./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 14:37:43,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:37:44,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:37:44,056 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:37:44,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:37:44,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:37:44,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:37:44,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:37:44,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:37:44,097 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:37:44,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:37:44,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:37:44,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:37:44,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:37:44,099 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:37:44,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:37:44,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:37:44,101 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:37:44,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:37:44,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:37:44,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:37:44,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:37:44,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:37:44,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:37:44,105 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:37:44,106 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:37:44,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:37:44,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:37:44,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:37:44,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:37:44,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:37:44,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:37:44,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:37:44,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:37:44,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:37:44,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:37:44,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:37:44,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:37:44,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:37:44,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:37:44,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:37:44,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:37:44,121 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2024-10-11 14:37:44,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:37:44,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:37:44,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:37:44,378 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:37:44,378 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:37:44,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-10-11 14:37:45,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:37:45,992 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:37:45,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-10-11 14:37:46,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d627e90ed/4141eb170ff24dfdb9dcb94deee7f355/FLAG89b868ac2 [2024-10-11 14:37:46,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d627e90ed/4141eb170ff24dfdb9dcb94deee7f355 [2024-10-11 14:37:46,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:37:46,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:37:46,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:37:46,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:37:46,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:37:46,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c30e308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46, skipping insertion in model container [2024-10-11 14:37:46,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,376 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:37:46,712 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-10-11 14:37:46,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:37:46,731 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:37:46,799 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-10-11 14:37:46,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:37:46,854 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:37:46,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46 WrapperNode [2024-10-11 14:37:46,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:37:46,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:37:46,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:37:46,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:37:46,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,916 INFO L138 Inliner]: procedures = 243, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2024-10-11 14:37:46,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:37:46,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:37:46,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:37:46,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:37:46,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,937 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,965 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]. [2024-10-11 14:37:46,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:46,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:37:46,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:37:46,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:37:46,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:37:46,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (1/1) ... [2024-10-11 14:37:47,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:37:47,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:47,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:37:47,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:37:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-11 14:37:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-11 14:37:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-11 14:37:47,084 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 14:37:47,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:37:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:37:47,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:37:47,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:37:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 14:37:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:37:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:37:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:37:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 14:37:47,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:37:47,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:37:47,089 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:37:47,274 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:37:47,276 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:37:47,492 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:37:47,492 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:37:47,688 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:37:47,688 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 14:37:47,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:37:47 BoogieIcfgContainer [2024-10-11 14:37:47,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:37:47,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:37:47,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:37:47,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:37:47,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:37:46" (1/3) ... [2024-10-11 14:37:47,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f650a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:37:47, skipping insertion in model container [2024-10-11 14:37:47,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:37:46" (2/3) ... [2024-10-11 14:37:47,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f650a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:37:47, skipping insertion in model container [2024-10-11 14:37:47,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:37:47" (3/3) ... [2024-10-11 14:37:47,697 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-10-11 14:37:47,710 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:37:47,710 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:37:47,711 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:37:47,752 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 14:37:47,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-10-11 14:37:47,843 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-10-11 14:37:47,845 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:37:47,849 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. [2024-10-11 14:37:47,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-10-11 14:37:47,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 76 flow [2024-10-11 14:37:47,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:37:47,878 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;@6fd356f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:37:47,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-11 14:37:47,894 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:37:47,894 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-10-11 14:37:47,894 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:37:47,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:47,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:47,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:47,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash -875147706, now seen corresponding path program 1 times [2024-10-11 14:37:47,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:47,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430663908] [2024-10-11 14:37:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:47,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:48,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:48,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430663908] [2024-10-11 14:37:48,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430663908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:48,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:37:48,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:37:48,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222620158] [2024-10-11 14:37:48,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:48,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:37:48,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:48,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:37:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:37:48,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-11 14:37:48,329 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) [2024-10-11 14:37:48,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:48,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-11 14:37:48,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:48,536 INFO L124 PetriNetUnfolderBase]: 429/782 cut-off events. [2024-10-11 14:37:48,537 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-11 14:37:48,540 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. [2024-10-11 14:37:48,547 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 38 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-10-11 14:37:48,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 193 flow [2024-10-11 14:37:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:37:48,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:37:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-11 14:37:48,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-10-11 14:37:48,562 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 3 states and 80 transitions. [2024-10-11 14:37:48,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 193 flow [2024-10-11 14:37:48,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 183 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:37:48,568 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 80 flow [2024-10-11 14:37:48,569 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} [2024-10-11 14:37:48,573 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-10-11 14:37:48,573 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 80 flow [2024-10-11 14:37:48,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:48,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:48,574 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] [2024-10-11 14:37:48,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:37:48,575 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:48,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash 156033436, now seen corresponding path program 1 times [2024-10-11 14:37:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:48,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27069296] [2024-10-11 14:37:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:48,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:48,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:48,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27069296] [2024-10-11 14:37:48,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27069296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:48,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:37:48,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:37:48,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492591043] [2024-10-11 14:37:48,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:48,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:37:48,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:48,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:37:48,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:37:48,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-11 14:37:48,709 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) [2024-10-11 14:37:48,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:48,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-11 14:37:48,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:48,961 INFO L124 PetriNetUnfolderBase]: 732/1317 cut-off events. [2024-10-11 14:37:48,962 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-10-11 14:37:48,966 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. [2024-10-11 14:37:48,974 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 39 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-10-11 14:37:48,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 207 flow [2024-10-11 14:37:48,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:37:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:37:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-10-11 14:37:48,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-10-11 14:37:48,977 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 80 flow. Second operand 3 states and 79 transitions. [2024-10-11 14:37:48,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 207 flow [2024-10-11 14:37:48,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:37:48,979 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 90 flow [2024-10-11 14:37:48,982 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} [2024-10-11 14:37:48,983 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2024-10-11 14:37:48,983 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 90 flow [2024-10-11 14:37:48,983 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) [2024-10-11 14:37:48,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:48,984 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] [2024-10-11 14:37:48,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:37:48,984 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:48,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:48,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2032794052, now seen corresponding path program 1 times [2024-10-11 14:37:48,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:48,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975141392] [2024-10-11 14:37:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:49,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:49,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975141392] [2024-10-11 14:37:49,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975141392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:49,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:37:49,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:37:49,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134845163] [2024-10-11 14:37:49,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:49,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:37:49,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:49,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:37:49,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:37:49,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-10-11 14:37:49,191 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) [2024-10-11 14:37:49,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:49,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-10-11 14:37:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:49,322 INFO L124 PetriNetUnfolderBase]: 427/899 cut-off events. [2024-10-11 14:37:49,322 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-10-11 14:37:49,324 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. [2024-10-11 14:37:49,330 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 29 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-10-11 14:37:49,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 208 flow [2024-10-11 14:37:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:37:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:37:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-10-11 14:37:49,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-11 14:37:49,332 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 90 flow. Second operand 3 states and 76 transitions. [2024-10-11 14:37:49,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 208 flow [2024-10-11 14:37:49,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:37:49,335 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 104 flow [2024-10-11 14:37:49,335 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} [2024-10-11 14:37:49,338 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-10-11 14:37:49,338 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 104 flow [2024-10-11 14:37:49,338 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) [2024-10-11 14:37:49,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:49,338 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] [2024-10-11 14:37:49,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:37:49,339 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:49,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash -195138254, now seen corresponding path program 2 times [2024-10-11 14:37:49,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:49,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080336931] [2024-10-11 14:37:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:49,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:49,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080336931] [2024-10-11 14:37:49,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080336931] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:49,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486336143] [2024-10-11 14:37:49,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:37:49,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:49,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:49,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:49,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:37:49,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:37:49,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:49,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 14:37:49,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:49,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:37:49,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486336143] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:49,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:49,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-11 14:37:49,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133829418] [2024-10-11 14:37:49,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:49,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:37:49,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:37:49,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:37:49,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-11 14:37:49,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 104 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:49,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:49,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-11 14:37:49,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:50,294 INFO L124 PetriNetUnfolderBase]: 1416/2753 cut-off events. [2024-10-11 14:37:50,294 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2024-10-11 14:37:50,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6520 conditions, 2753 events. 1416/2753 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 14819 event pairs, 77 based on Foata normal form. 181/2926 useless extension candidates. Maximal degree in co-relation 1693. Up to 476 conditions per place. [2024-10-11 14:37:50,312 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 189 selfloop transitions, 33 changer transitions 0/230 dead transitions. [2024-10-11 14:37:50,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 230 transitions, 1216 flow [2024-10-11 14:37:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:37:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:37:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 428 transitions. [2024-10-11 14:37:50,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7039473684210527 [2024-10-11 14:37:50,316 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 104 flow. Second operand 16 states and 428 transitions. [2024-10-11 14:37:50,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 230 transitions, 1216 flow [2024-10-11 14:37:50,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 230 transitions, 1108 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:37:50,342 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 370 flow [2024-10-11 14:37:50,342 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=370, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-10-11 14:37:50,343 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-10-11 14:37:50,343 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 370 flow [2024-10-11 14:37:50,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:50,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:50,344 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:50,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:37:50,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:50,549 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:50,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:50,550 INFO L85 PathProgramCache]: Analyzing trace with hash 67153738, now seen corresponding path program 3 times [2024-10-11 14:37:50,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:50,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941881487] [2024-10-11 14:37:50,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:50,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 14:37:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941881487] [2024-10-11 14:37:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941881487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834448908] [2024-10-11 14:37:50,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:37:50,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:50,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:50,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:50,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:37:50,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:37:50,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:50,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 14:37:50,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 14:37:50,810 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:37:50,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834448908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:50,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:37:50,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-10-11 14:37:50,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052663277] [2024-10-11 14:37:50,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:50,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:37:50,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:50,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:37:50,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:37:50,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-11 14:37:50,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:50,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:50,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-11 14:37:50,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:51,145 INFO L124 PetriNetUnfolderBase]: 1490/3021 cut-off events. [2024-10-11 14:37:51,146 INFO L125 PetriNetUnfolderBase]: For 7767/7767 co-relation queries the response was YES. [2024-10-11 14:37:51,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9228 conditions, 3021 events. 1490/3021 cut-off events. For 7767/7767 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 17200 event pairs, 377 based on Foata normal form. 0/2853 useless extension candidates. Maximal degree in co-relation 7220. Up to 1378 conditions per place. [2024-10-11 14:37:51,168 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 84 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2024-10-11 14:37:51,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 98 transitions, 797 flow [2024-10-11 14:37:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:37:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:37:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-10-11 14:37:51,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2024-10-11 14:37:51,170 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 370 flow. Second operand 4 states and 87 transitions. [2024-10-11 14:37:51,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 98 transitions, 797 flow [2024-10-11 14:37:51,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 718 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-10-11 14:37:51,196 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 351 flow [2024-10-11 14:37:51,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-10-11 14:37:51,197 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2024-10-11 14:37:51,198 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 351 flow [2024-10-11 14:37:51,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:51,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:51,198 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:51,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:37:51,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:51,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:51,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash 545672068, now seen corresponding path program 4 times [2024-10-11 14:37:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:51,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439854706] [2024-10-11 14:37:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:51,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-11 14:37:51,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:51,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439854706] [2024-10-11 14:37:51,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439854706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:37:51,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:37:51,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:37:51,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139788991] [2024-10-11 14:37:51,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:37:51,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:37:51,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:37:51,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:37:51,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-11 14:37:51,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 351 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) [2024-10-11 14:37:51,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:51,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-11 14:37:51,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:51,742 INFO L124 PetriNetUnfolderBase]: 1022/2119 cut-off events. [2024-10-11 14:37:51,743 INFO L125 PetriNetUnfolderBase]: For 6125/6125 co-relation queries the response was YES. [2024-10-11 14:37:51,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6990 conditions, 2119 events. 1022/2119 cut-off events. For 6125/6125 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11358 event pairs, 265 based on Foata normal form. 0/2029 useless extension candidates. Maximal degree in co-relation 5811. Up to 1449 conditions per place. [2024-10-11 14:37:51,757 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 64 selfloop transitions, 3 changer transitions 2/79 dead transitions. [2024-10-11 14:37:51,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 567 flow [2024-10-11 14:37:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:37:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:37:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-11 14:37:51,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-10-11 14:37:51,759 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 351 flow. Second operand 3 states and 73 transitions. [2024-10-11 14:37:51,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 567 flow [2024-10-11 14:37:51,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:37:51,771 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 359 flow [2024-10-11 14:37:51,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-10-11 14:37:51,773 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 35 predicate places. [2024-10-11 14:37:51,774 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 359 flow [2024-10-11 14:37:51,774 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) [2024-10-11 14:37:51,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:51,775 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:37:51,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:37:51,775 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:51,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:51,776 INFO L85 PathProgramCache]: Analyzing trace with hash -924106786, now seen corresponding path program 5 times [2024-10-11 14:37:51,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:51,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548284779] [2024-10-11 14:37:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:51,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 14:37:51,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:51,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548284779] [2024-10-11 14:37:51,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548284779] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:51,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880705385] [2024-10-11 14:37:51,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:37:51,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:51,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:51,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:51,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:37:52,033 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-11 14:37:52,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:52,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:37:52,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 14:37:52,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 14:37:52,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880705385] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:52,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:52,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-10-11 14:37:52,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827101241] [2024-10-11 14:37:52,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:52,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:37:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:37:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:37:52,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-11 14:37:52,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:52,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:52,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-11 14:37:52,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:52,571 INFO L124 PetriNetUnfolderBase]: 1339/2783 cut-off events. [2024-10-11 14:37:52,571 INFO L125 PetriNetUnfolderBase]: For 9011/9023 co-relation queries the response was YES. [2024-10-11 14:37:52,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8887 conditions, 2783 events. 1339/2783 cut-off events. For 9011/9023 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14967 event pairs, 174 based on Foata normal form. 128/2897 useless extension candidates. Maximal degree in co-relation 6907. Up to 714 conditions per place. [2024-10-11 14:37:52,593 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 95 selfloop transitions, 15 changer transitions 1/124 dead transitions. [2024-10-11 14:37:52,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 124 transitions, 911 flow [2024-10-11 14:37:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:37:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:37:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-10-11 14:37:52,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-10-11 14:37:52,595 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 359 flow. Second operand 6 states and 156 transitions. [2024-10-11 14:37:52,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 124 transitions, 911 flow [2024-10-11 14:37:52,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 124 transitions, 897 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 14:37:52,611 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 416 flow [2024-10-11 14:37:52,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=416, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-10-11 14:37:52,614 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2024-10-11 14:37:52,614 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 416 flow [2024-10-11 14:37:52,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:52,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:37:52,617 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] [2024-10-11 14:37:52,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:37:52,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:52,818 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:37:52,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:37:52,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1644555078, now seen corresponding path program 6 times [2024-10-11 14:37:52,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:37:52,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846305945] [2024-10-11 14:37:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:37:52,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:37:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:37:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:37:53,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:37:53,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846305945] [2024-10-11 14:37:53,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846305945] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:37:53,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823700883] [2024-10-11 14:37:53,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:37:53,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:37:53,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:37:53,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:37:53,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:37:53,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-11 14:37:53,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:37:53,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 14:37:53,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:37:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:37:53,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:37:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:37:54,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823700883] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:37:54,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:37:54,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2024-10-11 14:37:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133303678] [2024-10-11 14:37:54,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:37:54,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-11 14:37:54,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:37:54,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-11 14:37:54,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-10-11 14:37:54,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-10-11 14:37:54,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 416 flow. Second operand has 31 states, 31 states have (on average 14.03225806451613) internal successors, (435), 31 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:54,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:37:54,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-10-11 14:37:54,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:37:55,642 INFO L124 PetriNetUnfolderBase]: 1253/2583 cut-off events. [2024-10-11 14:37:55,642 INFO L125 PetriNetUnfolderBase]: For 8917/8933 co-relation queries the response was YES. [2024-10-11 14:37:55,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8874 conditions, 2583 events. 1253/2583 cut-off events. For 8917/8933 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14074 event pairs, 81 based on Foata normal form. 74/2653 useless extension candidates. Maximal degree in co-relation 7406. Up to 541 conditions per place. [2024-10-11 14:37:55,653 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 0 selfloop transitions, 0 changer transitions 164/164 dead transitions. [2024-10-11 14:37:55,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 164 transitions, 1361 flow [2024-10-11 14:37:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:37:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:37:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-10-11 14:37:55,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5241228070175439 [2024-10-11 14:37:55,655 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 416 flow. Second operand 12 states and 239 transitions. [2024-10-11 14:37:55,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 164 transitions, 1361 flow [2024-10-11 14:37:55,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 164 transitions, 1282 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-10-11 14:37:55,673 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2024-10-11 14:37:55,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2024-10-11 14:37:55,673 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 48 predicate places. [2024-10-11 14:37:55,673 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2024-10-11 14:37:55,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 14.03225806451613) internal successors, (435), 31 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:37:55,678 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-11 14:37:55,679 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-11 14:37:55,679 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-11 14:37:55,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 14:37:55,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 14:37:55,880 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2024-10-11 14:37:55,882 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:37:55,883 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:37:55,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:37:55 BasicIcfg [2024-10-11 14:37:55,888 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:37:55,889 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:37:55,889 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:37:55,889 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:37:55,889 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:37:47" (3/4) ... [2024-10-11 14:37:55,891 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:37:55,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-11 14:37:55,895 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-11 14:37:55,902 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 64 nodes and edges [2024-10-11 14:37:55,903 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-11 14:37:55,903 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 14:37:55,903 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 14:37:55,903 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 14:37:55,999 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:37:56,000 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:37:56,000 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:37:56,001 INFO L158 Benchmark]: Toolchain (without parser) took 9670.23ms. Allocated memory was 184.5MB in the beginning and 299.9MB in the end (delta: 115.3MB). Free memory was 137.7MB in the beginning and 123.3MB in the end (delta: 14.5MB). Peak memory consumption was 132.4MB. Max. memory is 16.1GB. [2024-10-11 14:37:56,001 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 184.5MB. Free memory is still 153.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:37:56,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.01ms. Allocated memory is still 184.5MB. Free memory was 137.2MB in the beginning and 108.4MB in the end (delta: 28.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-11 14:37:56,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.52ms. Allocated memory is still 184.5MB. Free memory was 108.4MB in the beginning and 105.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:37:56,001 INFO L158 Benchmark]: Boogie Preprocessor took 75.90ms. Allocated memory is still 184.5MB. Free memory was 105.7MB in the beginning and 103.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:37:56,002 INFO L158 Benchmark]: RCFGBuilder took 693.36ms. Allocated memory is still 184.5MB. Free memory was 102.9MB in the beginning and 65.9MB in the end (delta: 37.0MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-10-11 14:37:56,002 INFO L158 Benchmark]: TraceAbstraction took 8196.99ms. Allocated memory was 184.5MB in the beginning and 299.9MB in the end (delta: 115.3MB). Free memory was 65.1MB in the beginning and 127.9MB in the end (delta: -62.8MB). Peak memory consumption was 94.7MB. Max. memory is 16.1GB. [2024-10-11 14:37:56,002 INFO L158 Benchmark]: Witness Printer took 111.51ms. Allocated memory is still 299.9MB. Free memory was 127.9MB in the beginning and 123.3MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:37:56,007 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 184.5MB. Free memory is still 153.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 523.01ms. Allocated memory is still 184.5MB. Free memory was 137.2MB in the beginning and 108.4MB in the end (delta: 28.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.52ms. Allocated memory is still 184.5MB. Free memory was 108.4MB in the beginning and 105.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.90ms. Allocated memory is still 184.5MB. Free memory was 105.7MB in the beginning and 103.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 693.36ms. Allocated memory is still 184.5MB. Free memory was 102.9MB in the beginning and 65.9MB in the end (delta: 37.0MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8196.99ms. Allocated memory was 184.5MB in the beginning and 299.9MB in the end (delta: 115.3MB). Free memory was 65.1MB in the beginning and 127.9MB in the end (delta: -62.8MB). Peak memory consumption was 94.7MB. Max. memory is 16.1GB. * Witness Printer took 111.51ms. Allocated memory is still 299.9MB. Free memory was 127.9MB in the beginning and 123.3MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. 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: 8.1s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 490 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 477 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2737 IncrementalHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 3 mSDtfsCounter, 2737 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 370 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred in iteration=7, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 486 NumberOfCodeBlocks, 474 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 609 ConstructedInterpolants, 0 QuantifiedInterpolants, 2428 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1102 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 265/537 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 14:37:56,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE