./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_25-single_acc.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/04-mutex_25-single_acc.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 c517f79a73060bc678a954192f1199959aeb325b084aab08d3d2f350bb51cb8f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:02:46,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:02:46,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:02:46,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:02:46,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:02:46,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:02:46,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:02:46,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:02:46,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:02:46,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:02:46,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:02:46,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:02:46,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:02:46,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:02:46,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:02:46,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:02:46,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:02:46,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:02:46,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:02:46,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:02:46,448 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:02:46,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:02:46,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:02:46,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:02:46,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:02:46,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:02:46,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:02:46,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:02:46,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:02:46,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:02:46,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:02:46,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:02:46,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:02:46,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:02:46,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:02:46,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:02:46,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:02:46,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:02:46,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:02:46,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:02:46,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:02:46,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:02:46,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:02:46,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:02:46,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:02:46,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:02:46,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:02:46,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:02:46,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:02:46,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:02:46,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:02:46,508 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:02:46,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:02:46,509 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:02:46,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:02:46,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:02:46,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:02:46,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:02:46,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:02:46,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:02:46,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:02:46,511 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:02:46,511 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:02:46,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:02:46,511 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:02:46,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:02:46,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:02:46,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:02:46,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:02:46,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:02:46,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:02:46,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:02:46,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:02:46,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:02:46,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:02:46,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:02:46,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c517f79a73060bc678a954192f1199959aeb325b084aab08d3d2f350bb51cb8f [2022-07-14 14:02:46,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:02:46,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:02:46,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:02:46,757 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:02:46,758 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:02:46,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_25-single_acc.i [2022-07-14 14:02:46,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9553c6017/59f4ece92c274ec7bde9b261f9d0b3c0/FLAGc1e105069 [2022-07-14 14:02:47,232 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:02:47,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_25-single_acc.i [2022-07-14 14:02:47,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9553c6017/59f4ece92c274ec7bde9b261f9d0b3c0/FLAGc1e105069 [2022-07-14 14:02:47,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9553c6017/59f4ece92c274ec7bde9b261f9d0b3c0 [2022-07-14 14:02:47,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:02:47,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:02:47,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:02:47,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:02:47,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:02:47,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:47,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3c025b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47, skipping insertion in model container [2022-07-14 14:02:47,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:47,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:02:47,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:02:47,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:02:47,905 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:02:47,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:02:47,969 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:02:47,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47 WrapperNode [2022-07-14 14:02:47,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:02:47,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:02:47,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:02:47,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:02:47,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:47,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:48,018 INFO L137 Inliner]: procedures = 159, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-07-14 14:02:48,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:02:48,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:02:48,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:02:48,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:02:48,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:48,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:48,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:48,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:48,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:48,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:48,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:48,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:02:48,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:02:48,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:02:48,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:02:48,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (1/1) ... [2022-07-14 14:02:48,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:02:48,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:02:48,089 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 14:02:48,109 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 14:02:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:02:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:02:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-14 14:02:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-14 14:02:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:02:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:02:48,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:02:48,135 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 14:02:48,216 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:02:48,218 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:02:48,316 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:02:48,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:02:48,336 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 14:02:48,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:02:48 BoogieIcfgContainer [2022-07-14 14:02:48,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:02:48,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:02:48,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:02:48,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:02:48,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:02:47" (1/3) ... [2022-07-14 14:02:48,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57787777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:02:48, skipping insertion in model container [2022-07-14 14:02:48,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:02:47" (2/3) ... [2022-07-14 14:02:48,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57787777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:02:48, skipping insertion in model container [2022-07-14 14:02:48,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:02:48" (3/3) ... [2022-07-14 14:02:48,345 INFO L111 eAbstractionObserver]: Analyzing ICFG 04-mutex_25-single_acc.i [2022-07-14 14:02:48,350 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:02:48,371 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:02:48,372 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-14 14:02:48,372 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:02:48,442 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-14 14:02:48,480 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:02:48,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 53 transitions, 116 flow [2022-07-14 14:02:48,508 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 53 transitions, 116 flow [2022-07-14 14:02:48,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 53 transitions, 116 flow [2022-07-14 14:02:48,556 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2022-07-14 14:02:48,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-14 14:02:48,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-07-14 14:02:48,562 INFO L116 LiptonReduction]: Number of co-enabled transitions 720 [2022-07-14 14:02:49,803 INFO L131 LiptonReduction]: Checked pairs total: 763 [2022-07-14 14:02:49,803 INFO L133 LiptonReduction]: Total number of compositions: 46 [2022-07-14 14:02:49,810 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2022-07-14 14:02:49,826 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 60 states, 50 states have (on average 2.4) internal successors, (120), 59 states have internal predecessors, (120), 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 14:02:49,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:02:49,845 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@224533ab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a347f5f [2022-07-14 14:02:49,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-14 14:02:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 2.4) internal successors, (120), 59 states have internal predecessors, (120), 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 14:02:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:02:49,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:02:49,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:02:49,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-07-14 14:02:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:02:49,856 INFO L85 PathProgramCache]: Analyzing trace with hash 180279, now seen corresponding path program 1 times [2022-07-14 14:02:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:02:49,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69421063] [2022-07-14 14:02:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:02:49,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:02:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:02:50,046 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 14:02:50,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:02:50,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69421063] [2022-07-14 14:02:50,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69421063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:02:50,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:02:50,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:02:50,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087546765] [2022-07-14 14:02:50,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:02:50,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:02:50,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:02:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:02:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:02:50,071 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 2.4) internal successors, (120), 59 states have internal predecessors, (120), 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 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 14:02:50,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:02:50,114 INFO L93 Difference]: Finished difference Result 48 states and 83 transitions. [2022-07-14 14:02:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:02:50,116 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 3 [2022-07-14 14:02:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:02:50,122 INFO L225 Difference]: With dead ends: 48 [2022-07-14 14:02:50,123 INFO L226 Difference]: Without dead ends: 42 [2022-07-14 14:02:50,123 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 14:02:50,129 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:02:50,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:02:50,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-14 14:02:50,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-07-14 14:02:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 2.0) internal successors, (66), 37 states have internal predecessors, (66), 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 14:02:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 66 transitions. [2022-07-14 14:02:50,161 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 66 transitions. Word has length 3 [2022-07-14 14:02:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:02:50,162 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 66 transitions. [2022-07-14 14:02:50,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 14:02:50,162 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2022-07-14 14:02:50,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 14:02:50,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:02:50,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 14:02:50,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 14:02:50,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-07-14 14:02:50,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:02:50,164 INFO L85 PathProgramCache]: Analyzing trace with hash 180280, now seen corresponding path program 1 times [2022-07-14 14:02:50,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:02:50,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371573434] [2022-07-14 14:02:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:02:50,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:02:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:02:50,201 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 14:02:50,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:02:50,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371573434] [2022-07-14 14:02:50,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371573434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:02:50,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:02:50,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:02:50,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045412222] [2022-07-14 14:02:50,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:02:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:02:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:02:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:02:50,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:02:50,204 INFO L87 Difference]: Start difference. First operand 38 states and 66 transitions. Second 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 14:02:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:02:50,223 INFO L93 Difference]: Finished difference Result 26 states and 37 transitions. [2022-07-14 14:02:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:02:50,224 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 3 [2022-07-14 14:02:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:02:50,224 INFO L225 Difference]: With dead ends: 26 [2022-07-14 14:02:50,224 INFO L226 Difference]: Without dead ends: 26 [2022-07-14 14:02:50,225 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 14:02:50,226 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:02:50,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:02:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-14 14:02:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-14 14:02:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 25 states have internal predecessors, (37), 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 14:02:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions. [2022-07-14 14:02:50,230 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 3 [2022-07-14 14:02:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:02:50,231 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 37 transitions. [2022-07-14 14:02:50,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 14:02:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions. [2022-07-14 14:02:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 14:02:50,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:02:50,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:02:50,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 14:02:50,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-07-14 14:02:50,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:02:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash -997000566, now seen corresponding path program 1 times [2022-07-14 14:02:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:02:50,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422676133] [2022-07-14 14:02:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:02:50,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:02:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:02:50,308 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 14:02:50,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:02:50,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422676133] [2022-07-14 14:02:50,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422676133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:02:50,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:02:50,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:02:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318082144] [2022-07-14 14:02:50,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:02:50,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:02:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:02:50,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:02:50,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:02:50,310 INFO L87 Difference]: Start difference. First operand 26 states and 37 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:02:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:02:50,342 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2022-07-14 14:02:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 14:02:50,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-07-14 14:02:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:02:50,343 INFO L225 Difference]: With dead ends: 24 [2022-07-14 14:02:50,343 INFO L226 Difference]: Without dead ends: 24 [2022-07-14 14:02:50,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:02:50,344 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:02:50,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:02:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-14 14:02:50,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-14 14:02:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.619047619047619) internal successors, (34), 23 states have internal predecessors, (34), 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 14:02:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2022-07-14 14:02:50,348 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 7 [2022-07-14 14:02:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:02:50,348 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2022-07-14 14:02:50,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:02:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2022-07-14 14:02:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 14:02:50,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:02:50,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:02:50,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 14:02:50,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-07-14 14:02:50,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:02:50,350 INFO L85 PathProgramCache]: Analyzing trace with hash -997000565, now seen corresponding path program 1 times [2022-07-14 14:02:50,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:02:50,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434769414] [2022-07-14 14:02:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:02:50,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:02:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:02:50,416 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 14:02:50,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:02:50,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434769414] [2022-07-14 14:02:50,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434769414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:02:50,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:02:50,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:02:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50036061] [2022-07-14 14:02:50,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:02:50,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:02:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:02:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:02:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:02:50,418 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:02:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:02:50,460 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2022-07-14 14:02:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:02:50,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-07-14 14:02:50,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:02:50,461 INFO L225 Difference]: With dead ends: 22 [2022-07-14 14:02:50,461 INFO L226 Difference]: Without dead ends: 18 [2022-07-14 14:02:50,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:02:50,463 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:02:50,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:02:50,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-14 14:02:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-14 14:02:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 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 14:02:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2022-07-14 14:02:50,465 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 7 [2022-07-14 14:02:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:02:50,466 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2022-07-14 14:02:50,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:02:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2022-07-14 14:02:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 14:02:50,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:02:50,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:02:50,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 14:02:50,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-07-14 14:02:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:02:50,467 INFO L85 PathProgramCache]: Analyzing trace with hash -997011962, now seen corresponding path program 1 times [2022-07-14 14:02:50,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:02:50,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073640688] [2022-07-14 14:02:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:02:50,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:02:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:02:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:02:50,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:02:50,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073640688] [2022-07-14 14:02:50,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073640688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:02:50,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:02:50,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:02:50,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543111164] [2022-07-14 14:02:50,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:02:50,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:02:50,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:02:50,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:02:50,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:02:50,535 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:02:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:02:50,561 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2022-07-14 14:02:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 14:02:50,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-07-14 14:02:50,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:02:50,563 INFO L225 Difference]: With dead ends: 16 [2022-07-14 14:02:50,563 INFO L226 Difference]: Without dead ends: 16 [2022-07-14 14:02:50,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:02:50,565 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:02:50,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:02:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-14 14:02:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-14 14:02:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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 14:02:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2022-07-14 14:02:50,567 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 7 [2022-07-14 14:02:50,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:02:50,568 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2022-07-14 14:02:50,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:02:50,568 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2022-07-14 14:02:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 14:02:50,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:02:50,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:02:50,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 14:02:50,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-07-14 14:02:50,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:02:50,569 INFO L85 PathProgramCache]: Analyzing trace with hash -997011972, now seen corresponding path program 1 times [2022-07-14 14:02:50,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:02:50,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686909771] [2022-07-14 14:02:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:02:50,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:02:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:02:50,600 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 14:02:50,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:02:50,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686909771] [2022-07-14 14:02:50,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686909771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:02:50,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:02:50,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:02:50,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439498791] [2022-07-14 14:02:50,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:02:50,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:02:50,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:02:50,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:02:50,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:02:50,602 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:02:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:02:50,621 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2022-07-14 14:02:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 14:02:50,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-07-14 14:02:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:02:50,622 INFO L225 Difference]: With dead ends: 14 [2022-07-14 14:02:50,622 INFO L226 Difference]: Without dead ends: 0 [2022-07-14 14:02:50,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:02:50,623 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:02:50,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:02:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-14 14:02:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-14 14:02:50,624 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 14:02:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 14:02:50,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-07-14 14:02:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:02:50,624 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:02:50,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 14:02:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-14 14:02:50,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-14 14:02:50,627 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2022-07-14 14:02:50,628 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2022-07-14 14:02:50,628 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-07-14 14:02:50,628 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-07-14 14:02:50,628 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-07-14 14:02:50,628 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-07-14 14:02:50,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-07-14 14:02:50,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-07-14 14:02:50,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 14:02:50,631 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-14 14:02:50,642 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-14 14:02:50,642 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 14:02:50,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 02:02:50 BasicIcfg [2022-07-14 14:02:50,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 14:02:50,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 14:02:50,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 14:02:50,645 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 14:02:50,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:02:48" (3/4) ... [2022-07-14 14:02:50,647 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-14 14:02:50,652 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-14 14:02:50,655 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-14 14:02:50,655 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-07-14 14:02:50,656 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-14 14:02:50,679 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 14:02:50,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 14:02:50,680 INFO L158 Benchmark]: Toolchain (without parser) took 3102.01ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 58.5MB in the beginning and 90.1MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:02:50,680 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:02:50,680 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.85ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 58.4MB in the beginning and 86.3MB in the end (delta: -28.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 14:02:50,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.15ms. Allocated memory is still 117.4MB. Free memory was 86.3MB in the beginning and 84.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:02:50,681 INFO L158 Benchmark]: Boogie Preprocessor took 36.28ms. Allocated memory is still 117.4MB. Free memory was 84.4MB in the beginning and 83.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:02:50,681 INFO L158 Benchmark]: RCFGBuilder took 281.43ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 73.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 14:02:50,681 INFO L158 Benchmark]: TraceAbstraction took 2305.55ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 92.3MB in the end (delta: -19.7MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2022-07-14 14:02:50,682 INFO L158 Benchmark]: Witness Printer took 34.19ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 90.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:02:50,683 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 92.3MB. Free memory is still 49.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.85ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 58.4MB in the beginning and 86.3MB in the end (delta: -28.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.15ms. Allocated memory is still 117.4MB. Free memory was 86.3MB in the beginning and 84.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.28ms. Allocated memory is still 117.4MB. Free memory was 84.4MB in the beginning and 83.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 281.43ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 73.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2305.55ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 92.3MB in the end (delta: -19.7MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Witness Printer took 34.19ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 90.1MB 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: 1.3s, 60 PlacesBefore, 22 PlacesAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 720 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 763 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 628, positive: 608, positive conditional: 0, positive unconditional: 608, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 491, positive: 479, positive conditional: 0, positive unconditional: 479, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 491, positive: 479, positive conditional: 0, positive unconditional: 479, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 628, positive: 129, positive conditional: 0, positive unconditional: 129, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 491, unknown conditional: 0, unknown unconditional: 491] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - 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: 681]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 681]: 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 4 procedures, 67 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 0 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 27, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-14 14:02:50,716 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