./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c -s /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:53,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:53,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:53,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:53,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:53,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:53,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:53,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:53,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:53,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:53,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:53,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:53,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:53,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:53,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:53,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:53,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:53,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:53,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:53,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:53,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:53,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:53,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:53,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:53,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:53,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:53,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:53,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:53,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:53,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:53,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:53,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:53,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:53,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:53,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:53,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:53,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:53,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:53,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:53,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:53,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:53,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:40:53,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:53,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:53,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:53,890 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:53,890 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:53,891 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:53,891 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:53,892 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:53,892 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:53,892 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:53,892 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:53,893 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:53,893 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:53,893 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:53,894 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:53,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:53,895 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:40:53,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:53,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:53,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:53,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:53,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:53,896 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:40:53,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:53,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:53,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:53,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:53,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:53,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:53,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:53,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:53,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:53,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:53,900 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:53,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:53,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:53,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:53,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:53,901 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_160bcf0f-5d51-4f27-b8a5-c148d862b43a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 [2020-11-28 07:40:54,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:54,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:54,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:54,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:54,166 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:54,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2020-11-28 07:40:54,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/data/ddf33f5f2/a7bcfa7c39ce43e98dac0860e8f257a8/FLAGf60d6a6f8 [2020-11-28 07:40:54,836 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:54,837 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2020-11-28 07:40:54,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/data/ddf33f5f2/a7bcfa7c39ce43e98dac0860e8f257a8/FLAGf60d6a6f8 [2020-11-28 07:40:55,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/data/ddf33f5f2/a7bcfa7c39ce43e98dac0860e8f257a8 [2020-11-28 07:40:55,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:55,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:55,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:55,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:55,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:55,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f2a980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55, skipping insertion in model container [2020-11-28 07:40:55,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:55,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:55,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:55,480 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:55,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:55,511 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:55,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55 WrapperNode [2020-11-28 07:40:55,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:55,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:55,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:55,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:55,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:55,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:55,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:55,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:55,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... [2020-11-28 07:40:55,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:55,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:55,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:55,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:55,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:55,873 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:55,874 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 07:40:55,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:55 BoogieIcfgContainer [2020-11-28 07:40:55,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:55,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:55,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:55,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:55,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:55" (1/3) ... [2020-11-28 07:40:55,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1668f784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:55, skipping insertion in model container [2020-11-28 07:40:55,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:55" (2/3) ... [2020-11-28 07:40:55,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1668f784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:55, skipping insertion in model container [2020-11-28 07:40:55,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:55" (3/3) ... [2020-11-28 07:40:55,910 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-loops.c [2020-11-28 07:40:55,938 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:55,942 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:40:55,955 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:40:55,980 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:55,980 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:55,981 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:55,981 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:55,981 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:55,981 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:55,981 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:55,982 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:55,996 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-28 07:40:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:40:56,011 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:56,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:40:56,013 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:56,020 INFO L82 PathProgramCache]: Analyzing trace with hash 29685419, now seen corresponding path program 1 times [2020-11-28 07:40:56,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:56,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613133831] [2020-11-28 07:40:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:56,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613133831] [2020-11-28 07:40:56,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:56,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:56,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014800126] [2020-11-28 07:40:56,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:56,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:56,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:56,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:56,257 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-11-28 07:40:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:56,328 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-28 07:40:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:56,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:40:56,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:56,337 INFO L225 Difference]: With dead ends: 17 [2020-11-28 07:40:56,337 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 07:40:56,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:56,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 07:40:56,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 07:40:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:40:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-28 07:40:56,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2020-11-28 07:40:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:56,393 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-28 07:40:56,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-28 07:40:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:40:56,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:56,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:40:56,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:56,395 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:56,396 INFO L82 PathProgramCache]: Analyzing trace with hash 920230376, now seen corresponding path program 1 times [2020-11-28 07:40:56,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:56,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713435374] [2020-11-28 07:40:56,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:56,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713435374] [2020-11-28 07:40:56,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:56,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:56,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671547585] [2020-11-28 07:40:56,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:56,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:56,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:56,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:56,427 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-11-28 07:40:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:56,502 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-11-28 07:40:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:56,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:40:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:56,504 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:40:56,504 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 07:40:56,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 07:40:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2020-11-28 07:40:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 07:40:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-11-28 07:40:56,510 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2020-11-28 07:40:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:56,510 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-11-28 07:40:56,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:56,510 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-11-28 07:40:56,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:40:56,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:56,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:40:56,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:56,511 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:56,517 INFO L82 PathProgramCache]: Analyzing trace with hash 920248058, now seen corresponding path program 1 times [2020-11-28 07:40:56,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:56,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522734738] [2020-11-28 07:40:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:56,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522734738] [2020-11-28 07:40:56,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:56,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:56,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640751069] [2020-11-28 07:40:56,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:56,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:56,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:56,550 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2020-11-28 07:40:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:56,573 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-11-28 07:40:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:56,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:40:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:56,574 INFO L225 Difference]: With dead ends: 15 [2020-11-28 07:40:56,574 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 07:40:56,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:56,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 07:40:56,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-28 07:40:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:40:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-11-28 07:40:56,585 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 6 [2020-11-28 07:40:56,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:56,586 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-11-28 07:40:56,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:56,586 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-11-28 07:40:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:40:56,587 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:56,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:56,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:40:56,595 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:56,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:56,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1537629357, now seen corresponding path program 1 times [2020-11-28 07:40:56,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:56,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098380838] [2020-11-28 07:40:56,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:56,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098380838] [2020-11-28 07:40:56,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:56,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:56,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790975618] [2020-11-28 07:40:56,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:56,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:56,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:56,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:56,672 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 3 states. [2020-11-28 07:40:56,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:56,701 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2020-11-28 07:40:56,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:56,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 07:40:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:56,703 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:40:56,703 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:40:56,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:56,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:40:56,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-28 07:40:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:40:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-11-28 07:40:56,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2020-11-28 07:40:56,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:56,710 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-28 07:40:56,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2020-11-28 07:40:56,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:40:56,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:56,712 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:56,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:40:56,712 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:56,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:56,715 INFO L82 PathProgramCache]: Analyzing trace with hash -193060491, now seen corresponding path program 1 times [2020-11-28 07:40:56,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:56,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130849828] [2020-11-28 07:40:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:56,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130849828] [2020-11-28 07:40:56,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919224232] [2020-11-28 07:40:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:56,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:40:56,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:56,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:56,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2049911166] [2020-11-28 07:40:56,928 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-28 07:40:56,928 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:40:56,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:40:56,942 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:40:56,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:40:57,142 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:40:57,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:40:57,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 10 [2020-11-28 07:40:57,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309237065] [2020-11-28 07:40:57,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:40:57,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:57,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:40:57,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:40:57,317 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand 7 states. [2020-11-28 07:40:57,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:57,526 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-11-28 07:40:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:40:57,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-28 07:40:57,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:57,528 INFO L225 Difference]: With dead ends: 34 [2020-11-28 07:40:57,528 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 07:40:57,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:40:57,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 07:40:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-11-28 07:40:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:40:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2020-11-28 07:40:57,535 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2020-11-28 07:40:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:57,535 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-11-28 07:40:57,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:40:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2020-11-28 07:40:57,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:40:57,536 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:57,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:57,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:57,740 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:57,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:57,740 INFO L82 PathProgramCache]: Analyzing trace with hash -31265154, now seen corresponding path program 1 times [2020-11-28 07:40:57,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:57,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332732539] [2020-11-28 07:40:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:40:57,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332732539] [2020-11-28 07:40:57,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023421681] [2020-11-28 07:40:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/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 [2020-11-28 07:40:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:57,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:40:57,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:40:57,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:40:57,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1926935605] [2020-11-28 07:40:57,916 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-28 07:40:57,916 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:40:57,916 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:40:57,917 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:40:57,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:40:58,105 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:40:58,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:40:58,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 6, 6] total 15 [2020-11-28 07:40:58,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408276955] [2020-11-28 07:40:58,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:40:58,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:58,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:40:58,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:40:58,444 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 8 states. [2020-11-28 07:40:58,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:58,853 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-11-28 07:40:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 07:40:58,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-11-28 07:40:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:58,854 INFO L225 Difference]: With dead ends: 37 [2020-11-28 07:40:58,854 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:58,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-11-28 07:40:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:58,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:58,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-28 07:40:58,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:58,856 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:58,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:40:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:58,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:59,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 07:40:59,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:59,158 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-28 07:40:59,158 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:59,159 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-28 07:40:59,159 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 07:40:59,159 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-28 07:40:59,159 INFO L274 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-11-28 07:40:59,159 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2020-11-28 07:40:59,159 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 1073741823) (<= ULTIMATE.start_main_~x~0 1073741823) (<= 0 ULTIMATE.start_main_~n~0)) [2020-11-28 07:40:59,159 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-11-28 07:40:59,159 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-28 07:40:59,160 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:59,160 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-28 07:40:59,160 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 1073741823) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 1073741823) (<= 0 ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-11-28 07:40:59,160 INFO L274 CegarLoopResult]: For program point L18(lines 18 28) no Hoare annotation was computed. [2020-11-28 07:40:59,160 INFO L277 CegarLoopResult]: At program point L18-1(lines 18 28) the Hoare annotation is: true [2020-11-28 07:40:59,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:59 BoogieIcfgContainer [2020-11-28 07:40:59,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:59,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:59,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:59,178 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:59,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:55" (3/4) ... [2020-11-28 07:40:59,181 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:59,189 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:40:59,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:40:59,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:59,229 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_160bcf0f-5d51-4f27-b8a5-c148d862b43a/bin/utaipan/witness.graphml [2020-11-28 07:40:59,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:59,231 INFO L168 Benchmark]: Toolchain (without parser) took 3974.78 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 62.0 MB in the beginning and 61.2 MB in the end (delta: 805.7 kB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:59,232 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory was 30.9 MB in the beginning and 30.9 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:59,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.44 ms. Allocated memory is still 94.4 MB. Free memory was 61.8 MB in the beginning and 72.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:59,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.25 ms. Allocated memory is still 94.4 MB. Free memory was 72.7 MB in the beginning and 71.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:59,233 INFO L168 Benchmark]: Boogie Preprocessor took 19.06 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 70.5 MB in the end (delta: 762.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:59,234 INFO L168 Benchmark]: RCFGBuilder took 311.50 ms. Allocated memory is still 94.4 MB. Free memory was 70.5 MB in the beginning and 59.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:59,234 INFO L168 Benchmark]: TraceAbstraction took 3298.77 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 59.1 MB in the beginning and 64.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:59,235 INFO L168 Benchmark]: Witness Printer took 52.15 ms. Allocated memory is still 119.5 MB. Free memory was 64.3 MB in the beginning and 61.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:59,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory was 30.9 MB in the beginning and 30.9 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.44 ms. Allocated memory is still 94.4 MB. Free memory was 61.8 MB in the beginning and 72.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.25 ms. Allocated memory is still 94.4 MB. Free memory was 72.7 MB in the beginning and 71.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.06 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 70.5 MB in the end (delta: 762.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 311.50 ms. Allocated memory is still 94.4 MB. Free memory was 70.5 MB in the beginning and 59.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3298.77 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 59.1 MB in the beginning and 64.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * Witness Printer took 52.15 ms. Allocated memory is still 119.5 MB. Free memory was 64.3 MB in the beginning and 61.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (n <= 1073741823 && x <= 1073741823) && 0 <= n - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((n <= 1073741823 && 1 <= y) && x <= 1073741823) && 0 <= x) && 0 <= n) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 98 SDslu, 9 SDs, 0 SdLazy, 124 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 30 HoareAnnotationTreeSize, 3 FomulaSimplifications, 191 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 107 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 1684 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 8/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 404, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 41, TOOLS_POST_TIME[ms]: 49, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 41, TOOLS_QUANTIFIERELIM_TIME[ms]: 37, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 6, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 78, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 55, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 187, DOMAIN_ISSUBSETEQ_APPLICATIONS: 7, DOMAIN_ISSUBSETEQ_TIME[ms]: 19, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME[ms]: 27, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 241, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 240, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 7, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 18, DAG_COMPRESSION_PROCESSED_NODES: 174, DAG_COMPRESSION_RETAINED_NODES: 60, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...