./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f4b24e32 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/09-regions_19-nested_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12bbf3623faa1d8cb0ae406b9406d293839854c20d2fb62622ec841c419248fb --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:05:14,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:05:14,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:05:14,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:05:14,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:05:14,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:05:14,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:05:14,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:05:14,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:05:14,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:05:14,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:05:14,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:05:14,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:05:14,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:05:14,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:05:14,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:05:14,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:05:14,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:05:14,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:05:14,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:05:14,349 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:05:14,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:05:14,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:05:14,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:05:14,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:05:14,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:05:14,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:05:14,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:05:14,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:05:14,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:05:14,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:05:14,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:05:14,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:05:14,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:05:14,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:05:14,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:05:14,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:05:14,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:05:14,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:05:14,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:05:14,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:05:14,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:05:14,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:05:14,388 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:05:14,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:05:14,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:05:14,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:05:14,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:05:14,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:05:14,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:05:14,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:05:14,390 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:05:14,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:05:14,391 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:05:14,391 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:05:14,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:05:14,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:05:14,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:05:14,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:05:14,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:05:14,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:05:14,392 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:05:14,393 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:05:14,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:05:14,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:05:14,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:05:14,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:05:14,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:05:14,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:05:14,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:05:14,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:05:14,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:05:14,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:05:14,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:05:14,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:05:14,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:05:14,395 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12bbf3623faa1d8cb0ae406b9406d293839854c20d2fb62622ec841c419248fb [2022-07-14 14:05:14,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:05:14,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:05:14,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:05:14,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:05:14,608 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:05:14,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2022-07-14 14:05:14,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b48f525f/36a05963ba07472487c9486ad44a4aed/FLAG569de0431 [2022-07-14 14:05:15,103 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:05:15,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2022-07-14 14:05:15,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b48f525f/36a05963ba07472487c9486ad44a4aed/FLAG569de0431 [2022-07-14 14:05:15,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b48f525f/36a05963ba07472487c9486ad44a4aed [2022-07-14 14:05:15,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:05:15,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:05:15,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:05:15,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:05:15,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:05:15,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3e0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15, skipping insertion in model container [2022-07-14 14:05:15,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:05:15,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:05:15,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:05:15,677 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:05:15,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:05:15,780 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:05:15,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15 WrapperNode [2022-07-14 14:05:15,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:05:15,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:05:15,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:05:15,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:05:15,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,846 INFO L137 Inliner]: procedures = 371, calls = 34, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 121 [2022-07-14 14:05:15,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:05:15,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:05:15,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:05:15,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:05:15,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:05:15,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:05:15,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:05:15,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:05:15,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (1/1) ... [2022-07-14 14:05:15,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:05:15,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:05:15,918 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) [2022-07-14 14:05:15,920 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 [2022-07-14 14:05:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:05:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 14:05:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:05:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 14:05:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:05:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-14 14:05:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 14:05:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 14:05:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 14:05:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-14 14:05:15,951 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-14 14:05:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 14:05:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:05:15,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:05:15,952 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-14 14:05:16,073 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:05:16,074 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:05:16,265 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:05:16,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:05:16,271 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 14:05:16,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:05:16 BoogieIcfgContainer [2022-07-14 14:05:16,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:05:16,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:05:16,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:05:16,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:05:16,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:05:15" (1/3) ... [2022-07-14 14:05:16,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2378b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:05:16, skipping insertion in model container [2022-07-14 14:05:16,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:05:15" (2/3) ... [2022-07-14 14:05:16,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2378b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:05:16, skipping insertion in model container [2022-07-14 14:05:16,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:05:16" (3/3) ... [2022-07-14 14:05:16,279 INFO L111 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2022-07-14 14:05:16,282 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:05:16,288 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:05:16,288 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-14 14:05:16,289 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:05:16,327 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 14:05:16,358 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:05:16,365 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 152 transitions, 309 flow [2022-07-14 14:05:16,367 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 152 transitions, 309 flow [2022-07-14 14:05:16,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 152 places, 152 transitions, 309 flow [2022-07-14 14:05:16,411 INFO L129 PetriNetUnfolder]: 4/151 cut-off events. [2022-07-14 14:05:16,412 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-14 14:05:16,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 151 events. 4/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-07-14 14:05:16,419 INFO L116 LiptonReduction]: Number of co-enabled transitions 1672 [2022-07-14 14:05:40,125 INFO L131 LiptonReduction]: Checked pairs total: 2180 [2022-07-14 14:05:40,125 INFO L133 LiptonReduction]: Total number of compositions: 145 [2022-07-14 14:05:40,130 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 19 transitions, 43 flow [2022-07-14 14:05:40,138 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5 states, 2 states have (on average 2.5) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-14 14:05:40,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:05:40,154 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=FINITE_AUTOMATA, 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@42105a76, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19098dca [2022-07-14 14:05:40,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-14 14:05:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 5 states, 2 states have (on average 2.5) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-14 14:05:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:05:40,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:05:40,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:05:40,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-14 14:05:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:05:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash 17299, now seen corresponding path program 1 times [2022-07-14 14:05:40,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:05:40,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169510390] [2022-07-14 14:05:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:05:40,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:05:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:05:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:05:40,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:05:40,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169510390] [2022-07-14 14:05:40,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169510390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:05:40,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:05:40,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:05:40,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056951757] [2022-07-14 14:05:40,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:05:40,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 14:05:40,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:05:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 14:05:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 14:05:40,295 INFO L87 Difference]: Start difference. First operand has 5 states, 2 states have (on average 2.5) internal successors, (5), 4 states have internal predecessors, (5), 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) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-07-14 14:05:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:05:40,337 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2022-07-14 14:05:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 14:05:40,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2022-07-14 14:05:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:05:40,343 INFO L225 Difference]: With dead ends: 4 [2022-07-14 14:05:40,343 INFO L226 Difference]: Without dead ends: 3 [2022-07-14 14:05:40,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 14:05:40,349 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:05:40,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:05:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states. [2022-07-14 14:05:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2022-07-14 14:05:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-07-14 14:05:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2022-07-14 14:05:40,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states and 3 transitions. Word has length 2 [2022-07-14 14:05:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:05:40,370 INFO L495 AbstractCegarLoop]: Abstraction has 3 states and 3 transitions. [2022-07-14 14:05:40,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-07-14 14:05:40,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states and 3 transitions. [2022-07-14 14:05:40,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-14 14:05:40,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:05:40,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-14 14:05:40,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 14:05:40,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-14 14:05:40,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:05:40,371 INFO L85 PathProgramCache]: Analyzing trace with hash 17300, now seen corresponding path program 1 times [2022-07-14 14:05:40,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:05:40,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246726982] [2022-07-14 14:05:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:05:40,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:05:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:05:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:05:40,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:05:40,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246726982] [2022-07-14 14:05:40,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246726982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:05:40,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:05:40,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:05:40,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968001391] [2022-07-14 14:05:40,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:05:40,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:05:40,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:05:40,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:05:40,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:05:40,427 INFO L87 Difference]: Start difference. First operand 3 states and 3 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-07-14 14:05:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:05:40,433 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2022-07-14 14:05:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:05:40,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2022-07-14 14:05:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:05:40,434 INFO L225 Difference]: With dead ends: 4 [2022-07-14 14:05:40,434 INFO L226 Difference]: Without dead ends: 4 [2022-07-14 14:05:40,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:05:40,437 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:05:40,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:05:40,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states. [2022-07-14 14:05:40,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2022-07-14 14:05:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-14 14:05:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2022-07-14 