./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark07_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c 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/loop-zilu/benchmark07_linear.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 2a73419fb64daa6d7ad78ec2e7248d3c39562a5784dfcea53eb2425fcf193a59 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:16:14,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:16:14,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:16:14,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:16:14,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:16:14,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:16:14,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:16:14,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:16:14,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:16:14,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:16:14,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:16:14,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:16:14,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:16:14,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:16:14,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:16:14,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:16:14,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:16:14,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:16:14,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:16:14,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:16:14,402 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:16:14,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:16:14,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:16:14,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:16:14,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:16:14,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:16:14,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:16:14,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:16:14,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:16:14,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:16:14,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:16:14,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:16:14,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:16:14,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:16:14,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:16:14,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:16:14,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:16:14,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:16:14,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:16:14,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:16:14,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:16:14,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:16:14,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:16:14,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:16:14,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:16:14,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:16:14,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:16:14,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:16:14,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:16:14,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:16:14,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:16:14,445 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:16:14,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:16:14,446 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:16:14,446 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:16:14,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:16:14,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:16:14,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:16:14,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:16:14,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:16:14,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:16:14,447 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:16:14,447 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:16:14,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:16:14,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:16:14,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:16:14,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:16:14,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:16:14,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:16:14,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:16:14,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:16:14,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:16:14,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:16:14,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:16:14,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:16:14,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:16:14,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a73419fb64daa6d7ad78ec2e7248d3c39562a5784dfcea53eb2425fcf193a59 [2022-07-13 02:16:14,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:16:14,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:16:14,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:16:14,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:16:14,676 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:16:14,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark07_linear.i [2022-07-13 02:16:14,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24917fdfe/8e446b44f1894f409e7116eccf26df04/FLAGf74779198 [2022-07-13 02:16:15,106 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:16:15,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark07_linear.i [2022-07-13 02:16:15,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24917fdfe/8e446b44f1894f409e7116eccf26df04/FLAGf74779198 [2022-07-13 02:16:15,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24917fdfe/8e446b44f1894f409e7116eccf26df04 [2022-07-13 02:16:15,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:16:15,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:16:15,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:16:15,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:16:15,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:16:15,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be6e0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15, skipping insertion in model container [2022-07-13 02:16:15,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:16:15,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:16:15,256 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark07_linear.i[868,881] [2022-07-13 02:16:15,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:16:15,278 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:16:15,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark07_linear.i[868,881] [2022-07-13 02:16:15,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:16:15,297 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:16:15,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15 WrapperNode [2022-07-13 02:16:15,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:16:15,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:16:15,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:16:15,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:16:15,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,319 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2022-07-13 02:16:15,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:16:15,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:16:15,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:16:15,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:16:15,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:16:15,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:16:15,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:16:15,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:16:15,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (1/1) ... [2022-07-13 02:16:15,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:16:15,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:16:15,371 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) [2022-07-13 02:16:15,399 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 [2022-07-13 02:16:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:16:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:16:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:16:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:16:15,455 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:16:15,456 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:16:15,547 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:16:15,551 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:16:15,555 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 02:16:15,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:16:15 BoogieIcfgContainer [2022-07-13 02:16:15,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:16:15,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:16:15,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:16:15,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:16:15,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:16:15" (1/3) ... [2022-07-13 02:16:15,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f8747a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:16:15, skipping insertion in model container [2022-07-13 02:16:15,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:16:15" (2/3) ... [2022-07-13 02:16:15,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f8747a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:16:15, skipping insertion in model container [2022-07-13 02:16:15,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:16:15" (3/3) ... [2022-07-13 02:16:15,563 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark07_linear.i [2022-07-13 02:16:15,573 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:16:15,573 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-13 02:16:15,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:16:15,619 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@77820eb4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@589c49bd [2022-07-13 02:16:15,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 02:16:15,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.6875) internal successors, (27), 22 states have internal predecessors, (27), 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) [2022-07-13 02:16:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 02:16:15,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:16:15,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 02:16:15,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:16:15,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:16:15,646 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2022-07-13 02:16:15,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:16:15,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069785040] [2022-07-13 02:16:15,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:16:15,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:16:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:16:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:16:15,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:16:15,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069785040] [2022-07-13 02:16:15,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069785040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:16:15,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:16:15,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:16:15,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335761531] [2022-07-13 02:16:15,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:16:15,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:16:15,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:16:15,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:16:15,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:16:15,796 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.6875) internal successors, (27), 22 states have internal predecessors, (27), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:16:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:16:15,842 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-07-13 02:16:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:16:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-13 02:16:15,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:16:15,849 INFO L225 Difference]: With dead ends: 40 [2022-07-13 02:16:15,849 INFO L226 Difference]: Without dead ends: 20 [2022-07-13 02:16:15,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:16:15,853 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:16:15,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 58 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:16:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-13 02:16:15,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-13 02:16:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 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) [2022-07-13 02:16:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-07-13 02:16:15,873 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 5 [2022-07-13 02:16:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:16:15,873 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-07-13 02:16:15,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:16:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-07-13 02:16:15,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 02:16:15,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:16:15,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:16:15,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:16:15,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:16:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:16:15,875 INFO L85 PathProgramCache]: Analyzing trace with hash 183289487, now seen corresponding path program 1 times [2022-07-13 02:16:15,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:16:15,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179783006] [2022-07-13 02:16:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:16:15,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:16:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:16:15,889 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 02:16:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 02:16:15,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 02:16:15,908 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 02:16:15,909 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-07-13 02:16:15,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-07-13 02:16:15,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-07-13 02:16:15,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-07-13 02:16:15,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-07-13 02:16:15,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-07-13 02:16:15,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:16:15,919 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 02:16:15,922 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 02:16:15,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:16:15 BoogieIcfgContainer [2022-07-13 02:16:15,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 02:16:15,947 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 02:16:15,947 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 02:16:15,948 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 02:16:15,948 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:16:15" (3/4) ... [2022-07-13 02:16:15,949 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 02:16:15,973 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 02:16:15,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 02:16:15,974 INFO L158 Benchmark]: Toolchain (without parser) took 848.75ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 50.7MB in the beginning and 71.9MB in the end (delta: -21.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-13 02:16:15,974 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 42.3MB in the beginning and 42.2MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 02:16:15,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.12ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 50.5MB in the beginning and 80.2MB in the end (delta: -29.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 02:16:15,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.70ms. Allocated memory is still 104.9MB. Free memory was 80.2MB in the beginning and 78.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 02:16:15,975 INFO L158 Benchmark]: Boogie Preprocessor took 26.05ms. Allocated memory is still 104.9MB. Free memory was 78.8MB in the beginning and 77.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 02:16:15,977 INFO L158 Benchmark]: RCFGBuilder took 209.76ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 68.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 02:16:15,977 INFO L158 Benchmark]: TraceAbstraction took 387.04ms. Allocated memory is still 104.9MB. Free memory was 68.0MB in the beginning and 73.4MB in the end (delta: -5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 02:16:15,978 INFO L158 Benchmark]: Witness Printer took 26.09ms. Allocated memory is still 104.9MB. Free memory was 73.4MB in the beginning and 71.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 02:16:15,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 42.3MB in the beginning and 42.2MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.12ms. Allocated memory was 79.7MB in the beginning and 104.9MB in the end (delta: 25.2MB). Free memory was 50.5MB in the beginning and 80.2MB in the end (delta: -29.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.70ms. Allocated memory is still 104.9MB. Free memory was 80.2MB in the beginning and 78.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.05ms. Allocated memory is still 104.9MB. Free memory was 78.8MB in the beginning and 77.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 209.76ms. Allocated memory is still 104.9MB. Free memory was 77.6MB in the beginning and 68.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 387.04ms. Allocated memory is still 104.9MB. Free memory was 68.0MB in the beginning and 73.4MB in the end (delta: -5.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 26.09ms. Allocated memory is still 104.9MB. Free memory was 73.4MB in the beginning and 71.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] int n = __VERIFIER_nondet_int(); [L22] int k = __VERIFIER_nondet_int(); [L23] _Bool flag = __VERIFIER_nondet_bool(); [L24] i=0 VAL [i=0, k=2147479648, n=1] [L25] COND FALSE !(!(n>0 && n<10)) VAL [i=0, k=2147479648, n=1] [L26] COND TRUE i