./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark19_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_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/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 b3778a0dc06b06dbf04163d9b170743f1501fb85 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:42:01,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:01,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:01,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:01,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:01,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:01,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:01,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:01,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:01,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:01,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:01,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:01,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:01,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:01,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:01,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:01,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:01,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:01,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:01,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:01,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:01,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:01,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:01,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:01,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:01,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:01,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:01,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:01,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:01,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:01,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:01,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:01,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:01,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:01,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:01,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:01,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:01,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:01,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:01,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:01,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:01,546 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-28 07:42:01,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:01,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:01,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:01,590 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:01,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:01,590 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:01,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:01,591 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:01,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:01,591 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:01,592 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:01,594 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:01,595 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:01,595 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:01,595 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:01,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:01,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:01,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:42:01,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:01,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:01,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:01,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:01,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:01,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:01,599 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:42:01,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:01,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:01,599 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:01,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:01,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:01,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:01,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:01,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:01,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:01,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:01,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:01,603 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:01,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:01,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:01,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:01,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:01,604 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_63bef252-ed01-457a-b3e1-efed34703a18/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3778a0dc06b06dbf04163d9b170743f1501fb85 [2020-11-28 07:42:01,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:01,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:01,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:01,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:01,938 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:01,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2020-11-28 07:42:02,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/data/58990f3c6/bac9345f7d044ded9bc31c1ed39d9a23/FLAG32b66b8b5 [2020-11-28 07:42:02,563 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:02,563 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2020-11-28 07:42:02,572 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/data/58990f3c6/bac9345f7d044ded9bc31c1ed39d9a23/FLAG32b66b8b5 [2020-11-28 07:42:02,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/data/58990f3c6/bac9345f7d044ded9bc31c1ed39d9a23 [2020-11-28 07:42:02,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:02,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:02,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:02,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:02,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:02,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8d8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:02, skipping insertion in model container [2020-11-28 07:42:02,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:02" (1/1) ... [2020-11-28 07:42:02,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:02,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:03,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:03,164 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:03,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:03,196 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:03,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03 WrapperNode [2020-11-28 07:42:03,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:03,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:03,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:03,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:03,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:03,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:03,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:03,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:03,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... [2020-11-28 07:42:03,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:03,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:03,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:03,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:03,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/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 07:42:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:03,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:03,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:03,773 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:03,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:03 BoogieIcfgContainer [2020-11-28 07:42:03,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:03,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:03,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:03,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:03,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:02" (1/3) ... [2020-11-28 07:42:03,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4f80fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:03, skipping insertion in model container [2020-11-28 07:42:03,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:03" (2/3) ... [2020-11-28 07:42:03,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4f80fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:03, skipping insertion in model container [2020-11-28 07:42:03,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:03" (3/3) ... [2020-11-28 07:42:03,791 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark19_conjunctive.i [2020-11-28 07:42:03,805 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:03,809 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:42:03,820 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:42:03,845 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:03,845 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:03,845 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:03,845 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:03,845 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:03,846 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:03,846 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:03,846 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 07:42:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:42:03,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:03,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:42:03,865 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:42:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:03,871 INFO L82 PathProgramCache]: Analyzing trace with hash 2271356, now seen corresponding path program 1 times [2020-11-28 07:42:03,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:03,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786612690] [2020-11-28 07:42:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:04,054 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 07:42:04,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786612690] [2020-11-28 07:42:04,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:04,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:04,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769298647] [2020-11-28 07:42:04,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:04,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:04,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:04,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:04,082 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 4 states. [2020-11-28 07:42:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:04,163 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-11-28 07:42:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:04,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:42:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:04,195 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:42:04,195 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:42:04,198 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 07:42:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:42:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 07:42:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 07:42:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-28 07:42:04,231 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4 [2020-11-28 07:42:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:04,232 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-28 07:42:04,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-28 07:42:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:42:04,233 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:04,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:42:04,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:04,234 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:42:04,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:04,237 INFO L82 PathProgramCache]: Analyzing trace with hash 70412086, now seen corresponding path program 1 times [2020-11-28 07:42:04,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:04,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144431315] [2020-11-28 07:42:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:04,298 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 07:42:04,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144431315] [2020-11-28 07:42:04,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:04,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:04,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810337988] [2020-11-28 07:42:04,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:04,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:04,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:04,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:04,302 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-11-28 07:42:04,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:04,316 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-28 07:42:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:04,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:42:04,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:04,317 INFO L225 Difference]: With dead ends: 10 [2020-11-28 07:42:04,318 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 07:42:04,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 07:42:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 07:42:04,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 07:42:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 07:42:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 07:42:04,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-28 07:42:04,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:04,321 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 07:42:04,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:04,322 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 07:42:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:42:04,322 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:04,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:42:04,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:04,323 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:42:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:04,324 INFO L82 PathProgramCache]: Analyzing trace with hash -2112192578, now seen corresponding path program 1 times [2020-11-28 07:42:04,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:04,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622150326] [2020-11-28 07:42:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:04,361 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 07:42:04,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622150326] [2020-11-28 07:42:04,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:04,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:04,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012029273] [2020-11-28 07:42:04,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:04,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:04,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:04,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:04,363 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-28 07:42:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:04,406 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-28 07:42:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:04,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:42:04,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:04,407 INFO L225 Difference]: With dead ends: 9 [2020-11-28 07:42:04,407 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 07:42:04,408 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 07:42:04,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 07:42:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 07:42:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 07:42:04,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 07:42:04,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-28 07:42:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:04,410 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 07:42:04,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 07:42:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:42:04,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:04,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:04,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:42:04,411 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:42:04,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:04,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1053460424, now seen corresponding path program 1 times [2020-11-28 07:42:04,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:04,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597878677] [2020-11-28 07:42:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:04,468 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 07:42:04,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597878677] [2020-11-28 07:42:04,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:04,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:04,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044264408] [2020-11-28 07:42:04,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:04,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:04,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:04,471 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2020-11-28 07:42:04,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:04,510 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-28 07:42:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:42:04,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:42:04,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:04,511 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:42:04,511 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:42:04,512 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 07:42:04,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:42:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 07:42:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:42:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 07:42:04,516 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-11-28 07:42:04,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:04,516 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 07:42:04,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:04,517 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 07:42:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:42:04,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:04,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2020-11-28 07:42:04,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:42:04,518 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:42:04,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:04,518 INFO L82 PathProgramCache]: Analyzing trace with hash -542918662, now seen corresponding path program 1 times [2020-11-28 07:42:04,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:04,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220129098] [2020-11-28 07:42:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:04,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220129098] [2020-11-28 07:42:04,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095354640] [2020-11-28 07:42:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/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 07:42:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:04,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:42:04,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:42:04,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:04,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [532519821] [2020-11-28 07:42:04,973 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-28 07:42:04,973 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:42:04,978 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:42:04,984 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:42:04,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:42:05,634 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:42:05,920 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-28 07:42:06,271 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-11-28 07:42:06,574 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2020-11-28 07:42:06,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:42:06,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:42:06,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 14 [2020-11-28 07:42:06,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158571763] [2020-11-28 07:42:06,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 07:42:06,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:06,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 07:42:06,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2020-11-28 07:42:06,695 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 15 states. [2020-11-28 07:42:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:06,818 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-28 07:42:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:42:06,818 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-11-28 07:42:06,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:06,818 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:42:06,819 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:06,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2020-11-28 07:42:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:06,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:06,821 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-28 07:42:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:06,821 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:06,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 07:42:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:06,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:07,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:07,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:07,077 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 07:42:07,077 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:07,077 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 07:42:07,078 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-28 07:42:07,078 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-28 07:42:07,078 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 07:42:07,078 INFO L274 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-11-28 07:42:07,078 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed. [2020-11-28 07:42:07,078 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 07:42:07,078 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 07:42:07,078 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:07,079 INFO L270 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: (<= ULTIMATE.start_main_~j~0 2147483647) [2020-11-28 07:42:07,079 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 2147483647) (<= 0 ULTIMATE.start_main_~k~0)) [2020-11-28 07:42:07,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:07 BoogieIcfgContainer [2020-11-28 07:42:07,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:07,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:07,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:07,099 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:07,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:03" (3/4) ... [2020-11-28 07:42:07,102 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:07,114 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:42:07,114 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:42:07,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:07,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:07,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_63bef252-ed01-457a-b3e1-efed34703a18/bin/utaipan/witness.graphml [2020-11-28 07:42:07,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:07,174 INFO L168 Benchmark]: Toolchain (without parser) took 4243.42 ms. Allocated memory was 90.2 MB in the beginning and 148.9 MB in the end (delta: 58.7 MB). Free memory was 61.9 MB in the beginning and 71.7 MB in the end (delta: -9.8 MB). Peak memory consumption was 48.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:07,174 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:07,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.33 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 61.7 MB in the beginning and 101.0 MB in the end (delta: -39.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:07,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.36 ms. Allocated memory is still 123.7 MB. Free memory was 101.0 MB in the beginning and 99.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:07,176 INFO L168 Benchmark]: Boogie Preprocessor took 17.66 ms. Allocated memory is still 123.7 MB. Free memory was 99.3 MB in the beginning and 98.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:07,176 INFO L168 Benchmark]: RCFGBuilder took 527.23 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 81.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:07,177 INFO L168 Benchmark]: TraceAbstraction took 3321.06 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 81.5 MB in the beginning and 73.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:07,177 INFO L168 Benchmark]: Witness Printer took 74.63 ms. Allocated memory is still 148.9 MB. Free memory was 73.8 MB in the beginning and 71.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:07,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.33 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 61.7 MB in the beginning and 101.0 MB in the end (delta: -39.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.36 ms. Allocated memory is still 123.7 MB. Free memory was 101.0 MB in the beginning and 99.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.66 ms. Allocated memory is still 123.7 MB. Free memory was 99.3 MB in the beginning and 98.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 527.23 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 81.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3321.06 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 81.5 MB in the beginning and 73.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 34.4 MB. Max. memory is 16.1 GB. * Witness Printer took 74.63 ms. Allocated memory is still 148.9 MB. Free memory was 73.8 MB in the beginning and 71.7 MB in the end (delta: 2.1 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: 25]: 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: 25]: 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: 24]: Loop Invariant Derived loop invariant: (j <= k && k <= 2147483647) && 0 <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: j <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 28 SDslu, 20 SDs, 0 SdLazy, 57 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 1781 SizeOfPredicates, 8 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1/15 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...