./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/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 64bit --witnessprinter.graph.data.programhash 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da ....................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:42:15,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:15,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:15,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:15,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:15,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:15,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:15,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:15,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:15,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:15,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:15,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:15,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:15,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:15,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:15,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:15,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:15,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:15,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:15,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:15,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:15,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:15,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:15,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:15,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:15,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:15,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:15,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:15,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:15,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:15,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:15,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:15,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:15,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:15,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:15,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:15,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:15,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:15,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:15,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:15,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:15,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:42:15,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:15,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:15,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:15,832 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:15,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:15,833 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:15,833 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:15,833 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:15,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:15,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:15,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:15,835 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:15,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:15,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:15,836 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:15,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:15,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:42:15,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:15,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:15,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:15,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:15,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:15,839 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:42:15,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:15,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:15,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:15,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:15,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:15,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:15,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:15,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:15,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:15,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:15,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:15,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:15,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:15,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:15,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:15,843 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_85936063-53d8-4005-a00d-f21b9cfe5761/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2020-11-28 07:42:16,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:16,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:16,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:16,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:16,145 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:16,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2020-11-28 07:42:16,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/data/091cb79c6/cc6a4848a3ac4300928a54f5ae562329/FLAGc1683f11c [2020-11-28 07:42:16,711 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:16,712 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2020-11-28 07:42:16,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/data/091cb79c6/cc6a4848a3ac4300928a54f5ae562329/FLAGc1683f11c [2020-11-28 07:42:17,080 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/data/091cb79c6/cc6a4848a3ac4300928a54f5ae562329 [2020-11-28 07:42:17,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:17,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:17,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:17,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:17,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:17,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d9c9694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17, skipping insertion in model container [2020-11-28 07:42:17,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:17,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:17,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:17,270 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:17,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:17,319 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:17,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17 WrapperNode [2020-11-28 07:42:17,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:17,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:17,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:17,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:17,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:17,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:17,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:17,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:17,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... [2020-11-28 07:42:17,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:17,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:17,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:17,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:17,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/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 07:42:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:17,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:17,730 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:17,730 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 07:42:17,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:17 BoogieIcfgContainer [2020-11-28 07:42:17,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:17,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:17,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:17,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:17,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:17" (1/3) ... [2020-11-28 07:42:17,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa0cc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:17, skipping insertion in model container [2020-11-28 07:42:17,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:17" (2/3) ... [2020-11-28 07:42:17,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa0cc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:17, skipping insertion in model container [2020-11-28 07:42:17,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:17" (3/3) ... [2020-11-28 07:42:17,741 INFO L111 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1.c [2020-11-28 07:42:17,751 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:17,758 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:42:17,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:42:17,807 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:17,807 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:17,807 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:17,808 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:17,808 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:17,808 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:17,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:17,808 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 07:42:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:42:17,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:17,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:42:17,851 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:42:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:17,858 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2020-11-28 07:42:17,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:17,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714130635] [2020-11-28 07:42:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:18,026 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 07:42:18,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714130635] [2020-11-28 07:42:18,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:18,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:18,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160780356] [2020-11-28 07:42:18,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:18,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:18,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:18,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:18,048 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-11-28 07:42:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:18,225 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-11-28 07:42:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:18,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:42:18,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:18,235 INFO L225 Difference]: With dead ends: 32 [2020-11-28 07:42:18,235 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 07:42:18,238 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 07:42:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 07:42:18,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2020-11-28 07:42:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 07:42:18,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-28 07:42:18,271 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2020-11-28 07:42:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:18,272 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-28 07:42:18,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-28 07:42:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:42:18,272 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:18,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:42:18,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:18,273 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:42:18,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:18,274 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-11-28 07:42:18,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:18,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658859439] [2020-11-28 07:42:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:18,308 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 07:42:18,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658859439] [2020-11-28 07:42:18,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:18,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:18,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309045668] [2020-11-28 07:42:18,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:42:18,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:18,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:42:18,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:42:18,320 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-11-28 07:42:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:18,416 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-11-28 07:42:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:18,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:42:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:18,417 INFO L225 Difference]: With dead ends: 25 [2020-11-28 07:42:18,417 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:42:18,418 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 07:42:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:42:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2020-11-28 07:42:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 07:42:18,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-28 07:42:18,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2020-11-28 07:42:18,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:18,423 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-28 07:42:18,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:42:18,423 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-28 07:42:18,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:42:18,424 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:18,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-28 07:42:18,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:18,425 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:42:18,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:18,425 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2020-11-28 07:42:18,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:18,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748851524] [2020-11-28 07:42:18,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:18,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748851524] [2020-11-28 07:42:18,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263068162] [2020-11-28 07:42:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/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 07:42:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:18,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:42:18,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:18,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:18,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:42:18,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2020-11-28 07:42:18,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884420852] [2020-11-28 07:42:18,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:42:18,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:18,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:42:18,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:42:18,696 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2020-11-28 07:42:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:18,785 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-11-28 07:42:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:18,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:42:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:18,787 INFO L225 Difference]: With dead ends: 32 [2020-11-28 07:42:18,787 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 07:42:18,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:42:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 07:42:18,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2020-11-28 07:42:18,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 07:42:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-11-28 07:42:18,792 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2020-11-28 07:42:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:18,792 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-28 07:42:18,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:42:18,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2020-11-28 07:42:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:42:18,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:18,793 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:19,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:42:19,004 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:42:19,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:19,005 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2020-11-28 07:42:19,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:19,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81869984] [2020-11-28 07:42:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:19,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81869984] [2020-11-28 07:42:19,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371675386] [2020-11-28 07:42:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 07:42:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:19,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:42:19,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:19,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:19,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [937789349] [2020-11-28 07:42:19,244 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-28 07:42:19,245 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:42:19,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:42:19,255 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:42:19,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:42:19,504 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:42:19,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:42:19,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 14 [2020-11-28 07:42:19,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848977343] [2020-11-28 07:42:19,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:42:19,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:19,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:42:19,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:42:19,794 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 7 states. [2020-11-28 07:42:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:19,833 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2020-11-28 07:42:19,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:42:19,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-28 07:42:19,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:19,834 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:42:19,835 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:19,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:42:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:19,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:19,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-11-28 07:42:19,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:19,836 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:19,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:42:19,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:19,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:20,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:42:20,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:20,067 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-11-28 07:42:20,068 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:20,068 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-28 07:42:20,068 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 07:42:20,068 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-28 07:42:20,068 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-28 07:42:20,068 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-11-28 07:42:20,068 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-11-28 07:42:20,069 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-28 07:42:20,069 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:20,069 INFO L274 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2020-11-28 07:42:20,069 INFO L274 CegarLoopResult]: For program point L18(lines 18 26) no Hoare annotation was computed. [2020-11-28 07:42:20,069 INFO L270 CegarLoopResult]: At program point L20-2(lines 19 25) the Hoare annotation is: (and (< 0 ULTIMATE.start_main_~y1~0) (<= ULTIMATE.start_main_~y2~0 2147483647) (<= ULTIMATE.start_main_~y1~0 2147483647) (< 0 ULTIMATE.start_main_~y2~0)) [2020-11-28 07:42:20,070 INFO L270 CegarLoopResult]: At program point L18-1(lines 18 26) the Hoare annotation is: (or (<= ULTIMATE.start_main_~y1~0 (+ ULTIMATE.start_main_~y2~0 2147483646)) (<= ULTIMATE.start_main_~y1~0 2147483647)) [2020-11-28 07:42:20,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:20 BoogieIcfgContainer [2020-11-28 07:42:20,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:20,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:20,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:20,086 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:20,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:17" (3/4) ... [2020-11-28 07:42:20,090 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:20,099 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:42:20,100 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:42:20,100 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:20,148 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_85936063-53d8-4005-a00d-f21b9cfe5761/bin/utaipan/witness.graphml [2020-11-28 07:42:20,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:20,149 INFO L168 Benchmark]: Toolchain (without parser) took 3064.53 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 65.3 MB in the beginning and 55.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:20,150 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 100.7 MB. Free memory is still 81.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:20,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.98 ms. Allocated memory is still 100.7 MB. Free memory was 65.1 MB in the beginning and 78.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:20,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 100.7 MB. Free memory was 78.8 MB in the beginning and 77.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:20,151 INFO L168 Benchmark]: Boogie Preprocessor took 34.39 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:20,151 INFO L168 Benchmark]: RCFGBuilder took 336.06 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 66.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:20,152 INFO L168 Benchmark]: TraceAbstraction took 2352.06 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 65.9 MB in the beginning and 57.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:20,153 INFO L168 Benchmark]: Witness Printer took 61.74 ms. Allocated memory is still 123.7 MB. Free memory was 57.1 MB in the beginning and 55.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:20,155 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 100.7 MB. Free memory is still 81.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 231.98 ms. Allocated memory is still 100.7 MB. Free memory was 65.1 MB in the beginning and 78.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 100.7 MB. Free memory was 78.8 MB in the beginning and 77.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.39 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 336.06 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 66.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2352.06 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 65.9 MB in the beginning and 57.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. * Witness Printer took 61.74 ms. Allocated memory is still 123.7 MB. Free memory was 57.1 MB in the beginning and 55.0 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: 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: 18]: Loop Invariant Derived loop invariant: y1 <= y2 + 2147483646 || y1 <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((0 < y1 && y2 <= 2147483647) && y1 <= 2147483647) && 0 < y2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 80 SDslu, 2 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, 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, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 22 HoareAnnotationTreeSize, 2 FomulaSimplifications, 51 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2480 SizeOfPredicates, 2 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 3/15 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: OVERALL_TIME[ms]: 260, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME[ms]: 10, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 14, TOOLS_QUANTIFIERELIM_TIME[ms]: 6, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 2, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 26, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME[ms]: 175, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME[ms]: 27, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 9, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 8, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 10, DAG_COMPRESSION_PROCESSED_NODES: 88, DAG_COMPRESSION_RETAINED_NODES: 28, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...