./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/gcd02.c --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_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/gcd02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/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 ad183272c46520d125e7fadb8bd25966ebd670c1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:17:59,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:17:59,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:17:59,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:17:59,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:17:59,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:17:59,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:17:59,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:17:59,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:17:59,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:17:59,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:17:59,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:17:59,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:17:59,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:17:59,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:17:59,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:17:59,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:17:59,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:17:59,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:17:59,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:17:59,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:17:59,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:17:59,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:17:59,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:17:59,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:17:59,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:17:59,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:17:59,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:17:59,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:17:59,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:17:59,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:17:59,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:17:59,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:17:59,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:17:59,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:17:59,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:17:59,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:17:59,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:17:59,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:17:59,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:17:59,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:17:59,820 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 03:17:59,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:17:59,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:17:59,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:17:59,850 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:17:59,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:17:59,850 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:17:59,851 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:17:59,851 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:17:59,851 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:17:59,852 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:17:59,852 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:17:59,853 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:17:59,853 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:17:59,853 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:17:59,854 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:17:59,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:17:59,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:17:59,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 03:17:59,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:17:59,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:17:59,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:17:59,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:17:59,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:17:59,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:17:59,857 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 03:17:59,858 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:17:59,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:17:59,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:17:59,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:17:59,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:17:59,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:17:59,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:17:59,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:17:59,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:17:59,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:17:59,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:17:59,861 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:17:59,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:17:59,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:17:59,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:17:59,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:17:59,863 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_d1f48c16-2b45-4d33-bc00-2c3ae979329b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad183272c46520d125e7fadb8bd25966ebd670c1 [2020-11-30 03:18:00,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:18:00,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:18:00,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:18:00,179 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:18:00,189 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:18:00,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/../../sv-benchmarks/c/recursive/gcd02.c [2020-11-30 03:18:00,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/data/542e39cd9/2ba48a3de7c54077bd0f61bd5711275c/FLAG72a2aed96 [2020-11-30 03:18:00,838 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:18:00,838 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/sv-benchmarks/c/recursive/gcd02.c [2020-11-30 03:18:00,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/data/542e39cd9/2ba48a3de7c54077bd0f61bd5711275c/FLAG72a2aed96 [2020-11-30 03:18:01,194 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/data/542e39cd9/2ba48a3de7c54077bd0f61bd5711275c [2020-11-30 03:18:01,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:18:01,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:18:01,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:18:01,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:18:01,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:18:01,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177b0038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01, skipping insertion in model container [2020-11-30 03:18:01,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:18:01,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:18:01,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:18:01,469 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:18:01,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:18:01,512 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:18:01,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01 WrapperNode [2020-11-30 03:18:01,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:18:01,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:18:01,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:18:01,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:18:01,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:18:01,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:18:01,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:18:01,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:18:01,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... [2020-11-30 03:18:01,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:18:01,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:18:01,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:18:01,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:18:01,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/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 [2020-11-30 03:18:01,702 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-11-30 03:18:01,702 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-11-30 03:18:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:18:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:18:01,703 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2020-11-30 03:18:01,703 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2020-11-30 03:18:01,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:18:01,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:18:02,274 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:18:02,275 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-30 03:18:02,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:18:02 BoogieIcfgContainer [2020-11-30 03:18:02,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:18:02,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:18:02,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:18:02,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:18:02,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:18:01" (1/3) ... [2020-11-30 03:18:02,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3949705d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:18:02, skipping insertion in model container [2020-11-30 03:18:02,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:18:01" (2/3) ... [2020-11-30 03:18:02,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3949705d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:18:02, skipping insertion in model container [2020-11-30 03:18:02,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:18:02" (3/3) ... [2020-11-30 03:18:02,302 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd02.c [2020-11-30 03:18:02,314 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:18:02,318 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 03:18:02,332 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 03:18:02,369 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:18:02,369 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:18:02,370 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:18:02,370 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:18:02,370 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:18:02,370 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:18:02,371 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:18:02,371 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:18:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-30 03:18:02,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 03:18:02,395 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:02,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:02,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:02,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:02,403 INFO L82 PathProgramCache]: Analyzing trace with hash -116281226, now seen corresponding path program 1 times [2020-11-30 03:18:02,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:02,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842632584] [2020-11-30 03:18:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:02,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:02,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842632584] [2020-11-30 03:18:02,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:18:02,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 03:18:02,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338464861] [2020-11-30 03:18:02,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:18:02,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:02,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:18:02,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:18:02,696 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-11-30 03:18:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:02,965 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-11-30 03:18:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:18:02,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 03:18:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:02,992 INFO L225 Difference]: With dead ends: 56 [2020-11-30 03:18:02,999 INFO L226 Difference]: Without dead ends: 48 [2020-11-30 03:18:03,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:18:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-30 03:18:03,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-11-30 03:18:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-30 03:18:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-11-30 03:18:03,055 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 9 [2020-11-30 03:18:03,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:03,056 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-11-30 03:18:03,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:18:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-11-30 03:18:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 03:18:03,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:03,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:03,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:18:03,059 INFO L429 AbstractCegarLoop]: === Iteration 2 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:03,060 INFO L82 PathProgramCache]: Analyzing trace with hash -116281002, now seen corresponding path program 1 times [2020-11-30 03:18:03,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:03,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599589113] [2020-11-30 03:18:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:03,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599589113] [2020-11-30 03:18:03,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:18:03,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 03:18:03,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149993827] [2020-11-30 03:18:03,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:18:03,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:03,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:18:03,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:18:03,163 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2020-11-30 03:18:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:03,325 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-11-30 03:18:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:18:03,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 03:18:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:03,330 INFO L225 Difference]: With dead ends: 76 [2020-11-30 03:18:03,330 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 03:18:03,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:18:03,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 03:18:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-11-30 03:18:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-30 03:18:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2020-11-30 03:18:03,362 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 9 [2020-11-30 03:18:03,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:03,363 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2020-11-30 03:18:03,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:18:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2020-11-30 03:18:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 03:18:03,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:03,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:03,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:18:03,369 INFO L429 AbstractCegarLoop]: === Iteration 3 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:03,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:03,373 INFO L82 PathProgramCache]: Analyzing trace with hash -209492322, now seen corresponding path program 1 times [2020-11-30 03:18:03,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:03,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607617597] [2020-11-30 03:18:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:03,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607617597] [2020-11-30 03:18:03,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:18:03,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 03:18:03,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489404795] [2020-11-30 03:18:03,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 03:18:03,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:03,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 03:18:03,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:18:03,521 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand 8 states. [2020-11-30 03:18:03,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:03,793 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2020-11-30 03:18:03,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 03:18:03,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 03:18:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:03,803 INFO L225 Difference]: With dead ends: 87 [2020-11-30 03:18:03,807 INFO L226 Difference]: Without dead ends: 86 [2020-11-30 03:18:03,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 03:18:03,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-30 03:18:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2020-11-30 03:18:03,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-30 03:18:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2020-11-30 03:18:03,840 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 15 [2020-11-30 03:18:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:03,840 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2020-11-30 03:18:03,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 03:18:03,841 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2020-11-30 03:18:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 03:18:03,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:03,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:03,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 03:18:03,845 INFO L429 AbstractCegarLoop]: === Iteration 4 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:03,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:03,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1276265154, now seen corresponding path program 1 times [2020-11-30 03:18:03,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:03,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760883988] [2020-11-30 03:18:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:04,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760883988] [2020-11-30 03:18:04,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461166053] [2020-11-30 03:18:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/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 [2020-11-30 03:18:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:04,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 03:18:04,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:18:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:04,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:18:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:04,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2052899698] [2020-11-30 03:18:04,400 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-11-30 03:18:04,400 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:18:04,406 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 03:18:04,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 03:18:04,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2020-11-30 03:18:04,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119764578] [2020-11-30 03:18:04,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 03:18:04,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:04,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 03:18:04,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:18:04,410 INFO L87 Difference]: Start difference. First operand 77 states and 92 transitions. Second operand 15 states. [2020-11-30 03:18:05,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:05,204 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2020-11-30 03:18:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 03:18:05,206 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2020-11-30 03:18:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:05,208 INFO L225 Difference]: With dead ends: 102 [2020-11-30 03:18:05,208 INFO L226 Difference]: Without dead ends: 101 [2020-11-30 03:18:05,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2020-11-30 03:18:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-30 03:18:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2020-11-30 03:18:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 03:18:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2020-11-30 03:18:05,245 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 15 [2020-11-30 03:18:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:05,246 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2020-11-30 03:18:05,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 03:18:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2020-11-30 03:18:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 03:18:05,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:05,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:05,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:05,477 INFO L429 AbstractCegarLoop]: === Iteration 5 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:05,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1584122339, now seen corresponding path program 1 times [2020-11-30 03:18:05,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:05,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593193806] [2020-11-30 03:18:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:05,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593193806] [2020-11-30 03:18:05,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990975303] [2020-11-30 03:18:05,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:05,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 03:18:05,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:18:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:05,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:18:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:05,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [188329095] [2020-11-30 03:18:05,898 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-11-30 03:18:05,899 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:18:05,899 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 03:18:05,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 03:18:05,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2020-11-30 03:18:05,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810652366] [2020-11-30 03:18:05,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 03:18:05,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:05,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 03:18:05,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:18:05,902 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand 15 states. [2020-11-30 03:18:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:06,458 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2020-11-30 03:18:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 03:18:06,459 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2020-11-30 03:18:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:06,461 INFO L225 Difference]: With dead ends: 104 [2020-11-30 03:18:06,461 INFO L226 Difference]: Without dead ends: 103 [2020-11-30 03:18:06,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-11-30 03:18:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-30 03:18:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-11-30 03:18:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-30 03:18:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2020-11-30 03:18:06,491 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 15 [2020-11-30 03:18:06,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:06,492 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2020-11-30 03:18:06,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 03:18:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2020-11-30 03:18:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 03:18:06,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:06,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:06,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:06,701 INFO L429 AbstractCegarLoop]: === Iteration 6 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:06,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2095672652, now seen corresponding path program 1 times [2020-11-30 03:18:06,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:06,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509019111] [2020-11-30 03:18:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:06,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509019111] [2020-11-30 03:18:06,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:18:06,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:18:06,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956036620] [2020-11-30 