.62ms. Allocated memory is still 184.5MB. Free memory was 94.3MB in the beginning and 90.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.29ms. Allocated memory is still 184.5MB. Free memory was 90.9MB in the beginning and 87.6MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 1062.01ms. Allocated memory was 184.5MB in the beginning and 281.0MB in the end (delta: 96.5MB). Free memory was 87.1MB in the beginning and 179.6MB in the end (delta: -92.5MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9460.52ms. Allocated memory was 281.0MB in the beginning and 614.5MB in the end (delta: 333.4MB). Free memory was 179.6MB in the beginning and 284.1MB in the end (delta: -104.5MB). Peak memory consumption was 228.5MB. Max. memory is 16.1GB. * Witness Printer took 117.29ms. Allocated memory is still 614.5MB. Free memory was 284.1MB in the beginning and 277.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 919]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 71 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.4s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 374 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2886 IncrementalHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 7 mSDtfsCounter, 2886 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 541 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=7, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 682 NumberOfCodeBlocks, 663 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 945 ConstructedInterpolants, 0 QuantifiedInterpolants, 3450 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1937 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 624/1014 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 10:38:31,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE