./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 3061b6dc 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.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:56:20,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:56:21,062 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:56:21,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:56:21,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:56:21,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:56:21,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:56:21,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:56:21,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:56:21,095 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:56:21,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:56:21,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:56:21,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:56:21,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:56:21,098 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:56:21,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:56:21,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:56:21,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:56:21,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:56:21,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:56:21,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:56:21,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:56:21,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:56:21,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:56:21,103 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:56:21,103 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:56:21,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:56:21,104 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:56:21,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:56:21,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:56:21,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:56:21,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:56:21,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:56:21,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:56:21,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:56:21,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:56:21,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:56:21,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:56:21,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:56:21,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:56:21,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:56:21,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:56:21,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2024-11-19 01:56:21,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:56:21,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:56:21,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:56:21,307 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:56:21,308 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:56:21,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-19 01:56:22,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:56:22,855 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:56:22,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-19 01:56:22,878 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/627cf5c58/3b5db58e119f4f1c8025d4247d3a279c/FLAG6810e8c8e [2024-11-19 01:56:23,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/627cf5c58/3b5db58e119f4f1c8025d4247d3a279c [2024-11-19 01:56:23,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:56:23,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:56:23,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:56:23,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:56:23,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:56:23,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aaf8fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23, skipping insertion in model container [2024-11-19 01:56:23,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:56:23,582 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] [2024-11-19 01:56:23,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:56:23,606 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:56:23,638 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] [2024-11-19 01:56:23,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:56:23,680 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:56:23,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23 WrapperNode [2024-11-19 01:56:23,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:56:23,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:56:23,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:56:23,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:56:23,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,759 INFO L138 Inliner]: procedures = 243, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 260 [2024-11-19 01:56:23,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:56:23,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:56:23,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:56:23,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:56:23,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,780 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,801 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]. [2024-11-19 01:56:23,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:56:23,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:56:23,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:56:23,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:56:23,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (1/1) ... [2024-11-19 01:56:23,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:56:23,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:56:23,884 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) [2024-11-19 01:56:23,888 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 [2024-11-19 01:56:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 01:56:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 01:56:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 01:56:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 01:56:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:56:23,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:56:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:56:23,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:56:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 01:56:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:56:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:56:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:56:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 01:56:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:56:23,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:56:23,927 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:56:24,044 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:56:24,046 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:56:24,310 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:56:24,311 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:56:25,100 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:56:25,100 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:56:25,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:56:25 BoogieIcfgContainer [2024-11-19 01:56:25,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:56:25,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:56:25,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:56:25,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:56:25,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:56:23" (1/3) ... [2024-11-19 01:56:25,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb179f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:56:25, skipping insertion in model container [2024-11-19 01:56:25,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:56:23" (2/3) ... [2024-11-19 01:56:25,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb179f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:56:25, skipping insertion in model container [2024-11-19 01:56:25,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:56:25" (3/3) ... [2024-11-19 01:56:25,108 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-11-19 01:56:25,121 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:56:25,121 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:56:25,121 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:56:25,166 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:56:25,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-19 01:56:25,244 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-19 01:56:25,245 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:56:25,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2024-11-19 01:56:25,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-19 01:56:25,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 76 flow [2024-11-19 01:56:25,260 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:56:25,267 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;@3f6cefa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:56:25,267 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:56:25,282 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:56:25,282 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-11-19 01:56:25,283 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:56:25,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:25,283 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:25,284 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:56:25,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1822672186, now seen corresponding path program 1 times [2024-11-19 01:56:25,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:25,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88896086] [2024-11-19 01:56:25,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:25,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:25,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88896086] [2024-11-19 01:56:25,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88896086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:25,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:25,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:56:25,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642983660] [2024-11-19 01:56:25,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:25,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:56:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:56:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:56:25,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-19 01:56:25,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:56:25,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:25,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-19 01:56:25,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:26,137 INFO L124 PetriNetUnfolderBase]: 429/782 cut-off events. [2024-11-19 01:56:26,138 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-19 01:56:26,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 782 events. 429/782 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3649 event pairs, 169 based on Foata normal form. 18/787 useless extension candidates. Maximal degree in co-relation 1424. Up to 399 conditions per place. [2024-11-19 01:56:26,143 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 38 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-11-19 01:56:26,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 193 flow [2024-11-19 01:56:26,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:56:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:56:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-19 01:56:26,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-11-19 01:56:26,153 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 3 states and 80 transitions. [2024-11-19 01:56:26,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 193 flow [2024-11-19 01:56:26,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 183 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:56:26,157 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 80 flow [2024-11-19 01:56:26,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-19 01:56:26,161 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-19 01:56:26,161 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 80 flow [2024-11-19 01:56:26,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:56:26,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:26,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:26,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:56:26,162 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:56:26,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:26,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1461822308, now seen corresponding path program 1 times [2024-11-19 01:56:26,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:26,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812222581] [2024-11-19 01:56:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:26,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:26,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812222581] [2024-11-19 01:56:26,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812222581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:26,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:26,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:56:26,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933531014] [2024-11-19 01:56:26,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:26,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:56:26,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:26,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:56:26,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:56:26,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-19 01:56:26,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-19 01:56:26,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:26,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-19 01:56:26,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:26,671 INFO L124 PetriNetUnfolderBase]: 732/1317 cut-off events. [2024-11-19 01:56:26,671 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-19 01:56:26,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 1317 events. 732/1317 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6663 event pairs, 295 based on Foata normal form. 29/1324 useless extension candidates. Maximal degree in co-relation 974. Up to 683 conditions per place. [2024-11-19 01:56:26,678 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 39 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-19 01:56:26,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 207 flow [2024-11-19 01:56:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:56:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:56:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-19 01:56:26,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-11-19 01:56:26,680 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 80 flow. Second operand 3 states and 79 transitions. [2024-11-19 01:56:26,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 207 flow [2024-11-19 01:56:26,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:26,681 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 90 flow [2024-11-19 01:56:26,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-11-19 01:56:26,682 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2024-11-19 01:56:26,682 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 90 flow [2024-11-19 01:56:26,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-19 01:56:26,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:26,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:26,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:56:26,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:56:26,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:26,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1305595972, now seen corresponding path program 1 times [2024-11-19 01:56:26,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:26,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758608703] [2024-11-19 01:56:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:56:26,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:56:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:26,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:26,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758608703] [2024-11-19 01:56:26,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758608703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:26,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:26,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:56:26,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608002951] [2024-11-19 01:56:26,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:26,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:56:26,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:56:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:56:26,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-19 01:56:26,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-19 01:56:26,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:26,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-19 01:56:26,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:27,072 INFO L124 PetriNetUnfolderBase]: 427/899 cut-off events. [2024-11-19 01:56:27,072 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-19 01:56:27,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 899 events. 427/899 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4315 event pairs, 182 based on Foata normal form. 64/962 useless extension candidates. Maximal degree in co-relation 632. Up to 372 conditions per place. [2024-11-19 01:56:27,076 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 29 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-11-19 01:56:27,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 208 flow [2024-11-19 01:56:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:56:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:56:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-19 01:56:27,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 01:56:27,077 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 90 flow. Second operand 3 states and 76 transitions. [2024-11-19 01:56:27,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 208 flow [2024-11-19 01:56:27,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:27,079 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 104 flow [2024-11-19 01:56:27,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-11-19 01:56:27,080 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-11-19 01:56:27,080 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 104 flow [2024-11-19 01:56:27,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-19 01:56:27,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:27,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:27,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:56:27,080 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:56:27,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:27,081 INFO L85 PathProgramCache]: Analyzing trace with hash 532059826, now seen corresponding path program 2 times [2024-11-19 01:56:27,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:27,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176558000] [2024-11-19 01:56:27,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:56:27,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:27,303 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:56:27,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:56:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:27,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:27,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176558000] [2024-11-19 01:56:27,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176558000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:56:27,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249405913] [2024-11-19 01:56:27,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:56:27,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:56:27,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:56:27,348 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) [2024-11-19 01:56:27,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:56:27,742 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:56:27,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:56:27,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:56:27,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:56:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:27,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:56:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:27,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249405913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:56:27,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:56:27,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-19 01:56:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867351317] [2024-11-19 01:56:27,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:56:27,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:56:27,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:56:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:56:27,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-19 01:56:27,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-11-19 01:56:27,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:27,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-19 01:56:27,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:28,030 INFO L124 PetriNetUnfolderBase]: 1025/1964 cut-off events. [2024-11-19 01:56:28,030 INFO L125 PetriNetUnfolderBase]: For 630/630 co-relation queries the response was YES. [2024-11-19 01:56:28,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4691 conditions, 1964 events. 1025/1964 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 9797 event pairs, 113 based on Foata normal form. 87/2041 useless extension candidates. Maximal degree in co-relation 1693. Up to 382 conditions per place. [2024-11-19 01:56:28,038 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 85 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2024-11-19 01:56:28,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 99 transitions, 512 flow [2024-11-19 01:56:28,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:56:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:56:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-11-19 01:56:28,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.706140350877193 [2024-11-19 01:56:28,042 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 104 flow. Second operand 6 states and 161 transitions. [2024-11-19 01:56:28,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 99 transitions, 512 flow [2024-11-19 01:56:28,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 99 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:28,045 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 136 flow [2024-11-19 01:56:28,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-19 01:56:28,047 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2024-11-19 01:56:28,048 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 136 flow [2024-11-19 01:56:28,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-11-19 01:56:28,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:28,048 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:56:28,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:56:28,251 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 [2024-11-19 01:56:28,252 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:56:28,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2117609882, now seen corresponding path program 3 times [2024-11-19 01:56:28,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:28,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384795452] [2024-11-19 01:56:28,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:56:28,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:28,456 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:56:28,457 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:56:28,501 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-19 01:56:28,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:28,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384795452] [2024-11-19 01:56:28,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384795452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:56:28,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286550083] [2024-11-19 01:56:28,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:56:28,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:56:28,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:56:28,504 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) [2024-11-19 01:56:28,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:56:28,858 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:56:28,858 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:56:28,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:56:28,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:56:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-19 01:56:28,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:56:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-19 01:56:28,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286550083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:56:28,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:56:28,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 01:56:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164963299] [2024-11-19 01:56:28,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:56:28,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:56:28,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:28,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:56:28,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:56:28,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-19 01:56:28,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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) [2024-11-19 01:56:28,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:28,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-19 01:56:28,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:29,268 INFO L124 PetriNetUnfolderBase]: 1877/3655 cut-off events. [2024-11-19 01:56:29,269 INFO L125 PetriNetUnfolderBase]: For 2288/2288 co-relation queries the response was YES. [2024-11-19 01:56:29,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8784 conditions, 3655 events. 1877/3655 cut-off events. For 2288/2288 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20927 event pairs, 206 based on Foata normal form. 168/3807 useless extension candidates. Maximal degree in co-relation 5889. Up to 718 conditions per place. [2024-11-19 01:56:29,285 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 99 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2024-11-19 01:56:29,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 114 transitions, 680 flow [2024-11-19 01:56:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:56:29,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:56:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-11-19 01:56:29,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2024-11-19 01:56:29,287 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 136 flow. Second operand 6 states and 165 transitions. [2024-11-19 01:56:29,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 114 transitions, 680 flow [2024-11-19 01:56:29,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 114 transitions, 640 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:29,291 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 168 flow [2024-11-19 01:56:29,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-11-19 01:56:29,292 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2024-11-19 01:56:29,292 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 168 flow [2024-11-19 01:56:29,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 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) [2024-11-19 01:56:29,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:29,292 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-19 01:56:29,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:56:29,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:56:29,494 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:56:29,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash -976086530, now seen corresponding path program 4 times [2024-11-19 01:56:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:29,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990482933] [2024-11-19 01:56:29,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:56:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:29,706 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:56:29,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:56:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-19 01:56:29,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:29,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990482933] [2024-11-19 01:56:29,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990482933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:56:29,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:56:29,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:56:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295330436] [2024-11-19 01:56:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:56:29,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:56:29,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:29,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:56:29,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:56:29,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-19 01:56:29,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-11-19 01:56:29,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:29,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-19 01:56:29,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:30,092 INFO L124 PetriNetUnfolderBase]: 1644/3356 cut-off events. [2024-11-19 01:56:30,093 INFO L125 PetriNetUnfolderBase]: For 3102/3102 co-relation queries the response was YES. [2024-11-19 01:56:30,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8748 conditions, 3356 events. 1644/3356 cut-off events. For 3102/3102 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 18688 event pairs, 461 based on Foata normal form. 0/3169 useless extension candidates. Maximal degree in co-relation 6717. Up to 1574 conditions per place. [2024-11-19 01:56:30,108 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 49 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-19 01:56:30,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 384 flow [2024-11-19 01:56:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:56:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:56:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-19 01:56:30,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2024-11-19 01:56:30,110 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 168 flow. Second operand 4 states and 87 transitions. [2024-11-19 01:56:30,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 384 flow [2024-11-19 01:56:30,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 369 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:30,115 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 185 flow [2024-11-19 01:56:30,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-11-19 01:56:30,115 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2024-11-19 01:56:30,116 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 185 flow [2024-11-19 01:56:30,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-11-19 01:56:30,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:30,116 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-19 01:56:30,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:56:30,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:56:30,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash 56223464, now seen corresponding path program 5 times [2024-11-19 01:56:30,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:30,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841398681] [2024-11-19 01:56:30,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:56:30,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:30,303 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-19 01:56:30,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:56:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 54 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 01:56:30,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:30,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841398681] [2024-11-19 01:56:30,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841398681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:56:30,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381815861] [2024-11-19 01:56:30,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:56:30,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:56:30,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:56:30,502 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) [2024-11-19 01:56:30,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:56:30,886 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-19 01:56:30,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:56:30,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:56:30,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:56:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 01:56:30,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:56:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 01:56:30,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381815861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:56:30,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:56:30,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-11-19 01:56:30,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12515149] [2024-11-19 01:56:30,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:56:30,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:56:30,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:56:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:56:30,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-19 01:56:30,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-11-19 01:56:30,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:30,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-19 01:56:30,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:31,152 INFO L124 PetriNetUnfolderBase]: 543/1203 cut-off events. [2024-11-19 01:56:31,152 INFO L125 PetriNetUnfolderBase]: For 1289/1291 co-relation queries the response was YES. [2024-11-19 01:56:31,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 1203 events. 543/1203 cut-off events. For 1289/1291 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4921 event pairs, 148 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 1845. Up to 527 conditions per place. [2024-11-19 01:56:31,158 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 48 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-19 01:56:31,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 376 flow [2024-11-19 01:56:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:56:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:56:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-19 01:56:31,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2024-11-19 01:56:31,159 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 185 flow. Second operand 4 states and 85 transitions. [2024-11-19 01:56:31,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 376 flow [2024-11-19 01:56:31,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:56:31,162 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 180 flow [2024-11-19 01:56:31,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2024-11-19 01:56:31,163 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 24 predicate places. [2024-11-19 01:56:31,163 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 180 flow [2024-11-19 01:56:31,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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) [2024-11-19 01:56:31,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:56:31,164 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-19 01:56:31,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:56:31,365 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 [2024-11-19 01:56:31,366 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:56:31,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:56:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1275824346, now seen corresponding path program 6 times [2024-11-19 01:56:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:56:31,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654950626] [2024-11-19 01:56:31,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:56:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:56:31,610 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 01:56:31,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:56:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:32,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:56:32,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654950626] [2024-11-19 01:56:32,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654950626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:56:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714209045] [2024-11-19 01:56:32,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:56:32,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:56:32,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:56:32,071 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) [2024-11-19 01:56:32,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:56:32,640 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 01:56:32,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:56:32,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 01:56:32,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:56:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:32,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:56:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:56:33,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714209045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:56:33,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:56:33,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 31 [2024-11-19 01:56:33,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755236113] [2024-11-19 01:56:33,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:56:33,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 01:56:33,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:56:33,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 01:56:33,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2024-11-19 01:56:33,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-19 01:56:33,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 180 flow. Second operand has 32 states, 32 states have (on average 14.09375) internal successors, (451), 32 states have internal predecessors, (451), 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) [2024-11-19 01:56:33,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:56:33,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-19 01:56:33,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:56:35,088 INFO L124 PetriNetUnfolderBase]: 589/1255 cut-off events. [2024-11-19 01:56:35,088 INFO L125 PetriNetUnfolderBase]: For 1411/1411 co-relation queries the response was YES. [2024-11-19 01:56:35,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 1255 events. 589/1255 cut-off events. For 1411/1411 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5115 event pairs, 37 based on Foata normal form. 30/1281 useless extension candidates. Maximal degree in co-relation 2157. Up to 232 conditions per place. [2024-11-19 01:56:35,092 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 0 selfloop transitions, 0 changer transitions 130/130 dead transitions. [2024-11-19 01:56:35,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 130 transitions, 816 flow [2024-11-19 01:56:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:56:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:56:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-11-19 01:56:35,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5241228070175439 [2024-11-19 01:56:35,095 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 180 flow. Second operand 12 states and 239 transitions. [2024-11-19 01:56:35,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 130 transitions, 816 flow [2024-11-19 01:56:35,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 130 transitions, 784 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:56:35,099 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2024-11-19 01:56:35,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2024-11-19 01:56:35,102 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-11-19 01:56:35,102 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2024-11-19 01:56:35,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 32 states have internal predecessors, (451), 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) [2024-11-19 01:56:35,105 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-19 01:56:35,105 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-19 01:56:35,107 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-19 01:56:35,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:56:35,311 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 [2024-11-19 01:56:35,312 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2024-11-19 01:56:35,315 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 01:56:35,315 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 01:56:35,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:56:35 BasicIcfg [2024-11-19 01:56:35,318 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 01:56:35,319 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 01:56:35,319 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 01:56:35,319 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 01:56:35,319 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:56:25" (3/4) ... [2024-11-19 01:56:35,321 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 01:56:35,323 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 01:56:35,323 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 01:56:35,335 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 253 nodes and edges [2024-11-19 01:56:35,335 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-19 01:56:35,336 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 01:56:35,336 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-19 01:56:35,336 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 01:56:35,413 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 01:56:35,413 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 01:56:35,413 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 01:56:35,415 INFO L158 Benchmark]: Toolchain (without parser) took 12216.74ms. Allocated memory was 169.9MB in the beginning and 807.4MB in the end (delta: 637.5MB). Free memory was 94.6MB in the beginning and 667.2MB in the end (delta: -572.6MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2024-11-19 01:56:35,415 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 169.9MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:56:35,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.85ms. Allocated memory is still 169.9MB. Free memory was 94.6MB in the beginning and 63.6MB in the end (delta: 31.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-19 01:56:35,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.44ms. Allocated memory is still 169.9MB. Free memory was 63.6MB in the beginning and 137.4MB in the end (delta: -73.9MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2024-11-19 01:56:35,416 INFO L158 Benchmark]: Boogie Preprocessor took 86.59ms. Allocated memory is still 169.9MB. Free memory was 137.4MB in the beginning and 133.4MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:56:35,416 INFO L158 Benchmark]: RCFGBuilder took 1248.08ms. Allocated memory was 169.9MB in the beginning and 237.0MB in the end (delta: 67.1MB). Free memory was 132.6MB in the beginning and 155.4MB in the end (delta: -22.8MB). Peak memory consumption was 142.9MB. Max. memory is 16.1GB. [2024-11-19 01:56:35,417 INFO L158 Benchmark]: TraceAbstraction took 10216.54ms. Allocated memory was 237.0MB in the beginning and 807.4MB in the end (delta: 570.4MB). Free memory was 154.3MB in the beginning and 674.6MB in the end (delta: -520.3MB). Peak memory consumption was 405.1MB. Max. memory is 16.1GB. [2024-11-19 01:56:35,417 INFO L158 Benchmark]: Witness Printer took 94.92ms. Allocated memory is still 807.4MB. Free memory was 674.6MB in the beginning and 667.2MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-19 01:56:35,418 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 169.9MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 479.85ms. Allocated memory is still 169.9MB. Free memory was 94.6MB in the beginning and 63.6MB in the end (delta: 31.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.44ms. Allocated memory is still 169.9MB. Free memory was 63.6MB in the beginning and 137.4MB in the end (delta: -73.9MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.59ms. Allocated memory is still 169.9MB. Free memory was 137.4MB in the beginning and 133.4MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1248.08ms. Allocated memory was 169.9MB in the beginning and 237.0MB in the end (delta: 67.1MB). Free memory was 132.6MB in the beginning and 155.4MB in the end (delta: -22.8MB). Peak memory consumption was 142.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10216.54ms. Allocated memory was 237.0MB in the beginning and 807.4MB in the end (delta: 570.4MB). Free memory was 154.3MB in the beginning and 674.6MB in the end (delta: -520.3MB). Peak memory consumption was 405.1MB. Max. memory is 16.1GB. * Witness Printer took 94.92ms. Allocated memory is still 807.4MB. Free memory was 674.6MB in the beginning and 667.2MB in the end (delta: 7.3MB). 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, 55 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: 10.1s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 422 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 412 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3400 IncrementalHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1 mSDtfsCounter, 3400 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 424 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=6, InterpolantAutomatonStates: 41, 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, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 510 NumberOfCodeBlocks, 474 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 688 ConstructedInterpolants, 0 QuantifiedInterpolants, 2449 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1868 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 410/692 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! [2024-11-19 01:56:35,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE