./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark27_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark27_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer --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 d74be85e157db5a333b620e4febf366c094179ee ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:28:55,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:28:55,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:28:55,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:28:55,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:28:55,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:28:55,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:28:55,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:28:55,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:28:55,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:28:55,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:28:55,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:28:55,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:28:55,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:28:55,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:28:55,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:28:55,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:28:55,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:28:55,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:28:55,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:28:55,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:28:55,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:28:55,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:28:55,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:28:55,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:28:55,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:28:55,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:28:55,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:28:55,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:28:55,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:28:55,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:28:55,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:28:55,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:28:55,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:28:55,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:28:55,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:28:55,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:28:55,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:28:55,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:28:55,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:28:55,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:28:55,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-29 19:28:55,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:28:55,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:28:55,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:28:55,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:28:55,419 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:28:55,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:28:55,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:28:55,420 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:28:55,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:28:55,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:28:55,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:28:55,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:28:55,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:28:55,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:28:55,421 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 19:28:55,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:28:55,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:28:55,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:28:55,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:28:55,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:28:55,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:28:55,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:28:55,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:28:55,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:28:55,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:28:55,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:28:55,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:28:55,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:28:55,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:28:55,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:28:55,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:28:55,428 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:/tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d74be85e157db5a333b620e4febf366c094179ee [2020-11-29 19:28:55,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:28:55,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:28:55,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:28:55,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:28:55,783 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:28:55,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark27_linear.i [2020-11-29 19:28:55,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/data/8cac0cd53/709ad9cd09db4362b557a941c93b0c3e/FLAGb8431f2f1 [2020-11-29 19:28:56,411 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:28:56,411 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/sv-benchmarks/c/loop-zilu/benchmark27_linear.i [2020-11-29 19:28:56,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/data/8cac0cd53/709ad9cd09db4362b557a941c93b0c3e/FLAGb8431f2f1 [2020-11-29 19:28:56,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/data/8cac0cd53/709ad9cd09db4362b557a941c93b0c3e [2020-11-29 19:28:56,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:28:56,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:28:56,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:28:56,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:28:56,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:28:56,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:28:56" (1/1) ... [2020-11-29 19:28:56,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a88ed15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:56, skipping insertion in model container [2020-11-29 19:28:56,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:28:56" (1/1) ... [2020-11-29 19:28:56,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:28:56,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:28:56,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:28:56,987 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:28:57,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:28:57,027 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:28:57,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57 WrapperNode [2020-11-29 19:28:57,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:28:57,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:28:57,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:28:57,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:28:57,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... [2020-11-29 19:28:57,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... [2020-11-29 19:28:57,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:28:57,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:28:57,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:28:57,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:28:57,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... [2020-11-29 19:28:57,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... [2020-11-29 19:28:57,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... [2020-11-29 19:28:57,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... [2020-11-29 19:28:57,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... [2020-11-29 19:28:57,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... [2020-11-29 19:28:57,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... [2020-11-29 19:28:57,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:28:57,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:28:57,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:28:57,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:28:57,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:28:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:28:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:28:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:28:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:28:57,638 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:28:57,638 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 19:28:57,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:28:57 BoogieIcfgContainer [2020-11-29 19:28:57,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:28:57,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:28:57,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:28:57,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:28:57,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:28:56" (1/3) ... [2020-11-29 19:28:57,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed31e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:28:57, skipping insertion in model container [2020-11-29 19:28:57,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:28:57" (2/3) ... [2020-11-29 19:28:57,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed31e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:28:57, skipping insertion in model container [2020-11-29 19:28:57,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:28:57" (3/3) ... [2020-11-29 19:28:57,680 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark27_linear.i [2020-11-29 19:28:57,706 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:28:57,730 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 19:28:57,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 19:28:57,779 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:28:57,779 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:28:57,779 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:28:57,779 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:28:57,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:28:57,780 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:28:57,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:28:57,780 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:28:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-29 19:28:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 19:28:57,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:28:57,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 19:28:57,815 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:28:57,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:28:57,822 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-29 19:28:57,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:28:57,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132633464] [2020-11-29 19:28:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:28:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:28:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:28:58,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132633464] [2020-11-29 19:28:58,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:28:58,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:28:58,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771314419] [2020-11-29 19:28:58,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:28:58,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:28:58,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:28:58,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:28:58,100 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-11-29 19:28:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:28:58,194 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-11-29 19:28:58,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:28:58,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-29 19:28:58,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:28:58,213 INFO L225 Difference]: With dead ends: 36 [2020-11-29 19:28:58,214 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 19:28:58,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:28:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 19:28:58,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-11-29 19:28:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 19:28:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-29 19:28:58,259 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2020-11-29 19:28:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:28:58,261 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-29 19:28:58,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:28:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-29 19:28:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 19:28:58,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:28:58,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 19:28:58,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:28:58,266 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:28:58,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:28:58,271 INFO L82 PathProgramCache]: Analyzing trace with hash 28693763, now seen corresponding path program 1 times [2020-11-29 19:28:58,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:28:58,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327618071] [2020-11-29 19:28:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:28:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:28:58,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:28:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:28:58,328 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:28:58,346 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:28:58,347 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:28:58,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:28:58,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:28:58 BoogieIcfgContainer [2020-11-29 19:28:58,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:28:58,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:28:58,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:28:58,396 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:28:58,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:28:57" (3/4) ... [2020-11-29 19:28:58,420 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:28:58,472 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_305a1136-716b-410e-b1b2-59572e9a44ea/bin/uautomizer/witness.graphml [2020-11-29 19:28:58,473 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:28:58,475 INFO L168 Benchmark]: Toolchain (without parser) took 1735.62 ms. Allocated memory was 81.8 MB in the beginning and 113.2 MB in the end (delta: 31.5 MB). Free memory was 47.1 MB in the beginning and 90.4 MB in the end (delta: -43.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:28:58,475 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 46.8 MB in the beginning and 46.7 MB in the end (delta: 117.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:28:58,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.38 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 37.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:28:58,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.27 ms. Allocated memory is still 81.8 MB. Free memory was 37.6 MB in the beginning and 36.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:28:58,478 INFO L168 Benchmark]: Boogie Preprocessor took 63.70 ms. Allocated memory was 81.8 MB in the beginning and 113.2 MB in the end (delta: 31.5 MB). Free memory was 36.1 MB in the beginning and 93.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:28:58,479 INFO L168 Benchmark]: RCFGBuilder took 496.41 ms. Allocated memory is still 113.2 MB. Free memory was 93.0 MB in the beginning and 80.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:28:58,480 INFO L168 Benchmark]: TraceAbstraction took 732.65 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 91.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:28:58,480 INFO L168 Benchmark]: Witness Printer took 77.41 ms. Allocated memory is still 113.2 MB. Free memory was 91.8 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:28:58,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 46.8 MB in the beginning and 46.7 MB in the end (delta: 117.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.38 ms. Allocated memory is still 81.8 MB. Free memory was 47.0 MB in the beginning and 37.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.27 ms. Allocated memory is still 81.8 MB. Free memory was 37.6 MB in the beginning and 36.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.70 ms. Allocated memory was 81.8 MB in the beginning and 113.2 MB in the end (delta: 31.5 MB). Free memory was 36.1 MB in the beginning and 93.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 496.41 ms. Allocated memory is still 113.2 MB. Free memory was 93.0 MB in the beginning and 80.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 732.65 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 91.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Witness Printer took 77.41 ms. Allocated memory is still 113.2 MB. Free memory was 91.8 MB in the beginning and 90.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] int j = __VERIFIER_nondet_int(); [L22] int k = __VERIFIER_nondet_int(); [L23] ii-j [L23] i-j - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 30 SDslu, 7 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, 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, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...