./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i --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_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/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 dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 ..................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:04:49,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:04:49,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:04:49,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:04:49,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:04:49,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:04:49,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:04:49,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:04:49,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:04:49,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:04:49,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:04:49,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:04:49,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:04:49,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:04:49,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:04:49,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:04:49,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:04:49,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:04:50,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:04:50,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:04:50,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:04:50,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:04:50,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:04:50,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:04:50,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:04:50,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:04:50,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:04:50,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:04:50,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:04:50,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:04:50,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:04:50,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:04:50,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:04:50,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:04:50,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:04:50,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:04:50,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:04:50,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:04:50,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:04:50,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:04:50,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:04:50,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:04:50,071 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:04:50,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:04:50,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:04:50,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:04:50,074 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:04:50,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:04:50,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:04:50,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:04:50,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:04:50,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:04:50,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:04:50,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:04:50,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:04:50,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:04:50,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:04:50,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:04:50,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:04:50,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:04:50,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:04:50,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:04:50,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:04:50,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:04:50,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:04:50,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:04:50,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:04:50,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:04:50,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:04:50,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:04:50,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:04:50,082 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_cf7399a7-a42b-494a-a692-576af4908b0d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 [2020-11-28 03:04:50,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:04:50,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:04:50,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:04:50,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:04:50,450 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:04:50,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-11-28 03:04:50,550 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/data/474658c18/dd9291ed79364cbbb227523e51c38996/FLAG166b04563 [2020-11-28 03:04:51,073 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:04:51,074 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-11-28 03:04:51,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/data/474658c18/dd9291ed79364cbbb227523e51c38996/FLAG166b04563 [2020-11-28 03:04:51,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/data/474658c18/dd9291ed79364cbbb227523e51c38996 [2020-11-28 03:04:51,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:04:51,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:04:51,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:51,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:04:51,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:04:51,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51819d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51, skipping insertion in model container [2020-11-28 03:04:51,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:04:51,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:04:51,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:51,681 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:04:51,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:51,715 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:04:51,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51 WrapperNode [2020-11-28 03:04:51,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:51,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:51,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:04:51,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:04:51,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:51,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:04:51,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:04:51,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:04:51,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... [2020-11-28 03:04:51,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:04:51,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:04:51,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:04:51,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:04:51,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/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 [2020-11-28 03:04:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:04:51,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:04:51,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:04:51,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:04:52,364 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:04:52,365 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:04:52,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:52 BoogieIcfgContainer [2020-11-28 03:04:52,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:04:52,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:04:52,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:04:52,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:04:52,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:04:51" (1/3) ... [2020-11-28 03:04:52,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bddc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:52, skipping insertion in model container [2020-11-28 03:04:52,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:51" (2/3) ... [2020-11-28 03:04:52,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bddc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:52, skipping insertion in model container [2020-11-28 03:04:52,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:52" (3/3) ... [2020-11-28 03:04:52,399 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2020-11-28 03:04:52,413 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:04:52,419 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:04:52,434 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:04:52,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:04:52,476 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:04:52,476 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:04:52,476 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:04:52,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:04:52,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:04:52,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:04:52,477 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:04:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 03:04:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:04:52,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:52,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:52,505 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:52,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:52,512 INFO L82 PathProgramCache]: Analyzing trace with hash 190924984, now seen corresponding path program 1 times [2020-11-28 03:04:52,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:52,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488077450] [2020-11-28 03:04:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:52,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488077450] [2020-11-28 03:04:52,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:52,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:04:52,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061116930] [2020-11-28 03:04:52,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:04:52,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:52,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:04:52,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:04:52,719 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 03:04:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:52,738 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2020-11-28 03:04:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:04:52,739 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:04:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:52,750 INFO L225 Difference]: With dead ends: 23 [2020-11-28 03:04:52,750 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 03:04:52,754 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 [2020-11-28 03:04:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 03:04:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 03:04:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 03:04:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-28 03:04:52,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2020-11-28 03:04:52,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:52,793 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-28 03:04:52,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:04:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-28 03:04:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:04:52,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:52,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:52,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:04:52,795 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash 181689774, now seen corresponding path program 1 times [2020-11-28 03:04:52,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:52,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080886211] [2020-11-28 03:04:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:52,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080886211] [2020-11-28 03:04:52,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:52,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:04:52,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542435119] [2020-11-28 03:04:52,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:52,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:52,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:52,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:52,957 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-11-28 03:04:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:53,001 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-11-28 03:04:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:53,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:04:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:53,002 INFO L225 Difference]: With dead ends: 16 [2020-11-28 03:04:53,003 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 03:04:53,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 03:04:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 03:04:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 03:04:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-28 03:04:53,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-11-28 03:04:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:53,008 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 03:04:53,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-28 03:04:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:04:53,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:53,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:53,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:04:53,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:53,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:53,014 INFO L82 PathProgramCache]: Analyzing trace with hash 70721163, now seen corresponding path program 1 times [2020-11-28 03:04:53,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:53,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723147993] [2020-11-28 03:04:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:53,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723147993] [2020-11-28 03:04:53,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277488818] [2020-11-28 03:04:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:04:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:53,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:04:53,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:53,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:04:53,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:04:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:53,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:04:53,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-11-28 03:04:53,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101598197] [2020-11-28 03:04:53,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:04:53,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:53,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:04:53,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:04:53,533 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 9 states. [2020-11-28 03:04:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:53,697 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-11-28 03:04:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:04:53,699 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-11-28 03:04:53,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:53,700 INFO L225 Difference]: With dead ends: 21 [2020-11-28 03:04:53,700 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 03:04:53,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:04:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 03:04:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-28 03:04:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:04:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-28 03:04:53,709 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2020-11-28 03:04:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:53,710 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-28 03:04:53,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:04:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-28 03:04:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:04:53,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:53,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:53,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:04:53,922 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:04:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:53,923 INFO L82 PathProgramCache]: Analyzing trace with hash 804068392, now seen corresponding path program 2 times [2020-11-28 03:04:53,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:53,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74953869] [2020-11-28 03:04:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:54,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74953869] [2020-11-28 03:04:54,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722261709] [2020-11-28 03:04:54,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:04:54,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:04:54,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:04:54,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:04:54,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:54,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:04:54,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:04:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:54,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:04:54,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-28 03:04:54,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699519598] [2020-11-28 03:04:54,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:04:54,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:54,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:04:54,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:04:54,274 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 11 states. [2020-11-28 03:04:54,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:54,421 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-11-28 03:04:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:04:54,421 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-11-28 03:04:54,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:54,422 INFO L225 Difference]: With dead ends: 16 [2020-11-28 03:04:54,422 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:04:54,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:04:54,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:04:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:04:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:04:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:04:54,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-28 03:04:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:54,424 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:54,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:04:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:04:54,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:04:54,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:04:54,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:04:54,676 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:04:54,676 INFO L277 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-11-28 03:04:54,676 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 03:04:54,676 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 03:04:54,677 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 03:04:54,677 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-28 03:04:54,677 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:04:54,677 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:04:54,677 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:04:54,677 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-28 03:04:54,677 INFO L270 CegarLoopResult]: At program point L26-2(lines 24 27) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~n~0) .cse0 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0)) (and .cse0 (<= (+ ULTIMATE.start_main_~y~0 1) ULTIMATE.start_main_~n~0)))) [2020-11-28 03:04:54,678 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-28 03:04:54,678 INFO L274 CegarLoopResult]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2020-11-28 03:04:54,678 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-28 03:04:54,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:04:54 BoogieIcfgContainer [2020-11-28 03:04:54,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:04:54,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:54,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:54,706 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:54,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:52" (3/4) ... [2020-11-28 03:04:54,711 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:04:54,722 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:04:54,723 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:04:54,723 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:04:54,724 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:04:54,781 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cf7399a7-a42b-494a-a692-576af4908b0d/bin/uautomizer/witness.graphml [2020-11-28 03:04:54,788 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:54,791 INFO L168 Benchmark]: Toolchain (without parser) took 3363.05 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 52.3 MB in the beginning and 61.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:54,791 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:54,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.98 ms. Allocated memory is still 81.8 MB. Free memory was 52.0 MB in the beginning and 59.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:54,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.30 ms. Allocated memory is still 81.8 MB. Free memory was 59.7 MB in the beginning and 58.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:54,797 INFO L168 Benchmark]: Boogie Preprocessor took 21.39 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 57.3 MB in the end (delta: 863.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:54,799 INFO L168 Benchmark]: RCFGBuilder took 570.39 ms. Allocated memory is still 81.8 MB. Free memory was 57.0 MB in the beginning and 46.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:54,800 INFO L168 Benchmark]: TraceAbstraction took 2326.64 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 45.5 MB in the beginning and 64.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:54,802 INFO L168 Benchmark]: Witness Printer took 82.01 ms. Allocated memory is still 104.9 MB. Free memory was 64.8 MB in the beginning and 61.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:54,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.98 ms. Allocated memory is still 81.8 MB. Free memory was 52.0 MB in the beginning and 59.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.30 ms. Allocated memory is still 81.8 MB. Free memory was 59.7 MB in the beginning and 58.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.39 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 57.3 MB in the end (delta: 863.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 570.39 ms. Allocated memory is still 81.8 MB. Free memory was 57.0 MB in the beginning and 46.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2326.64 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 45.5 MB in the beginning and 64.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Witness Printer took 82.01 ms. Allocated memory is still 104.9 MB. Free memory was 64.8 MB in the beginning and 61.5 MB in the end (delta: 3.3 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: 11]: 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((y <= n && x <= y) && y <= x) || (x <= y && y + 1 <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 11 SDslu, 31 SDs, 0 SdLazy, 74 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2118 SizeOfPredicates, 10 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 5/10 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...