./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.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 8627cbce136f39d723fc0eaadf7d8371bf261a07ec5ac59da2e79df34069083d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:32:18,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:32:18,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:32:18,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:32:18,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:32:18,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:32:18,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:32:18,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:32:18,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:32:18,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:32:18,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:32:18,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:32:18,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:32:18,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:32:18,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:32:18,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:32:18,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:32:18,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:32:18,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:32:18,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:32:18,594 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:32:18,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:32:18,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:32:18,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:32:18,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:32:18,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:32:18,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:32:18,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:32:18,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:32:18,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:32:18,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:32:18,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:32:18,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:32:18,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:32:18,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:32:18,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:32:18,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:32:18,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:32:18,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:32:18,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:32:18,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:32:18,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:32:18,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:32:18,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:32:18,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:32:18,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:32:18,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:32:18,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:32:18,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:32:18,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:32:18,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:32:18,633 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:32:18,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:32:18,634 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:32:18,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:32:18,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:32:18,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:32:18,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:32:18,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:32:18,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:32:18,635 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:32:18,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:32:18,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:32:18,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:32:18,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:32:18,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:32:18,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:32:18,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:32:18,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:32:18,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:32:18,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:32:18,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:32:18,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:32:18,638 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:32:18,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:32:18,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:32:18,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8627cbce136f39d723fc0eaadf7d8371bf261a07ec5ac59da2e79df34069083d [2022-07-22 21:32:18,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:32:18,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:32:18,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:32:18,862 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:32:18,863 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:32:18,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2022-07-22 21:32:18,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b175cd36/8801ea1261f44dc5b7b60667fbade857/FLAG8e0d19e2f [2022-07-22 21:32:19,328 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:32:19,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2022-07-22 21:32:19,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b175cd36/8801ea1261f44dc5b7b60667fbade857/FLAG8e0d19e2f [2022-07-22 21:32:19,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b175cd36/8801ea1261f44dc5b7b60667fbade857 [2022-07-22 21:32:19,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:32:19,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:32:19,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:32:19,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:32:19,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:32:19,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@662024da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19, skipping insertion in model container [2022-07-22 21:32:19,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:32:19,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:32:19,518 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/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2022-07-22 21:32:19,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:32:19,638 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:32:19,649 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/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2022-07-22 21:32:19,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:32:19,705 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:32:19,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19 WrapperNode [2022-07-22 21:32:19,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:32:19,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:32:19,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:32:19,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:32:19,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,755 INFO L137 Inliner]: procedures = 162, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2022-07-22 21:32:19,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:32:19,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:32:19,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:32:19,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:32:19,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:32:19,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:32:19,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:32:19,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:32:19,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (1/1) ... [2022-07-22 21:32:19,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:32:19,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:32:19,811 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) [2022-07-22 21:32:19,813 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 [2022-07-22 21:32:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-07-22 21:32:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-07-22 21:32:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:32:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:32:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:32:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:32:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:32:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:32:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:32:19,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:32:19,842 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:32:19,952 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:32:19,953 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:32:20,106 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:32:20,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:32:20,110 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 21:32:20,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:32:20 BoogieIcfgContainer [2022-07-22 21:32:20,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:32:20,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:32:20,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:32:20,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:32:20,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:32:19" (1/3) ... [2022-07-22 21:32:20,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2648548b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:32:20, skipping insertion in model container [2022-07-22 21:32:20,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:19" (2/3) ... [2022-07-22 21:32:20,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2648548b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:32:20, skipping insertion in model container [2022-07-22 21:32:20,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:32:20" (3/3) ... [2022-07-22 21:32:20,124 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2022-07-22 21:32:20,137 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:32:20,143 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:32:20,143 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:32:20,143 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:32:20,176 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:32:20,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 72 transitions, 149 flow [2022-07-22 21:32:20,233 INFO L129 PetriNetUnfolder]: 4/71 cut-off events. [2022-07-22 21:32:20,233 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:32:20,235 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 71 events. 4/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2022-07-22 21:32:20,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 72 transitions, 149 flow [2022-07-22 21:32:20,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 137 flow [2022-07-22 21:32:20,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:32:20,251 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@12e44c19, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@573e51ae [2022-07-22 21:32:20,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:32:20,262 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2022-07-22 21:32:20,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:32:20,262 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:32:20,263 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] [2022-07-22 21:32:20,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 21:32:20,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:32:20,267 INFO L85 PathProgramCache]: Analyzing trace with hash -824948169, now seen corresponding path program 1 times [2022-07-22 21:32:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:32:20,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056419462] [2022-07-22 21:32:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:32:20,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:32:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:32:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:32:20,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:32:20,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056419462] [2022-07-22 21:32:20,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056419462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:32:20,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:32:20,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:32:20,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171138143] [2022-07-22 21:32:20,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:32:20,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:32:20,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:32:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:32:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:32:20,573 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 72 [2022-07-22 21:32:20,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 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) [2022-07-22 21:32:20,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:32:20,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 72 [2022-07-22 21:32:20,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:32:20,646 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2022-07-22 21:32:20,646 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:32:20,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 78 events. 2/78 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 38 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 56. Up to 8 conditions per place. [2022-07-22 21:32:20,648 INFO L132 encePairwiseOnDemand]: 66/72 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2022-07-22 21:32:20,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 167 flow [2022-07-22 21:32:20,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:32:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:32:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 352 transitions. [2022-07-22 21:32:20,662 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2022-07-22 21:32:20,663 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 352 transitions. [2022-07-22 21:32:20,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 352 transitions. [2022-07-22 21:32:20,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:32:20,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 352 transitions. [2022-07-22 21:32:20,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 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) [2022-07-22 21:32:20,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-07-22 21:32:20,680 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 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) [2022-07-22 21:32:20,682 INFO L186 Difference]: Start difference. First operand has 68 places, 67 transitions, 137 flow. Second operand 6 states and 352 transitions. [2022-07-22 21:32:20,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 167 flow [2022-07-22 21:32:20,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:32:20,688 INFO L242 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2022-07-22 21:32:20,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2022-07-22 21:32:20,693 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2022-07-22 21:32:20,694 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2022-07-22 21:32:20,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.4) internal successors, (287), 5 states have internal predecessors, (287), 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) [2022-07-22 21:32:20,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2022-07-22 21:32:20,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-22 21:32:20,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-22 21:32:20,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:32:20,698 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:32:20,704 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:32:20,704 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:32:20,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:32:20 BasicIcfg [2022-07-22 21:32:20,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:32:20,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:32:20,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:32:20,710 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:32:20,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:32:20" (3/4) ... [2022-07-22 21:32:20,713 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:32:20,717 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2022-07-22 21:32:20,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-22 21:32:20,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 21:32:20,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:32:20,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:32:20,741 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:32:20,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:32:20,742 INFO L158 Benchmark]: Toolchain (without parser) took 1394.06ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 61.8MB in the beginning and 68.6MB in the end (delta: -6.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-07-22 21:32:20,742 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 51.2MB in the beginning and 51.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:32:20,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.46ms. Allocated memory is still 96.5MB. Free memory was 61.6MB in the beginning and 62.0MB in the end (delta: -346.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 21:32:20,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.24ms. Allocated memory is still 96.5MB. Free memory was 62.0MB in the beginning and 59.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:32:20,743 INFO L158 Benchmark]: Boogie Preprocessor took 29.55ms. Allocated memory is still 96.5MB. Free memory was 59.9MB in the beginning and 58.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:32:20,743 INFO L158 Benchmark]: RCFGBuilder took 325.55ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 58.7MB in the beginning and 107.8MB in the end (delta: -49.1MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2022-07-22 21:32:20,743 INFO L158 Benchmark]: TraceAbstraction took 596.44ms. Allocated memory is still 132.1MB. Free memory was 107.2MB in the beginning and 70.7MB in the end (delta: 36.5MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2022-07-22 21:32:20,747 INFO L158 Benchmark]: Witness Printer took 30.97ms. Allocated memory is still 132.1MB. Free memory was 70.7MB in the beginning and 68.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:32:20,748 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 96.5MB. Free memory was 51.2MB in the beginning and 51.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.46ms. Allocated memory is still 96.5MB. Free memory was 61.6MB in the beginning and 62.0MB in the end (delta: -346.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.24ms. Allocated memory is still 96.5MB. Free memory was 62.0MB in the beginning and 59.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.55ms. Allocated memory is still 96.5MB. Free memory was 59.9MB in the beginning and 58.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 325.55ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 58.7MB in the beginning and 107.8MB in the end (delta: -49.1MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 596.44ms. Allocated memory is still 132.1MB. Free memory was 107.2MB in the beginning and 70.7MB in the end (delta: 36.5MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Witness Printer took 30.97ms. Allocated memory is still 132.1MB. Free memory was 70.7MB in the beginning and 68.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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, 95 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: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 6 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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! [2022-07-22 21:32:20,776 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