./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/condvar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/condvar.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:14:52,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:14:52,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:14:53,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:14:53,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:14:53,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:14:53,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:14:53,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:14:53,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:14:53,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:14:53,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:14:53,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:14:53,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:14:53,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:14:53,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:14:53,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:14:53,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:14:53,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:14:53,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:14:53,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:14:53,062 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:14:53,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:14:53,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:14:53,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:14:53,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:14:53,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:14:53,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:14:53,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:14:53,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:14:53,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:14:53,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:14:53,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:14:53,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:14:53,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:14:53,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:14:53,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:14:53,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:14:53,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:14:53,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:14:53,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:14:53,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:14:53,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:14:53,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:14:53,109 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:14:53,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:14:53,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:14:53,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:14:53,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:14:53,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:14:53,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:14:53,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:14:53,113 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:14:53,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:14:53,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:14:53,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:14:53,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:14:53,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:14:53,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:14:53,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:14:53,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:14:53,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:14:53,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:14:53,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:14:53,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:14:53,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:14:53,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:14:53,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:14:53,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:53,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:14:53,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:14:53,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:14:53,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:14:53,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:14:53,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:14:53,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:14:53,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:14:53,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08550a9d023a2de1ac334a3445fa7327c26092d061f764efe50453540d837a7a [2022-07-19 21:14:53,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:14:53,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:14:53,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:14:53,372 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:14:53,373 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:14:53,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar.i [2022-07-19 21:14:53,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751ad8cdb/5e1f2d2b5bf7408ba7cf618c57d9a2fb/FLAG994c481db [2022-07-19 21:14:53,861 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:14:53,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar.i [2022-07-19 21:14:53,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751ad8cdb/5e1f2d2b5bf7408ba7cf618c57d9a2fb/FLAG994c481db [2022-07-19 21:14:53,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751ad8cdb/5e1f2d2b5bf7408ba7cf618c57d9a2fb [2022-07-19 21:14:53,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:14:53,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:14:53,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:53,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:14:53,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:14:53,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:53" (1/1) ... [2022-07-19 21:14:53,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70fe4569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:53, skipping insertion in model container [2022-07-19 21:14:53,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:53" (1/1) ... [2022-07-19 21:14:53,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:14:53,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:14:54,064 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:54,226 WARN L230 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-divine/condvar.i[30458,30471] [2022-07-19 21:14:54,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:54,244 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:14:54,259 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:54,286 WARN L230 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-divine/condvar.i[30458,30471] [2022-07-19 21:14:54,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:54,339 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:14:54,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54 WrapperNode [2022-07-19 21:14:54,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:54,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:54,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:14:54,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:14:54,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,400 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-07-19 21:14:54,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:54,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:14:54,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:14:54,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:14:54,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:14:54,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:14:54,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:14:54,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:14:54,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:54,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:54,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:14:54,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:14:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:14:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:14:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:14:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:14:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:14:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:14:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:14:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-07-19 21:14:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-07-19 21:14:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:14:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:14:54,515 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:14:54,641 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:14:54,642 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:14:54,772 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:14:54,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:14:54,778 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 21:14:54,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:54 BoogieIcfgContainer [2022-07-19 21:14:54,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:14:54,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:14:54,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:14:54,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:14:54,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:14:53" (1/3) ... [2022-07-19 21:14:54,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2ce55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:54, skipping insertion in model container [2022-07-19 21:14:54,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (2/3) ... [2022-07-19 21:14:54,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2ce55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:54, skipping insertion in model container [2022-07-19 21:14:54,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:54" (3/3) ... [2022-07-19 21:14:54,796 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2022-07-19 21:14:54,804 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:14:54,812 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:14:54,812 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:14:54,812 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:14:54,868 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-19 21:14:54,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 78 transitions, 164 flow [2022-07-19 21:14:54,935 INFO L129 PetriNetUnfolder]: 5/77 cut-off events. [2022-07-19 21:14:54,936 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:14:54,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 5/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2022-07-19 21:14:54,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 78 transitions, 164 flow [2022-07-19 21:14:54,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 70 transitions, 143 flow [2022-07-19 21:14:54,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:14:54,958 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@44725f69, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@655aca42 [2022-07-19 21:14:54,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:14:54,979 INFO L129 PetriNetUnfolder]: 4/65 cut-off events. [2022-07-19 21:14:54,980 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:14:54,981 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:54,981 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:14:54,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:14:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash 533595711, now seen corresponding path program 1 times [2022-07-19 21:14:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:54,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558614186] [2022-07-19 21:14:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:54,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:55,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:55,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558614186] [2022-07-19 21:14:55,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558614186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:14:55,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:14:55,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:14:55,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347906548] [2022-07-19 21:14:55,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:14:55,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:14:55,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:14:55,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:14:55,326 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 78 [2022-07-19 21:14:55,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2022-07-19 21:14:55,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:55,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 78 [2022-07-19 21:14:55,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:55,376 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2022-07-19 21:14:55,379 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:14:55,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 70 events. 3/70 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 3/69 useless extension candidates. Maximal degree in co-relation 33. Up to 5 conditions per place. [2022-07-19 21:14:55,381 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 4 selfloop transitions, 2 changer transitions 4/68 dead transitions. [2022-07-19 21:14:55,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 151 flow [2022-07-19 21:14:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:14:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:14:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2022-07-19 21:14:55,392 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9316239316239316 [2022-07-19 21:14:55,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2022-07-19 21:14:55,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2022-07-19 21:14:55,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:55,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2022-07-19 21:14:55,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2022-07-19 21:14:55,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2022-07-19 21:14:55,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2022-07-19 21:14:55,402 INFO L186 Difference]: Start difference. First operand has 69 places, 70 transitions, 143 flow. Second operand 3 states and 218 transitions. [2022-07-19 21:14:55,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 151 flow [2022-07-19 21:14:55,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:14:55,408 INFO L242 Difference]: Finished difference. Result has 71 places, 63 transitions, 136 flow [2022-07-19 21:14:55,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2022-07-19 21:14:55,412 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2022-07-19 21:14:55,412 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 136 flow [2022-07-19 21:14:55,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2022-07-19 21:14:55,413 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:55,413 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:14:55,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:14:55,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:14:55,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:55,414 INFO L85 PathProgramCache]: Analyzing trace with hash 986944085, now seen corresponding path program 1 times [2022-07-19 21:14:55,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:55,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430906327] [2022-07-19 21:14:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:55,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:55,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:55,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430906327] [2022-07-19 21:14:55,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430906327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:14:55,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:14:55,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:14:55,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889001288] [2022-07-19 21:14:55,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:14:55,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:14:55,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:14:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:14:55,517 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 78 [2022-07-19 21:14:55,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2022-07-19 21:14:55,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:55,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 78 [2022-07-19 21:14:55,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:55,566 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2022-07-19 21:14:55,567 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:14:55,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 67 events. 2/67 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 43. Up to 9 conditions per place. [2022-07-19 21:14:55,568 INFO L132 encePairwiseOnDemand]: 75/78 looper letters, 10 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2022-07-19 21:14:55,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 168 flow [2022-07-19 21:14:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:14:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:14:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2022-07-19 21:14:55,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9017094017094017 [2022-07-19 21:14:55,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2022-07-19 21:14:55,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2022-07-19 21:14:55,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:55,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2022-07-19 21:14:55,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2022-07-19 21:14:55,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2022-07-19 21:14:55,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2022-07-19 21:14:55,581 INFO L186 Difference]: Start difference. First operand has 71 places, 63 transitions, 136 flow. Second operand 3 states and 211 transitions. [2022-07-19 21:14:55,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 168 flow [2022-07-19 21:14:55,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:14:55,584 INFO L242 Difference]: Finished difference. Result has 68 places, 64 transitions, 144 flow [2022-07-19 21:14:55,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2022-07-19 21:14:55,588 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2022-07-19 21:14:55,588 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 144 flow [2022-07-19 21:14:55,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2022-07-19 21:14:55,588 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:55,589 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:14:55,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:14:55,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:14:55,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1983761035, now seen corresponding path program 1 times [2022-07-19 21:14:55,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:55,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087904822] [2022-07-19 21:14:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:55,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:55,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:55,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087904822] [2022-07-19 21:14:55,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087904822] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:14:55,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998774325] [2022-07-19 21:14:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:55,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:14:55,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:55,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:14:55,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:14:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:55,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 21:14:55,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:14:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:55,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:14:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:55,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998774325] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:14:55,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:14:55,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-19 21:14:55,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87526894] [2022-07-19 21:14:55,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:14:55,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:14:55,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:14:55,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:14:55,900 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2022-07-19 21:14:55,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 144 flow. Second operand has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 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) [2022-07-19 21:14:55,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:55,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2022-07-19 21:14:55,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:55,994 INFO L129 PetriNetUnfolder]: 2/74 cut-off events. [2022-07-19 21:14:55,997 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:14:55,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 74 events. 2/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 58. Up to 6 conditions per place. [2022-07-19 21:14:56,000 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 11 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2022-07-19 21:14:56,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 206 flow [2022-07-19 21:14:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:14:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:14:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 607 transitions. [2022-07-19 21:14:56,009 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8646723646723646 [2022-07-19 21:14:56,009 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 607 transitions. [2022-07-19 21:14:56,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 607 transitions. [2022-07-19 21:14:56,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:56,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 607 transitions. [2022-07-19 21:14:56,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.44444444444444) internal successors, (607), 9 states have internal predecessors, (607), 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) [2022-07-19 21:14:56,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2022-07-19 21:14:56,019 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2022-07-19 21:14:56,019 INFO L186 Difference]: Start difference. First operand has 68 places, 64 transitions, 144 flow. Second operand 9 states and 607 transitions. [2022-07-19 21:14:56,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 206 flow [2022-07-19 21:14:56,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:14:56,023 INFO L242 Difference]: Finished difference. Result has 78 places, 70 transitions, 192 flow [2022-07-19 21:14:56,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2022-07-19 21:14:56,025 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2022-07-19 21:14:56,026 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 192 flow [2022-07-19 21:14:56,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.1) internal successors, (671), 10 states have internal predecessors, (671), 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) [2022-07-19 21:14:56,027 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:56,027 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:14:56,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:14:56,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:14:56,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:14:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1097801271, now seen corresponding path program 2 times [2022-07-19 21:14:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:56,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122608208] [2022-07-19 21:14:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:56,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:56,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122608208] [2022-07-19 21:14:56,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122608208] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:14:56,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107637475] [2022-07-19 21:14:56,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:14:56,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:14:56,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:56,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:14:56,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:14:56,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:14:56,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:14:56,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:14:56,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:14:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:56,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:14:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:56,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107637475] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:14:56,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:14:56,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-07-19 21:14:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229919664] [2022-07-19 21:14:56,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:14:56,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:14:56,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:14:56,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:14:56,649 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 78 [2022-07-19 21:14:56,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 192 flow. Second operand has 18 states, 18 states have (on average 67.27777777777777) internal successors, (1211), 18 states have internal predecessors, (1211), 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) [2022-07-19 21:14:56,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:56,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 78 [2022-07-19 21:14:56,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:56,853 INFO L129 PetriNetUnfolder]: 2/94 cut-off events. [2022-07-19 21:14:56,854 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-07-19 21:14:56,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 94 events. 2/94 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 4/98 useless extension candidates. Maximal degree in co-relation 145. Up to 11 conditions per place. [2022-07-19 21:14:56,857 INFO L132 encePairwiseOnDemand]: 72/78 looper letters, 19 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2022-07-19 21:14:56,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 380 flow [2022-07-19 21:14:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:14:56,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:14:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1409 transitions. [2022-07-19 21:14:56,869 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8601953601953602 [2022-07-19 21:14:56,869 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1409 transitions. [2022-07-19 21:14:56,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1409 transitions. [2022-07-19 21:14:56,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:56,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1409 transitions. [2022-07-19 21:14:56,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 67.0952380952381) internal successors, (1409), 21 states have internal predecessors, (1409), 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) [2022-07-19 21:14:56,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 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) [2022-07-19 21:14:56,878 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 78.0) internal successors, (1716), 22 states have internal predecessors, (1716), 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) [2022-07-19 21:14:56,878 INFO L186 Difference]: Start difference. First operand has 78 places, 70 transitions, 192 flow. Second operand 21 states and 1409 transitions. [2022-07-19 21:14:56,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 380 flow [2022-07-19 21:14:56,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 366 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-07-19 21:14:56,882 INFO L242 Difference]: Finished difference. Result has 102 places, 83 transitions, 316 flow [2022-07-19 21:14:56,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=316, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2022-07-19 21:14:56,883 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2022-07-19 21:14:56,883 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 316 flow [2022-07-19 21:14:56,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.27777777777777) internal successors, (1211), 18 states have internal predecessors, (1211), 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) [2022-07-19 21:14:56,884 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:56,884 INFO L200 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:14:56,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:14:57,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-19 21:14:57,106 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:14:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash -468461195, now seen corresponding path program 3 times [2022-07-19 21:14:57,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:57,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682417975] [2022-07-19 21:14:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:14:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:14:57,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:14:57,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682417975] [2022-07-19 21:14:57,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682417975] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:14:57,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544940794] [2022-07-19 21:14:57,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 21:14:57,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:14:57,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:57,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:14:57,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:14:57,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 21:14:57,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:14:57,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 21:14:57,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:14:57,517 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-19 21:14:57,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:14:57,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544940794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:14:57,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:14:57,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-07-19 21:14:57,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065895806] [2022-07-19 21:14:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:14:57,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:14:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:14:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:14:57,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:14:57,525 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 78 [2022-07-19 21:14:57,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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) [2022-07-19 21:14:57,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:14:57,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 78 [2022-07-19 21:14:57,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:14:57,625 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2022-07-19 21:14:57,625 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-19 21:14:57,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 92 events. 2/92 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 175. Up to 11 conditions per place. [2022-07-19 21:14:57,626 INFO L132 encePairwiseOnDemand]: 70/78 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2022-07-19 21:14:57,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 83 transitions, 382 flow [2022-07-19 21:14:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:14:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:14:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 571 transitions. [2022-07-19 21:14:57,629 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8133903133903134 [2022-07-19 21:14:57,629 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 571 transitions. [2022-07-19 21:14:57,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 571 transitions. [2022-07-19 21:14:57,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:14:57,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 571 transitions. [2022-07-19 21:14:57,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.44444444444444) internal successors, (571), 9 states have internal predecessors, (571), 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) [2022-07-19 21:14:57,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2022-07-19 21:14:57,632 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 78.0) internal successors, (780), 10 states have internal predecessors, (780), 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) [2022-07-19 21:14:57,632 INFO L186 Difference]: Start difference. First operand has 102 places, 83 transitions, 316 flow. Second operand 9 states and 571 transitions. [2022-07-19 21:14:57,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 83 transitions, 382 flow [2022-07-19 21:14:57,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 83 transitions, 358 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-07-19 21:14:57,640 INFO L242 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2022-07-19 21:14:57,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2022-07-19 21:14:57,642 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2022-07-19 21:14:57,643 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2022-07-19 21:14:57,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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) [2022-07-19 21:14:57,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-19 21:14:57,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-19 21:14:57,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-19 21:14:57,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:14:57,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:14:57,872 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-07-19 21:14:57,876 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:14:57,876 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:14:57,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:14:57 BasicIcfg [2022-07-19 21:14:57,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:14:57,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:14:57,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:14:57,880 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:14:57,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:54" (3/4) ... [2022-07-19 21:14:57,883 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:14:57,889 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread [2022-07-19 21:14:57,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-19 21:14:57,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-19 21:14:57,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:14:57,892 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:14:57,918 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:14:57,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:14:57,919 INFO L158 Benchmark]: Toolchain (without parser) took 4035.36ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 56.5MB in the beginning and 39.4MB in the end (delta: 17.1MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2022-07-19 21:14:57,922 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 70.0MB in the beginning and 69.9MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:14:57,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.09ms. Allocated memory is still 92.3MB. Free memory was 56.3MB in the beginning and 57.8MB in the end (delta: -1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:14:57,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.81ms. Allocated memory is still 92.3MB. Free memory was 57.8MB in the beginning and 56.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:14:57,923 INFO L158 Benchmark]: Boogie Preprocessor took 32.27ms. Allocated memory is still 92.3MB. Free memory was 56.0MB in the beginning and 54.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:14:57,924 INFO L158 Benchmark]: RCFGBuilder took 345.75ms. Allocated memory is still 92.3MB. Free memory was 54.4MB in the beginning and 42.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 21:14:57,924 INFO L158 Benchmark]: TraceAbstraction took 3097.10ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 42.2MB in the beginning and 42.5MB in the end (delta: -321.3kB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-19 21:14:57,924 INFO L158 Benchmark]: Witness Printer took 38.49ms. Allocated memory is still 117.4MB. Free memory was 42.5MB in the beginning and 39.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:14:57,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 70.0MB in the beginning and 69.9MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.09ms. Allocated memory is still 92.3MB. Free memory was 56.3MB in the beginning and 57.8MB in the end (delta: -1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.81ms. Allocated memory is still 92.3MB. Free memory was 57.8MB in the beginning and 56.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.27ms. Allocated memory is still 92.3MB. Free memory was 56.0MB in the beginning and 54.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 345.75ms. Allocated memory is still 92.3MB. Free memory was 54.4MB in the beginning and 42.8MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3097.10ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 42.2MB in the beginning and 42.5MB in the end (delta: -321.3kB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 38.49ms. Allocated memory is still 117.4MB. Free memory was 42.5MB in the beginning and 39.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 706]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 89 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: 3.0s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 163 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 19 mSDtfsCounter, 163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 392 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=4, InterpolantAutomatonStates: 45, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 529 NumberOfCodeBlocks, 504 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 645 ConstructedInterpolants, 0 QuantifiedInterpolants, 925 SizeOfPredicates, 12 NumberOfNonLiveVariables, 453 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 112/281 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! [2022-07-19 21:14:57,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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