./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/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 a6ea3567a534d80cc2c4496700797b4364bacf8f ...................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 16:05:01,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:05:01,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:05:01,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:05:01,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:05:01,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:05:01,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:05:01,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:05:01,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:05:01,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:05:01,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:05:01,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:05:01,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:05:01,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:05:01,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:05:01,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:05:01,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:05:01,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:05:01,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:05:01,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:05:01,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:05:01,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:05:01,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:05:01,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:05:01,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:05:01,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:05:01,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:05:01,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:05:01,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:05:01,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:05:01,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:05:01,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:05:01,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:05:01,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:05:01,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:05:01,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:05:01,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:05:01,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:05:01,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:05:01,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:05:01,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:05:01,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 16:05:01,926 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:05:01,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:05:01,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:05:01,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:05:01,929 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 16:05:01,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:05:01,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:05:01,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:05:01,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:05:01,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:05:01,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:05:01,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:05:01,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:05:01,933 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:05:01,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:05:01,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:05:01,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:05:01,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:05:01,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 16:05:01,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:05:01,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 16:05:01,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:05:01,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:05:01,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:05:01,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:05:01,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 16:05:01,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:05:01,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:05:01,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 16:05:01,937 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_327c61bd-d551-4e13-b722-1c5d5c12c283/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6ea3567a534d80cc2c4496700797b4364bacf8f [2020-12-01 16:05:02,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:05:02,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:05:02,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:05:02,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:05:02,289 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:05:02,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/nest-if3.i [2020-12-01 16:05:02,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/data/ce295e896/bab7a652aac94768b5484ea6fd3fb4c3/FLAGdc9b787a6 [2020-12-01 16:05:03,074 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:05:03,075 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/sv-benchmarks/c/loop-invgen/nest-if3.i [2020-12-01 16:05:03,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/data/ce295e896/bab7a652aac94768b5484ea6fd3fb4c3/FLAGdc9b787a6 [2020-12-01 16:05:03,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/data/ce295e896/bab7a652aac94768b5484ea6fd3fb4c3 [2020-12-01 16:05:03,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:05:03,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:05:03,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:05:03,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:05:03,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:05:03,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e78090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03, skipping insertion in model container [2020-12-01 16:05:03,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:05:03,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:05:03,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:05:03,691 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:05:03,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:05:03,722 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:05:03,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03 WrapperNode [2020-12-01 16:05:03,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:05:03,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:05:03,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:05:03,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:05:03,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:05:03,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:05:03,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:05:03,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:05:03,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... [2020-12-01 16:05:03,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:05:03,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:05:03,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:05:03,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:05:03,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/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 [2020-12-01 16:05:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:05:03,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:05:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:05:03,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:05:04,304 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:05:04,305 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 16:05:04,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:05:04 BoogieIcfgContainer [2020-12-01 16:05:04,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:05:04,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 16:05:04,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 16:05:04,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 16:05:04,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:05:03" (1/3) ... [2020-12-01 16:05:04,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4169a80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:05:04, skipping insertion in model container [2020-12-01 16:05:04,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:03" (2/3) ... [2020-12-01 16:05:04,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4169a80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:05:04, skipping insertion in model container [2020-12-01 16:05:04,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:05:04" (3/3) ... [2020-12-01 16:05:04,318 INFO L111 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2020-12-01 16:05:04,333 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 16:05:04,337 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 16:05:04,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 16:05:04,376 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 16:05:04,376 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 16:05:04,376 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 16:05:04,377 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 16:05:04,377 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 16:05:04,377 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 16:05:04,377 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 16:05:04,378 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 16:05:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-01 16:05:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 16:05:04,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:04,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:04,398 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:05:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:04,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1937327372, now seen corresponding path program 1 times [2020-12-01 16:05:04,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:04,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467990739] [2020-12-01 16:05:04,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:04,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467990739] [2020-12-01 16:05:04,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:04,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 16:05:04,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731474454] [2020-12-01 16:05:04,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 16:05:04,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:04,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 16:05:04,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:05:04,682 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-12-01 16:05:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:04,863 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-12-01 16:05:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 16:05:04,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-01 16:05:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:04,872 INFO L225 Difference]: With dead ends: 45 [2020-12-01 16:05:04,873 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 16:05:04,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 16:05:04,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 16:05:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 16:05:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 16:05:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 16:05:04,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-01 16:05:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:04,903 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 16:05:04,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 16:05:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 16:05:04,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 16:05:04,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 16:05:04,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 16:05:04,951 INFO L262 CegarLoopResult]: For program point L31-2(lines 31 37) no Hoare annotation was computed. [2020-12-01 16:05:04,952 INFO L258 CegarLoopResult]: At program point L31-3(lines 31 37) the Hoare annotation is: (<= 1 ULTIMATE.start_main_~l~0) [2020-12-01 16:05:04,952 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-01 16:05:04,952 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 16:05:04,953 INFO L258 CegarLoopResult]: At program point L32-2(lines 32 34) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~l~0) (<= 1 ULTIMATE.start_main_~i~0)) [2020-12-01 16:05:04,953 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 16:05:04,953 INFO L262 CegarLoopResult]: For program point L32-3(lines 32 34) no Hoare annotation was computed. [2020-12-01 16:05:04,954 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 16:05:04,954 INFO L262 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-12-01 16:05:04,954 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-01 16:05:04,955 INFO L265 CegarLoopResult]: At program point L24(lines 24 38) the Hoare annotation is: true [2020-12-01 16:05:04,955 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-01 16:05:04,955 INFO L262 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-12-01 16:05:04,955 INFO L262 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-12-01 16:05:04,955 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 16:05:04,956 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-12-01 16:05:04,956 INFO L262 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-12-01 16:05:04,956 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-01 16:05:04,956 INFO L258 CegarLoopResult]: At program point L18-2(lines 1 38) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0) (<= 1 ULTIMATE.start_main_~i~0)) [2020-12-01 16:05:04,957 INFO L262 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2020-12-01 16:05:04,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:05:04 BoogieIcfgContainer [2020-12-01 16:05:04,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 16:05:04,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:05:04,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:05:04,980 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:05:04,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:05:04" (3/4) ... [2020-12-01 16:05:04,985 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 16:05:04,996 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-01 16:05:04,997 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 16:05:04,997 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 16:05:04,998 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 16:05:05,045 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_327c61bd-d551-4e13-b722-1c5d5c12c283/bin/uautomizer/witness.graphml [2020-12-01 16:05:05,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:05:05,047 INFO L168 Benchmark]: Toolchain (without parser) took 1646.29 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 57.7 MB in the beginning and 70.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:05:05,048 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:05:05,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.11 ms. Allocated memory is still 88.1 MB. Free memory was 57.4 MB in the beginning and 65.5 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:05:05,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.37 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:05:05,050 INFO L168 Benchmark]: Boogie Preprocessor took 50.55 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 63.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:05:05,050 INFO L168 Benchmark]: RCFGBuilder took 493.64 ms. Allocated memory is still 88.1 MB. Free memory was 63.1 MB in the beginning and 50.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:05:05,051 INFO L168 Benchmark]: TraceAbstraction took 668.50 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.2 MB in the beginning and 73.4 MB in the end (delta: -23.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:05:05,051 INFO L168 Benchmark]: Witness Printer took 65.72 ms. Allocated memory is still 107.0 MB. Free memory was 73.4 MB in the beginning and 70.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 16:05:05,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.11 ms. Allocated memory is still 88.1 MB. Free memory was 57.4 MB in the beginning and 65.5 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.37 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 64.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.55 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 63.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 493.64 ms. Allocated memory is still 88.1 MB. Free memory was 63.1 MB in the beginning and 50.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 668.50 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.2 MB in the beginning and 73.4 MB in the end (delta: -23.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 65.72 ms. Allocated memory is still 107.0 MB. Free memory was 73.4 MB in the beginning and 70.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (!(0 == cond) && 1 <= l) && 1 <= i - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 <= l - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 <= l && 1 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 29 SDslu, 30 SDs, 0 SdLazy, 24 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 22 HoareAnnotationTreeSize, 4 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 210 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 correct! Received shutdown request...