./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.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 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:16:18,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:16:18,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:16:18,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:16:18,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:16:18,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:16:18,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:16:18,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:16:18,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:16:18,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:16:18,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:16:18,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:16:18,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:16:18,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:16:18,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:16:18,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:16:18,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:16:18,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:16:18,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:16:18,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:16:18,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:16:18,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:16:18,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:16:18,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:16:18,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:16:18,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:16:18,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:16:18,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:16:18,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:16:18,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:16:18,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:16:18,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:16:18,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:16:18,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:16:18,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:16:18,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:16:18,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:16:18,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:16:18,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:16:18,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:16:18,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:16:18,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:16:18,643 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:16:18,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:16:18,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:16:18,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:16:18,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:16:18,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:16:18,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:16:18,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:16:18,647 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:16:18,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:16:18,648 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:16:18,648 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:16:18,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:16:18,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:16:18,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:16:18,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:16:18,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:16:18,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:16:18,650 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:16:18,650 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:16:18,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:16:18,650 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:16:18,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:16:18,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:16:18,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:16:18,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:16:18,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:16:18,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:16:18,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:16:18,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:16:18,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:16:18,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:16:18,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:16:18,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:16:18,653 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:16:18,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:16:18,654 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:16:18,654 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:16:18,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:16:18,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:16:18,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:16:18,965 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:16:18,965 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:16:18,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-08-30 14:16:20,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:16:20,349 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:16:20,350 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-08-30 14:16:20,373 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b35ae70d/73060e4358c04ab49065dc4779a9711f/FLAG27109f1b8 [2023-08-30 14:16:20,387 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b35ae70d/73060e4358c04ab49065dc4779a9711f [2023-08-30 14:16:20,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:16:20,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:16:20,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:16:20,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:16:20,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:16:20,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce2b74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20, skipping insertion in model container [2023-08-30 14:16:20,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:16:20,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:16:20,691 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-08-30 14:16:20,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:16:20,732 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:16:20,777 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-08-30 14:16:20,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:16:20,826 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:16:20,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20 WrapperNode [2023-08-30 14:16:20,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:16:20,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:16:20,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:16:20,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:16:20,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,888 INFO L138 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-08-30 14:16:20,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:16:20,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:16:20,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:16:20,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:16:20,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,931 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:16:20,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:16:20,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:16:20,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:16:20,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (1/1) ... [2023-08-30 14:16:20,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:16:20,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:16:20,971 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) [2023-08-30 14:16:20,993 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 [2023-08-30 14:16:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:16:21,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:16:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:16:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:16:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:16:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:16:21,009 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:16:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:16:21,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:16:21,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:16:21,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:16:21,011 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:16:21,131 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:16:21,133 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:16:21,318 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:16:21,325 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:16:21,326 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-30 14:16:21,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:16:21 BoogieIcfgContainer [2023-08-30 14:16:21,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:16:21,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:16:21,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:16:21,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:16:21,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:16:20" (1/3) ... [2023-08-30 14:16:21,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e999a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:16:21, skipping insertion in model container [2023-08-30 14:16:21,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:16:20" (2/3) ... [2023-08-30 14:16:21,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e999a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:16:21, skipping insertion in model container [2023-08-30 14:16:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:16:21" (3/3) ... [2023-08-30 14:16:21,346 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2023-08-30 14:16:21,354 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:16:21,363 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:16:21,363 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 14:16:21,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:16:21,453 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:16:21,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 111 transitions, 230 flow [2023-08-30 14:16:21,569 INFO L130 PetriNetUnfolder]: 9/110 cut-off events. [2023-08-30 14:16:21,569 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:16:21,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 9/110 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 62. Up to 3 conditions per place. [2023-08-30 14:16:21,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 111 transitions, 230 flow [2023-08-30 14:16:21,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 101 transitions, 205 flow [2023-08-30 14:16:21,583 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:16:21,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 101 transitions, 205 flow [2023-08-30 14:16:21,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 101 transitions, 205 flow [2023-08-30 14:16:21,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 101 transitions, 205 flow [2023-08-30 14:16:21,636 INFO L130 PetriNetUnfolder]: 9/101 cut-off events. [2023-08-30 14:16:21,637 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:21,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 9/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 151 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 62. Up to 3 conditions per place. [2023-08-30 14:16:21,640 INFO L119 LiptonReduction]: Number of co-enabled transitions 1722 [2023-08-30 14:16:24,878 INFO L134 LiptonReduction]: Checked pairs total: 3361 [2023-08-30 14:16:24,879 INFO L136 LiptonReduction]: Total number of compositions: 90 [2023-08-30 14:16:24,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:16:24,897 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e764122, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:16:24,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 14:16:24,902 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-08-30 14:16:24,903 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:24,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:24,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:16:24,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 14:16:24,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash 397111929, now seen corresponding path program 1 times [2023-08-30 14:16:24,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:24,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246915312] [2023-08-30 14:16:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:16:25,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246915312] [2023-08-30 14:16:25,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246915312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:25,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:25,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:16:25,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352092468] [2023-08-30 14:16:25,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:25,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:16:25,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:25,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:16:25,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:16:25,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 201 [2023-08-30 14:16:25,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 29 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2023-08-30 14:16:25,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:25,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 201 [2023-08-30 14:16:25,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:25,653 INFO L130 PetriNetUnfolder]: 46/141 cut-off events. [2023-08-30 14:16:25,654 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:16:25,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 141 events. 46/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 511 event pairs, 0 based on Foata normal form. 5/132 useless extension candidates. Maximal degree in co-relation 255. Up to 67 conditions per place. [2023-08-30 14:16:25,657 INFO L137 encePairwiseOnDemand]: 185/201 looper letters, 19 selfloop transitions, 5 changer transitions 8/35 dead transitions. [2023-08-30 14:16:25,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 35 transitions, 137 flow [2023-08-30 14:16:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:16:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:16:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2023-08-30 14:16:25,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034825870646766 [2023-08-30 14:16:25,682 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2023-08-30 14:16:25,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2023-08-30 14:16:25,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:25,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2023-08-30 14:16:25,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 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) [2023-08-30 14:16:25,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-08-30 14:16:25,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 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) [2023-08-30 14:16:25,703 INFO L175 Difference]: Start difference. First operand has 25 places, 29 transitions, 61 flow. Second operand 5 states and 506 transitions. [2023-08-30 14:16:25,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 35 transitions, 137 flow [2023-08-30 14:16:25,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 35 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:16:25,706 INFO L231 Difference]: Finished difference. Result has 27 places, 16 transitions, 49 flow [2023-08-30 14:16:25,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=27, PETRI_TRANSITIONS=16} [2023-08-30 14:16:25,713 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-30 14:16:25,713 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 16 transitions, 49 flow [2023-08-30 14:16:25,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2023-08-30 14:16:25,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:25,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:25,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:16:25,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 14:16:25,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2021386954, now seen corresponding path program 1 times [2023-08-30 14:16:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:25,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412434498] [2023-08-30 14:16:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:16:25,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:25,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412434498] [2023-08-30 14:16:25,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412434498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:25,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:25,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:16:25,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428115780] [2023-08-30 14:16:25,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:25,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:16:25,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:25,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:16:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:16:25,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 201 [2023-08-30 14:16:25,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 16 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-08-30 14:16:25,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:25,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 201 [2023-08-30 14:16:25,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:25,907 INFO L130 PetriNetUnfolder]: 21/71 cut-off events. [2023-08-30 14:16:25,907 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 14:16:25,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 71 events. 21/71 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 205 event pairs, 12 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 144. Up to 34 conditions per place. [2023-08-30 14:16:25,908 INFO L137 encePairwiseOnDemand]: 199/201 looper letters, 14 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-30 14:16:25,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 83 flow [2023-08-30 14:16:25,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:16:25,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:16:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-30 14:16:25,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49917081260364843 [2023-08-30 14:16:25,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-30 14:16:25,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-30 14:16:25,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:25,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-30 14:16:25,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2023-08-30 14:16:25,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-08-30 14:16:25,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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) [2023-08-30 14:16:25,913 INFO L175 Difference]: Start difference. First operand has 27 places, 16 transitions, 49 flow. Second operand 3 states and 301 transitions. [2023-08-30 14:16:25,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 83 flow [2023-08-30 14:16:25,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:16:25,914 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 42 flow [2023-08-30 14:16:25,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-30 14:16:25,915 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -4 predicate places. [2023-08-30 14:16:25,915 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 42 flow [2023-08-30 14:16:25,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-08-30 14:16:25,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:16:25,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:16:25,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:16:25,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-08-30 14:16:25,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:16:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2021386955, now seen corresponding path program 1 times [2023-08-30 14:16:25,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:16:25,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289644330] [2023-08-30 14:16:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:16:25,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:16:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:16:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:16:26,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:16:26,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289644330] [2023-08-30 14:16:26,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289644330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:16:26,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:16:26,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 14:16:26,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601805979] [2023-08-30 14:16:26,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:16:26,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:16:26,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:16:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:16:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:16:26,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 201 [2023-08-30 14:16:26,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2023-08-30 14:16:26,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:16:26,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 201 [2023-08-30 14:16:26,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:16:26,536 INFO L130 PetriNetUnfolder]: 16/57 cut-off events. [2023-08-30 14:16:26,537 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 14:16:26,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 57 events. 16/57 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 0 based on Foata normal form. 7/64 useless extension candidates. Maximal degree in co-relation 114. Up to 9 conditions per place. [2023-08-30 14:16:26,537 INFO L137 encePairwiseOnDemand]: 193/201 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-08-30 14:16:26,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 32 transitions, 140 flow [2023-08-30 14:16:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 14:16:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 14:16:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 901 transitions. [2023-08-30 14:16:26,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482587064676617 [2023-08-30 14:16:26,540 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 901 transitions. [2023-08-30 14:16:26,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 901 transitions. [2023-08-30 14:16:26,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:16:26,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 901 transitions. [2023-08-30 14:16:26,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.1) internal successors, (901), 10 states have internal predecessors, (901), 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) [2023-08-30 14:16:26,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 201.0) internal successors, (2211), 11 states have internal predecessors, (2211), 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) [2023-08-30 14:16:26,547 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 201.0) internal successors, (2211), 11 states have internal predecessors, (2211), 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) [2023-08-30 14:16:26,547 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 42 flow. Second operand 10 states and 901 transitions. [2023-08-30 14:16:26,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 32 transitions, 140 flow [2023-08-30 14:16:26,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:16:26,548 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-30 14:16:26,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-30 14:16:26,549 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-30 14:16:26,549 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-30 14:16:26,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2023-08-30 14:16:26,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-08-30 14:16:26,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-08-30 14:16:26,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-08-30 14:16:26,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-08-30 14:16:26,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-08-30 14:16:26,553 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-08-30 14:16:26,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-08-30 14:16:26,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-08-30 14:16:26,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-08-30 14:16:26,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:16:26,554 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 14:16:26,559 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 14:16:26,559 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 14:16:26,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:16:26 BasicIcfg [2023-08-30 14:16:26,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 14:16:26,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 14:16:26,562 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 14:16:26,563 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 14:16:26,563 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:16:21" (3/4) ... [2023-08-30 14:16:26,565 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 14:16:26,570 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-30 14:16:26,573 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-08-30 14:16:26,573 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 14:16:26,573 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 14:16:26,573 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 14:16:26,602 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 14:16:26,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 14:16:26,603 INFO L158 Benchmark]: Toolchain (without parser) took 6208.67ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 49.7MB in the beginning and 65.2MB in the end (delta: -15.5MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2023-08-30 14:16:26,604 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:16:26,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.36ms. Allocated memory is still 73.4MB. Free memory was 49.6MB in the beginning and 46.5MB in the end (delta: 3.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2023-08-30 14:16:26,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.79ms. Allocated memory is still 73.4MB. Free memory was 46.5MB in the beginning and 44.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:16:26,605 INFO L158 Benchmark]: Boogie Preprocessor took 50.72ms. Allocated memory is still 73.4MB. Free memory was 44.5MB in the beginning and 42.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:16:26,605 INFO L158 Benchmark]: RCFGBuilder took 388.03ms. Allocated memory is still 73.4MB. Free memory was 42.8MB in the beginning and 28.0MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 14:16:26,605 INFO L158 Benchmark]: TraceAbstraction took 5222.24ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 51.3MB in the beginning and 67.3MB in the end (delta: -16.0MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-08-30 14:16:26,606 INFO L158 Benchmark]: Witness Printer took 40.56ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 65.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:16:26,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.36ms. Allocated memory is still 73.4MB. Free memory was 49.6MB in the beginning and 46.5MB in the end (delta: 3.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.79ms. Allocated memory is still 73.4MB. Free memory was 46.5MB in the beginning and 44.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.72ms. Allocated memory is still 73.4MB. Free memory was 44.5MB in the beginning and 42.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 388.03ms. Allocated memory is still 73.4MB. Free memory was 42.8MB in the beginning and 28.0MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5222.24ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 51.3MB in the beginning and 67.3MB in the end (delta: -16.0MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 40.56ms. Allocated memory is still 107.0MB. Free memory was 67.3MB in the beginning and 65.2MB 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: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 96 PlacesBefore, 25 PlacesAfterwards, 101 TransitionsBefore, 29 TransitionsAfterwards, 1722 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 90 TotalNumberOfCompositions, 3361 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1698, independent: 1557, independent conditional: 0, independent unconditional: 1557, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 963, independent: 930, independent conditional: 0, independent unconditional: 930, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1698, independent: 627, independent conditional: 0, independent unconditional: 627, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 963, unknown conditional: 0, unknown unconditional: 963] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: 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, 140 locations, 9 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: 5.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 386 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 265 mSDsluCounter, 124 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 124 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 746 IncrementalHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 746 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, InterpolantAutomatonStates: 18, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 14:16:26,631 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