./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ms3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ms3f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d41fc8f45d6677615383aa59c803c310c6c67fce ................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:15:24,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:15:24,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:15:24,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:15:24,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:15:24,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:15:24,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:15:24,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:15:24,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:15:24,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:15:24,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:15:24,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:15:24,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:15:24,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:15:24,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:15:24,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:15:24,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:15:24,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:15:24,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:15:24,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:15:24,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:15:24,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:15:24,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:15:24,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:15:24,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:15:24,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:15:24,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:15:24,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:15:24,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:15:24,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:15:24,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:15:24,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:15:24,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:15:24,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:15:24,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:15:24,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:15:24,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:15:24,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:15:24,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:15:24,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:15:24,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:15:24,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:15:24,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:15:24,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:15:24,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:15:24,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:15:24,662 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:15:24,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:15:24,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:15:24,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:15:24,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:15:24,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:15:24,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:15:24,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:15:24,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:15:24,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:15:24,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:15:24,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:15:24,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:15:24,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:15:24,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:15:24,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:15:24,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:15:24,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:15:24,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:15:24,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:15:24,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:15:24,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:15:24,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:15:24,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:15:24,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:15:24,668 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_44dc3b3c-e6aa-4528-a0c0-47624dff432d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d41fc8f45d6677615383aa59c803c310c6c67fce [2020-11-29 21:15:24,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:15:25,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:15:25,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:15:25,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:15:25,015 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:15:25,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/../../sv-benchmarks/c/array-fpi/ms3f.c [2020-11-29 21:15:25,095 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/data/8a9dd35ac/84b3408ba6cb40f2a89ef4b6f71c9e3c/FLAGbf73b6d22 [2020-11-29 21:15:25,696 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:15:25,697 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/sv-benchmarks/c/array-fpi/ms3f.c [2020-11-29 21:15:25,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/data/8a9dd35ac/84b3408ba6cb40f2a89ef4b6f71c9e3c/FLAGbf73b6d22 [2020-11-29 21:15:26,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/data/8a9dd35ac/84b3408ba6cb40f2a89ef4b6f71c9e3c [2020-11-29 21:15:26,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:15:26,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:15:26,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:15:26,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:15:26,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:15:26,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e57b64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26, skipping insertion in model container [2020-11-29 21:15:26,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:15:26,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:15:26,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:15:26,366 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:15:26,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:15:26,426 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:15:26,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26 WrapperNode [2020-11-29 21:15:26,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:15:26,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:15:26,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:15:26,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:15:26,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:15:26,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:15:26,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:15:26,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:15:26,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... [2020-11-29 21:15:26,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:15:26,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:15:26,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:15:26,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:15:26,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/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 21:15:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:15:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:15:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:15:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 21:15:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:15:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:15:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:15:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:15:27,060 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:15:27,061 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 21:15:27,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:15:27 BoogieIcfgContainer [2020-11-29 21:15:27,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:15:27,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:15:27,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:15:27,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:15:27,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:15:26" (1/3) ... [2020-11-29 21:15:27,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0b489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:15:27, skipping insertion in model container [2020-11-29 21:15:27,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:15:26" (2/3) ... [2020-11-29 21:15:27,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0b489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:15:27, skipping insertion in model container [2020-11-29 21:15:27,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:15:27" (3/3) ... [2020-11-29 21:15:27,074 INFO L111 eAbstractionObserver]: Analyzing ICFG ms3f.c [2020-11-29 21:15:27,086 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:15:27,091 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 21:15:27,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 21:15:27,140 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:15:27,140 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:15:27,140 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:15:27,140 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:15:27,140 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:15:27,141 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:15:27,141 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:15:27,141 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:15:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-29 21:15:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:15:27,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:15:27,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:15:27,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:15:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:15:27,173 INFO L82 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2020-11-29 21:15:27,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:15:27,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373069919] [2020-11-29 21:15:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:15:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:15:27,393 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 21:15:27,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373069919] [2020-11-29 21:15:27,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:15:27,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:15:27,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100372310] [2020-11-29 21:15:27,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:15:27,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:15:27,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:15:27,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:15:27,422 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-11-29 21:15:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:15:27,441 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-29 21:15:27,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:15:27,442 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 21:15:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:15:27,452 INFO L225 Difference]: With dead ends: 35 [2020-11-29 21:15:27,452 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 21:15:27,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:15:27,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 21:15:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 21:15:27,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 21:15:27,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-29 21:15:27,540 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2020-11-29 21:15:27,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:15:27,541 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-29 21:15:27,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:15:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-29 21:15:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:15:27,543 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:15:27,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:15:27,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:15:27,544 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:15:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:15:27,547 INFO L82 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2020-11-29 21:15:27,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:15:27,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833920368] [2020-11-29 21:15:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:15:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:15:27,675 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 21:15:27,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833920368] [2020-11-29 21:15:27,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:15:27,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:15:27,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126137276] [2020-11-29 21:15:27,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:15:27,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:15:27,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:15:27,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:15:27,679 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2020-11-29 21:15:27,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:15:27,809 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-11-29 21:15:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:15:27,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 21:15:27,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:15:27,811 INFO L225 Difference]: With dead ends: 28 [2020-11-29 21:15:27,811 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 21:15:27,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:15:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 21:15:27,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-11-29 21:15:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 21:15:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-29 21:15:27,818 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2020-11-29 21:15:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:15:27,819 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-29 21:15:27,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:15:27,820 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-29 21:15:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 21:15:27,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:15:27,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:15:27,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:15:27,822 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:15:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:15:27,823 INFO L82 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2020-11-29 21:15:27,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:15:27,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741645145] [2020-11-29 21:15:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:15:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:15:27,912 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:15:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:15:27,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:15:28,024 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:15:28,026 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 21:15:28,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:15:28,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:15:28 BoogieIcfgContainer [2020-11-29 21:15:28,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:15:28,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:15:28,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:15:28,083 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:15:28,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:15:27" (3/4) ... [2020-11-29 21:15:28,086 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 21:15:28,159 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_44dc3b3c-e6aa-4528-a0c0-47624dff432d/bin/uautomizer/witness.graphml [2020-11-29 21:15:28,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:15:28,162 INFO L168 Benchmark]: Toolchain (without parser) took 2088.67 ms. Allocated memory is still 115.3 MB. Free memory was 87.6 MB in the beginning and 72.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-11-29 21:15:28,163 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:15:28,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.23 ms. Allocated memory is still 115.3 MB. Free memory was 87.2 MB in the beginning and 93.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:15:28,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.53 ms. Allocated memory is still 115.3 MB. Free memory was 92.7 MB in the beginning and 91.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:15:28,169 INFO L168 Benchmark]: Boogie Preprocessor took 36.41 ms. Allocated memory is still 115.3 MB. Free memory was 91.4 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:15:28,170 INFO L168 Benchmark]: RCFGBuilder took 533.31 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 75.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:15:28,170 INFO L168 Benchmark]: TraceAbstraction took 1016.11 ms. Allocated memory is still 115.3 MB. Free memory was 75.5 MB in the beginning and 75.0 MB in the end (delta: 461.0 kB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-11-29 21:15:28,171 INFO L168 Benchmark]: Witness Printer took 77.74 ms. Allocated memory is still 115.3 MB. Free memory was 75.0 MB in the beginning and 72.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:15:28,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.23 ms. Allocated memory is still 115.3 MB. Free memory was 87.2 MB in the beginning and 93.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.53 ms. Allocated memory is still 115.3 MB. Free memory was 92.7 MB in the beginning and 91.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.41 ms. Allocated memory is still 115.3 MB. Free memory was 91.4 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 533.31 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 75.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1016.11 ms. Allocated memory is still 115.3 MB. Free memory was 75.5 MB in the beginning and 75.0 MB in the end (delta: 461.0 kB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. * Witness Printer took 77.74 ms. Allocated memory is still 115.3 MB. Free memory was 75.0 MB in the beginning and 72.3 MB in the end (delta: 2.7 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: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [N=1] [L31] COND TRUE i