03:18:06,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:18:06,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:06,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:18:06,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:18:06,753 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand 3 states. [2020-11-30 03:18:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:06,778 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2020-11-30 03:18:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:18:06,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 03:18:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:06,781 INFO L225 Difference]: With dead ends: 101 [2020-11-30 03:18:06,781 INFO L226 Difference]: Without dead ends: 100 [2020-11-30 03:18:06,782 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 [2020-11-30 03:18:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-30 03:18:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-11-30 03:18:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-30 03:18:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2020-11-30 03:18:06,797 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 16 [2020-11-30 03:18:06,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:06,798 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2020-11-30 03:18:06,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:18:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2020-11-30 03:18:06,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 03:18:06,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:06,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:06,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 03:18:06,801 INFO L429 AbstractCegarLoop]: === Iteration 7 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:06,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:06,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1259763285, now seen corresponding path program 1 times [2020-11-30 03:18:06,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:06,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074135837] [2020-11-30 03:18:06,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:06,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074135837] [2020-11-30 03:18:06,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574009663] [2020-11-30 03:18:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:07,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 03:18:07,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:18:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:07,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:18:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:18:07,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:18:07,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10] total 25 [2020-11-30 03:18:07,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855533182] [2020-11-30 03:18:07,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 03:18:07,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:07,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 03:18:07,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-11-30 03:18:07,699 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand 11 states. [2020-11-30 03:18:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:08,009 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2020-11-30 03:18:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 03:18:08,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-11-30 03:18:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:08,012 INFO L225 Difference]: With dead ends: 119 [2020-11-30 03:18:08,012 INFO L226 Difference]: Without dead ends: 102 [2020-11-30 03:18:08,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2020-11-30 03:18:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-30 03:18:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-11-30 03:18:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-30 03:18:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2020-11-30 03:18:08,041 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 21 [2020-11-30 03:18:08,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:08,041 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2020-11-30 03:18:08,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 03:18:08,042 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2020-11-30 03:18:08,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 03:18:08,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:08,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:08,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:08,264 INFO L429 AbstractCegarLoop]: === Iteration 8 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash -400933366, now seen corresponding path program 1 times [2020-11-30 03:18:08,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:08,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329210452] [2020-11-30 03:18:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 03:18:08,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329210452] [2020-11-30 03:18:08,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057504326] [2020-11-30 03:18:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:08,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 03:18:08,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:18:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:18:08,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:18:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:18:09,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 03:18:09,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [11] total 23 [2020-11-30 03:18:09,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620149224] [2020-11-30 03:18:09,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 03:18:09,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:09,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 03:18:09,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2020-11-30 03:18:09,239 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand 15 states. [2020-11-30 03:18:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:09,511 INFO L93 Difference]: Finished difference Result 119 states and 144 transitions. [2020-11-30 03:18:09,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 03:18:09,512 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-11-30 03:18:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:09,513 INFO L225 Difference]: With dead ends: 119 [2020-11-30 03:18:09,513 INFO L226 Difference]: Without dead ends: 101 [2020-11-30 03:18:09,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2020-11-30 03:18:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-30 03:18:09,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2020-11-30 03:18:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-30 03:18:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-11-30 03:18:09,540 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 24 [2020-11-30 03:18:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:09,540 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-11-30 03:18:09,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 03:18:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-11-30 03:18:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 03:18:09,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:09,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:09,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:09,769 INFO L429 AbstractCegarLoop]: === Iteration 9 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:09,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1995032436, now seen corresponding path program 1 times [2020-11-30 03:18:09,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:09,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560634862] [2020-11-30 03:18:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 03:18:09,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560634862] [2020-11-30 03:18:09,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:18:09,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 03:18:09,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405260962] [2020-11-30 03:18:09,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 03:18:09,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 03:18:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-30 03:18:09,889 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 9 states. [2020-11-30 03:18:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:10,132 INFO L93 Difference]: Finished difference Result 119 states and 142 transitions. [2020-11-30 03:18:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 03:18:10,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-11-30 03:18:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:10,136 INFO L225 Difference]: With dead ends: 119 [2020-11-30 03:18:10,136 INFO L226 Difference]: Without dead ends: 118 [2020-11-30 03:18:10,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-30 03:18:10,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-30 03:18:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 104. [2020-11-30 03:18:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-30 03:18:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2020-11-30 03:18:10,164 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 24 [2020-11-30 03:18:10,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:10,165 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2020-11-30 03:18:10,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 03:18:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2020-11-30 03:18:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 03:18:10,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:10,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:10,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 03:18:10,169 INFO L429 AbstractCegarLoop]: === Iteration 10 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:10,170 INFO L82 PathProgramCache]: Analyzing trace with hash 578646529, now seen corresponding path program 1 times [2020-11-30 03:18:10,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:10,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425509222] [2020-11-30 03:18:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:18:10,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425509222] [2020-11-30 03:18:10,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129614626] [2020-11-30 03:18:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:10,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 03:18:10,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:18:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:18:10,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:18:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:18:11,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:18:11,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11, 11] total 28 [2020-11-30 03:18:11,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139642159] [2020-11-30 03:18:11,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 03:18:11,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:11,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 03:18:11,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2020-11-30 03:18:11,331 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand 12 states. [2020-11-30 03:18:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:11,707 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2020-11-30 03:18:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 03:18:11,708 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-11-30 03:18:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:11,710 INFO L225 Difference]: With dead ends: 125 [2020-11-30 03:18:11,710 INFO L226 Difference]: Without dead ends: 104 [2020-11-30 03:18:11,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2020-11-30 03:18:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-30 03:18:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2020-11-30 03:18:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-30 03:18:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-11-30 03:18:11,725 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 30 [2020-11-30 03:18:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:11,725 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-11-30 03:18:11,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 03:18:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-11-30 03:18:11,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 03:18:11,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:18:11,727 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:18:11,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 03:18:11,928 INFO L429 AbstractCegarLoop]: === Iteration 11 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:18:11,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:18:11,929 INFO L82 PathProgramCache]: Analyzing trace with hash 841640908, now seen corresponding path program 1 times [2020-11-30 03:18:11,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:18:11,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637555420] [2020-11-30 03:18:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:18:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:18:12,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637555420] [2020-11-30 03:18:12,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945937681] [2020-11-30 03:18:12,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:18:12,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 03:18:12,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:18:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 03:18:12,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:18:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 03:18:13,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 03:18:13,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [14] total 27 [2020-11-30 03:18:13,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983490156] [2020-11-30 03:18:13,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 03:18:13,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:18:13,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 03:18:13,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2020-11-30 03:18:13,175 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 16 states. [2020-11-30 03:18:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:18:13,468 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2020-11-30 03:18:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 03:18:13,469 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2020-11-30 03:18:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:18:13,470 INFO L225 Difference]: With dead ends: 92 [2020-11-30 03:18:13,470 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:18:13,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2020-11-30 03:18:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:18:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:18:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:18:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:18:13,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-11-30 03:18:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:18:13,473 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:18:13,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 03:18:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:18:13,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:18:13,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:18:13,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 03:18:14,037 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2020-11-30 03:18:14,178 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 20 [2020-11-30 03:18:14,427 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-11-30 03:18:14,437 INFO L274 CegarLoopResult]: For program point L33(lines 33 35) no Hoare annotation was computed. [2020-11-30 03:18:14,437 INFO L274 CegarLoopResult]: For program point dividesFINAL(lines 32 40) no Hoare annotation was computed. [2020-11-30 03:18:14,437 INFO L274 CegarLoopResult]: For program point dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2020-11-30 03:18:14,437 INFO L274 CegarLoopResult]: For program point dividesEXIT(lines 32 40) no Hoare annotation was computed. [2020-11-30 03:18:14,437 INFO L274 CegarLoopResult]: For program point dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2020-11-30 03:18:14,437 INFO L274 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-11-30 03:18:14,437 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-11-30 03:18:14,438 INFO L270 CegarLoopResult]: At program point L39-2(line 39) the Hoare annotation is: (let ((.cse0 (not (< 0 |divides_#in~n|)))) (and (or (not (< |divides_#in~m| 2147483647)) .cse0 (< divides_~m 2147483647)) (or (not (<= |divides_#in~m| 2147483647)) .cse0 (and (<= divides_~n divides_~m) (< 0 divides_~n) (<= divides_~m 2147483647))))) [2020-11-30 03:18:14,438 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-11-30 03:18:14,438 INFO L274 CegarLoopResult]: For program point L39-3(line 39) no Hoare annotation was computed. [2020-11-30 03:18:14,438 INFO L277 CegarLoopResult]: At program point dividesENTRY(lines 32 40) the Hoare annotation is: true [2020-11-30 03:18:14,438 INFO L274 CegarLoopResult]: For program point gcdEXIT(lines 17 29) no Hoare annotation was computed. [2020-11-30 03:18:14,438 INFO L274 CegarLoopResult]: For program point L25(lines 25 27) no Hoare annotation was computed. [2020-11-30 03:18:14,438 INFO L274 CegarLoopResult]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-30 03:18:14,438 INFO L274 CegarLoopResult]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-30 03:18:14,439 INFO L274 CegarLoopResult]: For program point gcdFINAL(lines 17 29) no Hoare annotation was computed. [2020-11-30 03:18:14,439 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-30 03:18:14,439 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-11-30 03:18:14,439 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-30 03:18:14,439 INFO L270 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: (let ((.cse0 (not (<= |gcd_#in~y1| 2147483647))) (.cse1 (not (<= |gcd_#in~y2| 2147483647)))) (and (or .cse0 (not (<= |gcd_#in~y2| 2147483646)) (<= gcd_~y2 2147483646)) (or .cse0 .cse1 (and (<= (+ gcd_~y2 gcd_~y1) 2147483647) (< 0 gcd_~y2)) (not (<= (+ |gcd_#in~y1| |gcd_#in~y2|) 2147483647))) (or .cse0 (and (<= gcd_~y1 2147483647) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (< 0 gcd_~y1) (<= gcd_~y2 2147483647) (<= |gcd_#in~y1| gcd_~y1)) .cse1))) [2020-11-30 03:18:14,439 INFO L274 CegarLoopResult]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-30 03:18:14,439 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-30 03:18:14,439 INFO L274 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-11-30 03:18:14,440 INFO L270 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: (let ((.cse0 (not (<= |gcd_#in~y1| 2147483647))) (.cse1 (not (<= |gcd_#in~y2| 2147483647)))) (and (or (and (<= gcd_~y1 2147483647) (<= gcd_~y1 (+ gcd_~y2 2147483646)) (<= |gcd_#in~y1| gcd_~y1) (<= gcd_~y2 2147483646)) .cse0 .cse1) (or .cse0 (and (<= (+ gcd_~y2 gcd_~y1) 2147483647) (< 0 gcd_~y2) (< 0 gcd_~y1)) .cse1 (not (<= (+ |gcd_#in~y1| |gcd_#in~y2|) 2147483647))))) [2020-11-30 03:18:14,440 INFO L277 CegarLoopResult]: At program point gcdENTRY(lines 17 29) the Hoare annotation is: true [2020-11-30 03:18:14,440 INFO L274 CegarLoopResult]: For program point L26-3(line 26) no Hoare annotation was computed. [2020-11-30 03:18:14,440 INFO L274 CegarLoopResult]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-30 03:18:14,440 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 29) no Hoare annotation was computed. [2020-11-30 03:18:14,440 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 03:18:14,440 INFO L270 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-11-30 03:18:14,440 INFO L274 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-11-30 03:18:14,440 INFO L274 CegarLoopResult]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-11-30 03:18:14,440 INFO L274 CegarLoopResult]: For program point L44(lines 44 46) no Hoare annotation was computed. [2020-11-30 03:18:14,441 INFO L270 CegarLoopResult]: At program point L42(lines 42 59) the Hoare annotation is: (<= ULTIMATE.start_main_~m~0 2147483647) [2020-11-30 03:18:14,441 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 03:18:14,441 INFO L270 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (< 0 ULTIMATE.start_main_~z~0) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-11-30 03:18:14,441 INFO L274 CegarLoopResult]: For program point L53-1(line 53) no Hoare annotation was computed. [2020-11-30 03:18:14,441 INFO L274 CegarLoopResult]: For program point L51(lines 51 58) no Hoare annotation was computed. [2020-11-30 03:18:14,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:18:14 BoogieIcfgContainer [2020-11-30 03:18:14,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:18:14,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:18:14,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:18:14,455 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:18:14,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:18:02" (3/4) ... [2020-11-30 03:18:14,458 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:18:14,463 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure divides [2020-11-30 03:18:14,464 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2020-11-30 03:18:14,470 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-30 03:18:14,471 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 03:18:14,471 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:18:14,472 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:18:14,540 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d1f48c16-2b45-4d33-bc00-2c3ae979329b/bin/utaipan/witness.graphml [2020-11-30 03:18:14,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:18:14,542 INFO L168 Benchmark]: Toolchain (without parser) took 13342.94 ms. Allocated memory was 127.9 MB in the beginning and 224.4 MB in the end (delta: 96.5 MB). Free memory was 100.5 MB in the beginning and 148.7 MB in the end (delta: -48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:18:14,543 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:18:14,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.13 ms. Allocated memory is still 127.9 MB. Free memory was 100.0 MB in the beginning and 105.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:18:14,544 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.74 ms. Allocated memory is still 127.9 MB. Free memory was 105.3 MB in the beginning and 103.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:18:14,545 INFO L168 Benchmark]: Boogie Preprocessor took 26.37 ms. Allocated memory is still 127.9 MB. Free memory was 103.7 MB in the beginning and 102.8 MB in the end (delta: 857.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:18:14,553 INFO L168 Benchmark]: RCFGBuilder took 690.75 ms. Allocated memory is still 127.9 MB. Free memory was 102.8 MB in the beginning and 82.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 03:18:14,553 INFO L168 Benchmark]: TraceAbstraction took 12174.24 ms. Allocated memory was 127.9 MB in the beginning and 224.4 MB in the end (delta: 96.5 MB). Free memory was 82.3 MB in the beginning and 151.8 MB in the end (delta: -69.5 MB). Peak memory consumption was 86.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:18:14,554 INFO L168 Benchmark]: Witness Printer took 86.48 ms. Allocated memory is still 224.4 MB. Free memory was 151.8 MB in the beginning and 148.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:18:14,557 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.13 ms. Allocated memory is still 127.9 MB. Free memory was 100.0 MB in the beginning and 105.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.74 ms. Allocated memory is still 127.9 MB. Free memory was 105.3 MB in the beginning and 103.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.37 ms. Allocated memory is still 127.9 MB. Free memory was 103.7 MB in the beginning and 102.8 MB in the end (delta: 857.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 690.75 ms. Allocated memory is still 127.9 MB. Free memory was 102.8 MB in the beginning and 82.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12174.24 ms. Allocated memory was 127.9 MB in the beginning and 224.4 MB in the end (delta: 96.5 MB). Free memory was 82.3 MB in the beginning and 151.8 MB in the end (delta: -69.5 MB). Peak memory consumption was 86.2 MB. Max. memory is 16.1 GB. * Witness Printer took 86.48 ms. Allocated memory is still 224.4 MB. Free memory was 151.8 MB in the beginning and 148.7 MB in the end (delta: 3.1 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: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: m <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.3s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 227 SDtfs, 437 SDslu, 945 SDs, 0 SdLazy, 1665 SolverSat, 202 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 390 GetRequests, 199 SyntacticMatches, 5 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 77 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 62 PreInvPairs, 63 NumberOfFragments, 170 HoareAnnotationTreeSize, 62 FomulaSimplifications, 99 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 653 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 41102 SizeOfPredicates, 25 NumberOfNonLiveVariables, 584 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 61/109 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...