./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 950600dbb36b2cdf644bab2e11db14741ba73676 ................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:38:35,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:35,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:35,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:35,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:35,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:35,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:35,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:35,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:35,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:35,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:35,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:35,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:35,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:35,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:35,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:35,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:35,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:35,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:35,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:35,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:35,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:35,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:35,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:35,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:35,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:35,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:35,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:35,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:35,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:35,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:35,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:35,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:35,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:35,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:35,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:35,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:35,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:35,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:35,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:35,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:35,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-28 07:38:36,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:36,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:36,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:36,007 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:36,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:36,008 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:36,008 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:36,008 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:36,008 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:36,009 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:36,009 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:36,010 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:36,010 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:36,010 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:36,010 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:36,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:36,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:36,011 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:38:36,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:36,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:36,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:36,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:36,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:36,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:36,013 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:38:36,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:36,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:36,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:36,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:36,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:36,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:36,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:36,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:36,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:36,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:36,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:36,015 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:36,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:36,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:36,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:36,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:36,016 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950600dbb36b2cdf644bab2e11db14741ba73676 [2020-11-28 07:38:36,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:36,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:36,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:36,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:36,373 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:36,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2020-11-28 07:38:36,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/data/5d8e2f91d/27e8abe7ec3a4818b2f9db8764a0641e/FLAGcd8581dbd [2020-11-28 07:38:36,994 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:36,994 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/sv-benchmarks/c/loop-zilu/benchmark09_conjunctive.i [2020-11-28 07:38:37,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/data/5d8e2f91d/27e8abe7ec3a4818b2f9db8764a0641e/FLAGcd8581dbd [2020-11-28 07:38:37,362 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/data/5d8e2f91d/27e8abe7ec3a4818b2f9db8764a0641e [2020-11-28 07:38:37,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:37,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:37,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:37,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:37,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:37,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428e1464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37, skipping insertion in model container [2020-11-28 07:38:37,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:37,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:37,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:37,608 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:37,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:37,640 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:37,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37 WrapperNode [2020-11-28 07:38:37,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:37,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:37,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:37,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:37,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:37,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:37,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:37,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:37,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... [2020-11-28 07:38:37,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:37,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:37,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:37,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:37,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/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 07:38:37,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:38:37,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:38,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:38,352 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:38:38,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:38 BoogieIcfgContainer [2020-11-28 07:38:38,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:38,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:38,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:38,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:38,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:37" (1/3) ... [2020-11-28 07:38:38,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e34be6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:38, skipping insertion in model container [2020-11-28 07:38:38,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:37" (2/3) ... [2020-11-28 07:38:38,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e34be6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:38, skipping insertion in model container [2020-11-28 07:38:38,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:38" (3/3) ... [2020-11-28 07:38:38,366 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark09_conjunctive.i [2020-11-28 07:38:38,377 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:38,383 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:38:38,395 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:38:38,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:38,433 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:38,433 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:38,433 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:38,433 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:38,433 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:38,434 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:38,434 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-28 07:38:38,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:38:38,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:38,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:38:38,459 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:38:38,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:38,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2420311, now seen corresponding path program 1 times [2020-11-28 07:38:38,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:38,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379229181] [2020-11-28 07:38:38,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:38,673 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 07:38:38,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379229181] [2020-11-28 07:38:38,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:38,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:38,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914564552] [2020-11-28 07:38:38,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:38,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:38,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:38,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:38,700 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-11-28 07:38:38,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:38,789 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-28 07:38:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:38,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:38:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:38,806 INFO L225 Difference]: With dead ends: 15 [2020-11-28 07:38:38,806 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:38:38,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:38:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:38:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:38:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 07:38:38,849 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2020-11-28 07:38:38,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:38,849 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 07:38:38,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 07:38:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:38:38,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:38,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:38:38,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:38:38,850 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:38:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:38,851 INFO L82 PathProgramCache]: Analyzing trace with hash 75029691, now seen corresponding path program 1 times [2020-11-28 07:38:38,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:38,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697235333] [2020-11-28 07:38:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:38,940 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 07:38:38,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697235333] [2020-11-28 07:38:38,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:38,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:38:38,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939873957] [2020-11-28 07:38:38,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:38,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:38,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:38,944 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2020-11-28 07:38:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:38,966 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-28 07:38:38,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:38,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:38:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:38,967 INFO L225 Difference]: With dead ends: 11 [2020-11-28 07:38:38,967 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:38:38,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:38,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:38:38,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 07:38:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 07:38:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-28 07:38:38,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2020-11-28 07:38:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:38,971 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-28 07:38:38,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-28 07:38:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:38:38,972 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:38,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:38:38,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:38:38,972 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:38:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1969046823, now seen corresponding path program 1 times [2020-11-28 07:38:38,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:38,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026430761] [2020-11-28 07:38:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:39,012 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 07:38:39,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026430761] [2020-11-28 07:38:39,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:39,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:38:39,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283511731] [2020-11-28 07:38:39,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:39,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:39,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:39,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:39,014 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2020-11-28 07:38:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:39,045 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-28 07:38:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:39,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:38:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:39,046 INFO L225 Difference]: With dead ends: 10 [2020-11-28 07:38:39,046 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 07:38:39,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 07:38:39,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 07:38:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:38:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 07:38:39,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2020-11-28 07:38:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:39,049 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 07:38:39,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:39,050 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 07:38:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:38:39,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:39,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:39,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:38:39,051 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:38:39,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash -910909315, now seen corresponding path program 1 times [2020-11-28 07:38:39,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:39,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158096659] [2020-11-28 07:38:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:39,115 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 07:38:39,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158096659] [2020-11-28 07:38:39,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:39,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:38:39,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569278024] [2020-11-28 07:38:39,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:38:39,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:39,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:38:39,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:38:39,117 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-28 07:38:39,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:39,149 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-28 07:38:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:38:39,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:38:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:39,150 INFO L225 Difference]: With dead ends: 9 [2020-11-28 07:38:39,151 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:38:39,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:39,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:38:39,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:38:39,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:38:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:38:39,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-28 07:38:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:39,152 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:38:39,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:38:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:38:39,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:38:39,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:38:39,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:38:39,202 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-28 07:38:39,202 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:38:39,202 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 07:38:39,203 INFO L270 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-28 07:38:39,203 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-28 07:38:39,203 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-28 07:38:39,203 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-11-28 07:38:39,203 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2020-11-28 07:38:39,204 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-28 07:38:39,204 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 07:38:39,204 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:38:39,204 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-28 07:38:39,204 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-28 07:38:39,204 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-28 07:38:39,204 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-28 07:38:39,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:39 BoogieIcfgContainer [2020-11-28 07:38:39,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:39,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:39,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:39,230 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:39,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:38" (3/4) ... [2020-11-28 07:38:39,234 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:38:39,245 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 07:38:39,245 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:38:39,245 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:38:39,246 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:38:39,310 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_799883a4-c155-493f-9b0e-17bbb931831b/bin/utaipan/witness.graphml [2020-11-28 07:38:39,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:39,312 INFO L168 Benchmark]: Toolchain (without parser) took 1945.30 ms. Allocated memory is still 125.8 MB. Free memory was 97.9 MB in the beginning and 80.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:39,313 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:39,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.53 ms. Allocated memory is still 125.8 MB. Free memory was 97.6 MB in the beginning and 103.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:39,319 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.67 ms. Allocated memory is still 125.8 MB. Free memory was 103.8 MB in the beginning and 102.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:39,321 INFO L168 Benchmark]: Boogie Preprocessor took 20.14 ms. Allocated memory is still 125.8 MB. Free memory was 102.6 MB in the beginning and 101.7 MB in the end (delta: 968.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:39,322 INFO L168 Benchmark]: RCFGBuilder took 652.57 ms. Allocated memory is still 125.8 MB. Free memory was 101.7 MB in the beginning and 86.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:39,322 INFO L168 Benchmark]: TraceAbstraction took 872.44 ms. Allocated memory is still 125.8 MB. Free memory was 85.4 MB in the beginning and 83.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:39,324 INFO L168 Benchmark]: Witness Printer took 81.68 ms. Allocated memory is still 125.8 MB. Free memory was 83.3 MB in the beginning and 80.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:39,327 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 81.8 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.53 ms. Allocated memory is still 125.8 MB. Free memory was 97.6 MB in the beginning and 103.8 MB in the end (delta: -6.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.67 ms. Allocated memory is still 125.8 MB. Free memory was 103.8 MB in the beginning and 102.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.14 ms. Allocated memory is still 125.8 MB. Free memory was 102.6 MB in the beginning and 101.7 MB in the end (delta: 968.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 652.57 ms. Allocated memory is still 125.8 MB. Free memory was 101.7 MB in the beginning and 86.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 872.44 ms. Allocated memory is still 125.8 MB. Free memory was 85.4 MB in the beginning and 83.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Witness Printer took 81.68 ms. Allocated memory is still 125.8 MB. Free memory was 83.3 MB in the beginning and 80.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((x <= 2147483647 && 0 <= y) && 0 <= x) && y <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 25 SDslu, 22 SDs, 0 SdLazy, 40 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...