./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c -s /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/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 fce4ad715fa5546a587c43eb09d1a8cb5dcde607 ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:35:48,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:35:48,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:35:48,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:35:48,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:35:48,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:35:48,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:35:48,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:35:48,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:35:48,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:35:48,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:35:48,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:35:48,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:35:48,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:35:48,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:35:48,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:35:48,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:35:48,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:35:48,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:35:48,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:35:48,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:35:48,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:35:48,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:35:48,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:35:48,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:35:48,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:35:48,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:35:48,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:35:48,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:35:48,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:35:48,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:35:48,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:35:48,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:35:48,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:35:48,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:35:48,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:35:48,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:35:48,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:35:48,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:35:48,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:35:48,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:35:48,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-03 12:35:48,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:35:48,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:35:48,385 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:35:48,386 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:35:48,386 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:35:48,386 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:35:48,387 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:35:48,387 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:35:48,388 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:35:48,388 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:35:48,388 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:35:48,389 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:35:48,389 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:35:48,390 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:35:48,390 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:35:48,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:35:48,391 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:35:48,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:35:48,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:35:48,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:35:48,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:35:48,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:35:48,393 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:35:48,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:35:48,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:35:48,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:35:48,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:35:48,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:35:48,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:48,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:35:48,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:35:48,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:35:48,396 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:35:48,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:35:48,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:35:48,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:35:48,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:35:48,397 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_03f93c1a-3654-4bf8-bdbd-5256734de28f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fce4ad715fa5546a587c43eb09d1a8cb5dcde607 [2020-12-03 12:35:48,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:35:48,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:35:48,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:35:48,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:35:48,744 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:35:48,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2020-12-03 12:35:48,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/data/9e0fcf674/c025d092e2c540728e727faa8d8536a7/FLAG04368da59 [2020-12-03 12:35:49,276 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:35:49,276 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2020-12-03 12:35:49,287 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/data/9e0fcf674/c025d092e2c540728e727faa8d8536a7/FLAG04368da59 [2020-12-03 12:35:49,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/data/9e0fcf674/c025d092e2c540728e727faa8d8536a7 [2020-12-03 12:35:49,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:35:49,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:35:49,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:49,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:35:49,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:35:49,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dcaf396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49, skipping insertion in model container [2020-12-03 12:35:49,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:35:49,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:35:49,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:49,855 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:35:49,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:49,882 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:35:49,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49 WrapperNode [2020-12-03 12:35:49,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:49,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:49,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:35:49,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:35:49,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:49,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:35:49,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:35:49,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:35:49,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... [2020-12-03 12:35:49,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:35:49,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:35:49,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:35:49,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:35:49,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/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 [2020-12-03 12:35:50,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:35:50,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:35:50,254 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:35:50,255 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-03 12:35:50,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:50 BoogieIcfgContainer [2020-12-03 12:35:50,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:35:50,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:35:50,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:35:50,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:35:50,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:35:49" (1/3) ... [2020-12-03 12:35:50,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594befa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:50, skipping insertion in model container [2020-12-03 12:35:50,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:49" (2/3) ... [2020-12-03 12:35:50,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594befa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:50, skipping insertion in model container [2020-12-03 12:35:50,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:50" (3/3) ... [2020-12-03 12:35:50,267 INFO L111 eAbstractionObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2020-12-03 12:35:50,283 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:35:50,286 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-03 12:35:50,299 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-03 12:35:50,324 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:35:50,324 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:35:50,325 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:35:50,325 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:35:50,325 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:35:50,325 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:35:50,325 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:35:50,326 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:35:50,340 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-03 12:35:50,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:35:50,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:35:50,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:35:50,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,352 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-12-03 12:35:50,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155729184] [2020-12-03 12:35:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:50,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155729184] [2020-12-03 12:35:50,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:50,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-03 12:35:50,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852008338] [2020-12-03 12:35:50,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:50,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:50,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:50,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:50,526 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-12-03 12:35:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:50,569 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-12-03 12:35:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:50,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-03 12:35:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:50,579 INFO L225 Difference]: With dead ends: 13 [2020-12-03 12:35:50,579 INFO L226 Difference]: Without dead ends: 11 [2020-12-03 12:35:50,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-03 12:35:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-03 12:35:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-03 12:35:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-12-03 12:35:50,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-12-03 12:35:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:50,661 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-12-03 12:35:50,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:50,662 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-12-03 12:35:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:35:50,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:35:50,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:35:50,663 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:35:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,664 INFO L82 PathProgramCache]: Analyzing trace with hash 29869546, now seen corresponding path program 1 times [2020-12-03 12:35:50,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583793681] [2020-12-03 12:35:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:50,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583793681] [2020-12-03 12:35:50,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:50,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-03 12:35:50,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786539866] [2020-12-03 12:35:50,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:50,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:50,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:50,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:50,699 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2020-12-03 12:35:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:50,739 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-12-03 12:35:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:50,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-03 12:35:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:50,740 INFO L225 Difference]: With dead ends: 11 [2020-12-03 12:35:50,740 INFO L226 Difference]: Without dead ends: 10 [2020-12-03 12:35:50,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-03 12:35:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-03 12:35:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-03 12:35:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-12-03 12:35:50,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2020-12-03 12:35:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:50,745 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-12-03 12:35:50,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-12-03 12:35:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:35:50,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:35:50,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:35:50,746 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:35:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-12-03 12:35:50,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125055685] [2020-12-03 12:35:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:50,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125055685] [2020-12-03 12:35:50,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:50,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:35:50,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589153057] [2020-12-03 12:35:50,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:50,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:50,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:50,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:50,794 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 3 states. [2020-12-03 12:35:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:50,817 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-12-03 12:35:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:50,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-03 12:35:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:50,819 INFO L225 Difference]: With dead ends: 11 [2020-12-03 12:35:50,819 INFO L226 Difference]: Without dead ends: 10 [2020-12-03 12:35:50,820 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 [2020-12-03 12:35:50,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-03 12:35:50,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-12-03 12:35:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-03 12:35:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2020-12-03 12:35:50,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 [2020-12-03 12:35:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:50,823 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-12-03 12:35:50,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2020-12-03 12:35:50,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:35:50,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:50,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-03 12:35:50,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:35:50,824 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:35:50,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:50,825 INFO L82 PathProgramCache]: Analyzing trace with hash 925955982, now seen corresponding path program 1 times [2020-12-03 12:35:50,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:50,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855229778] [2020-12-03 12:35:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:35:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:35:50,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855229778] [2020-12-03 12:35:50,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:35:50,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:35:50,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473392908] [2020-12-03 12:35:50,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:35:50,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:35:50,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:35:50,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:35:50,889 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 3 states. [2020-12-03 12:35:50,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:35:50,918 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2020-12-03 12:35:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:35:50,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-03 12:35:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:35:50,925 INFO L225 Difference]: With dead ends: 10 [2020-12-03 12:35:50,925 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:35:50,925 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 [2020-12-03 12:35:50,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:35:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:35:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:35:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:35:50,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-12-03 12:35:50,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:35:50,927 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:35:50,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:35:50,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:35:50,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:35:50,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-03 12:35:50,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:35:50,952 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-12-03 12:35:50,953 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:35:50,953 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-03 12:35:50,953 INFO L262 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-12-03 12:35:50,953 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-03 12:35:50,954 INFO L258 CegarLoopResult]: At program point L21-2(lines 17 25) the Hoare annotation is: (and (<= ULTIMATE.start_main_~p~0 2147483647) (<= ULTIMATE.start_main_~q~0 2147483647)) [2020-12-03 12:35:50,954 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-03 12:35:50,954 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-12-03 12:35:50,955 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-03 12:35:50,955 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:35:50,955 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-03 12:35:50,955 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-12-03 12:35:50,955 INFO L262 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2020-12-03 12:35:50,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:35:50 BoogieIcfgContainer [2020-12-03 12:35:50,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:35:50,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:35:50,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:35:50,972 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:35:50,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:50" (3/4) ... [2020-12-03 12:35:50,975 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:35:50,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-03 12:35:50,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-03 12:35:50,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:35:51,021 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_03f93c1a-3654-4bf8-bdbd-5256734de28f/bin/utaipan/witness.graphml [2020-12-03 12:35:51,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:35:51,023 INFO L168 Benchmark]: Toolchain (without parser) took 1373.15 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 60.1 MB in the beginning and 85.7 MB in the end (delta: -25.7 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,024 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory was 76.3 MB in the beginning and 76.3 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:51,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.19 ms. Allocated memory is still 96.5 MB. Free memory was 59.9 MB in the beginning and 51.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.71 ms. Allocated memory is still 96.5 MB. Free memory was 51.4 MB in the beginning and 50.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,026 INFO L168 Benchmark]: Boogie Preprocessor took 18.32 ms. Allocated memory is still 96.5 MB. Free memory was 50.2 MB in the beginning and 49.2 MB in the end (delta: 910.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:51,027 INFO L168 Benchmark]: RCFGBuilder took 323.36 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 49.2 MB in the beginning and 101.0 MB in the end (delta: -51.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,034 INFO L168 Benchmark]: TraceAbstraction took 711.28 ms. Allocated memory is still 130.0 MB. Free memory was 100.7 MB in the beginning and 87.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,034 INFO L168 Benchmark]: Witness Printer took 50.05 ms. Allocated memory is still 130.0 MB. Free memory was 87.9 MB in the beginning and 85.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:51,037 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 96.5 MB. Free memory was 76.3 MB in the beginning and 76.3 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.19 ms. Allocated memory is still 96.5 MB. Free memory was 59.9 MB in the beginning and 51.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.71 ms. Allocated memory is still 96.5 MB. Free memory was 51.4 MB in the beginning and 50.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.32 ms. Allocated memory is still 96.5 MB. Free memory was 50.2 MB in the beginning and 49.2 MB in the end (delta: 910.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 323.36 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 49.2 MB in the beginning and 101.0 MB in the end (delta: -51.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 711.28 ms. Allocated memory is still 130.0 MB. Free memory was 100.7 MB in the beginning and 87.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Witness Printer took 50.05 ms. Allocated memory is still 130.0 MB. Free memory was 87.9 MB in the beginning and 85.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: 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: 17]: Loop Invariant Derived loop invariant: p <= 2147483647 && q <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 27 SDslu, 0 SDs, 0 SdLazy, 35 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...