14:05:40,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states and 4 transitions. Word has length 2 [2022-07-14 14:05:40,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:05:40,438 INFO L495 AbstractCegarLoop]: Abstraction has 4 states and 4 transitions. [2022-07-14 14:05:40,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-07-14 14:05:40,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 4 transitions. [2022-07-14 14:05:40,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:05:40,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:05:40,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:05:40,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 14:05:40,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-14 14:05:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:05:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash 537170, now seen corresponding path program 1 times [2022-07-14 14:05:40,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:05:40,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419341350] [2022-07-14 14:05:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:05:40,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:05:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:05:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:05:40,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:05:40,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419341350] [2022-07-14 14:05:40,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419341350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:05:40,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:05:40,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:05:40,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794974609] [2022-07-14 14:05:40,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:05:40,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:05:40,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:05:40,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:05:40,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:05:40,486 INFO L87 Difference]: Start difference. First operand 4 states and 4 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-07-14 14:05:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:05:40,490 INFO L93 Difference]: Finished difference Result 3 states and 3 transitions. [2022-07-14 14:05:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:05:40,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2022-07-14 14:05:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:05:40,491 INFO L225 Difference]: With dead ends: 3 [2022-07-14 14:05:40,491 INFO L226 Difference]: Without dead ends: 0 [2022-07-14 14:05:40,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:05:40,492 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:05:40,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:05:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-14 14:05:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-14 14:05:40,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-07-14 14:05:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 14:05:40,508 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2022-07-14 14:05:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:05:40,508 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:05:40,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-07-14 14:05:40,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-14 14:05:40,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-14 14:05:40,513 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 3 remaining) [2022-07-14 14:05:40,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 3 remaining) [2022-07-14 14:05:40,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-14 14:05:40,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 14:05:40,518 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-14 14:05:40,520 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-14 14:05:40,520 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 14:05:40,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 02:05:40 BasicIcfg [2022-07-14 14:05:40,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 14:05:40,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 14:05:40,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 14:05:40,522 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 14:05:40,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:05:16" (3/4) ... [2022-07-14 14:05:40,525 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-14 14:05:40,531 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-14 14:05:40,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-14 14:05:40,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-07-14 14:05:40,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-14 14:05:40,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-14 14:05:40,561 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 14:05:40,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 14:05:40,562 INFO L158 Benchmark]: Toolchain (without parser) took 25414.06ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 57.7MB in the beginning and 64.5MB in the end (delta: -6.7MB). Peak memory consumption was 62.0MB. Max. memory is 16.1GB. [2022-07-14 14:05:40,563 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 46.6MB in the beginning and 46.5MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:05:40,563 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.83ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 57.5MB in the beginning and 78.0MB in the end (delta: -20.5MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2022-07-14 14:05:40,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.81ms. Allocated memory is still 109.1MB. Free memory was 78.0MB in the beginning and 74.8MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:05:40,563 INFO L158 Benchmark]: Boogie Preprocessor took 40.79ms. Allocated memory is still 109.1MB. Free memory was 74.8MB in the beginning and 73.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:05:40,564 INFO L158 Benchmark]: RCFGBuilder took 380.38ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 55.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-14 14:05:40,564 INFO L158 Benchmark]: TraceAbstraction took 24247.91ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 55.0MB in the beginning and 67.6MB in the end (delta: -12.6MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2022-07-14 14:05:40,564 INFO L158 Benchmark]: Witness Printer took 39.52ms. Allocated memory is still 159.4MB. Free memory was 67.6MB in the beginning and 64.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:05:40,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 46.6MB in the beginning and 46.5MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.83ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 57.5MB in the beginning and 78.0MB in the end (delta: -20.5MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.81ms. Allocated memory is still 109.1MB. Free memory was 78.0MB in the beginning and 74.8MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.79ms. Allocated memory is still 109.1MB. Free memory was 74.8MB in the beginning and 73.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 380.38ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 55.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 24247.91ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 55.0MB in the beginning and 67.6MB in the end (delta: -12.6MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. * Witness Printer took 39.52ms. Allocated memory is still 159.4MB. Free memory was 67.6MB in the beginning and 64.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.8s, 152 PlacesBefore, 22 PlacesAfterwards, 152 TransitionsBefore, 19 TransitionsAfterwards, 1672 CoEnabledTransitionPairs, 8 FixpointIterations, 84 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 145 TotalNumberOfCompositions, 2180 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1484, positive: 1341, positive conditional: 0, positive unconditional: 1341, negative: 143, negative conditional: 0, negative unconditional: 143, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1113, positive: 1072, positive conditional: 0, positive unconditional: 1072, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1113, positive: 1069, positive conditional: 0, positive unconditional: 1069, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 118, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 114, negative conditional: 0, negative unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1484, positive: 269, positive conditional: 0, positive unconditional: 269, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 1113, unknown conditional: 0, unknown unconditional: 1113] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 194 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 24.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 23.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-14 14:05:40,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE