./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/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 0.2.0-7b2dab5 [2020-12-09 04:33:36,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:33:36,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:33:36,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:33:36,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:33:36,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:33:36,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:33:36,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:33:36,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:33:36,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:33:36,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:33:36,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:33:36,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:33:36,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:33:36,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:33:36,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:33:36,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:33:36,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:33:36,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:33:36,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:33:36,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:33:36,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:33:36,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:33:36,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:33:36,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:33:36,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:33:36,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:33:36,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:33:36,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:33:36,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:33:36,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:33:36,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:33:36,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:33:36,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:33:36,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:33:36,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:33:36,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:33:36,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:33:36,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:33:36,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:33:36,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:33:36,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-09 04:33:36,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:33:36,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:33:36,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:33:36,691 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:33:36,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:33:36,692 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:33:36,692 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:33:36,692 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:33:36,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:33:36,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:33:36,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:33:36,693 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:33:36,693 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:33:36,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:33:36,693 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:33:36,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:33:36,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 04:33:36,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:33:36,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:33:36,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:33:36,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:33:36,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:33:36,695 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 04:33:36,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:33:36,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:33:36,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:33:36,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:33:36,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:33:36,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:33:36,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:33:36,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:33:36,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:33:36,697 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:33:36,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:33:36,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:33:36,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:33:36,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:33:36,697 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_d58d3411-b7de-4882-92a5-c0d5d487186b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 [2020-12-09 04:33:36,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:33:36,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:33:36,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:33:36,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:33:36,901 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:33:36,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2020-12-09 04:33:36,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/data/f8bd1f1ce/ec0fa901d5f74e0fbbc5c552b762080d/FLAG357d81d93 [2020-12-09 04:33:37,323 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:33:37,323 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2020-12-09 04:33:37,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/data/f8bd1f1ce/ec0fa901d5f74e0fbbc5c552b762080d/FLAG357d81d93 [2020-12-09 04:33:37,337 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/data/f8bd1f1ce/ec0fa901d5f74e0fbbc5c552b762080d [2020-12-09 04:33:37,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:33:37,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:33:37,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:33:37,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:33:37,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:33:37,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c40616c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37, skipping insertion in model container [2020-12-09 04:33:37,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:33:37,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:33:37,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:33:37,465 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:33:37,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:33:37,485 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:33:37,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37 WrapperNode [2020-12-09 04:33:37,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:33:37,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:33:37,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:33:37,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:33:37,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:33:37,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:33:37,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:33:37,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:33:37,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... [2020-12-09 04:33:37,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:33:37,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:33:37,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:33:37,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:33:37,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/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 [2020-12-09 04:33:37,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:33:37,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:33:37,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:33:37,699 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 04:33:37,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:33:37 BoogieIcfgContainer [2020-12-09 04:33:37,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:33:37,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:33:37,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:33:37,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:33:37,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:33:37" (1/3) ... [2020-12-09 04:33:37,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52da4ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:33:37, skipping insertion in model container [2020-12-09 04:33:37,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:33:37" (2/3) ... [2020-12-09 04:33:37,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52da4ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:33:37, skipping insertion in model container [2020-12-09 04:33:37,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:33:37" (3/3) ... [2020-12-09 04:33:37,708 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-loops.c [2020-12-09 04:33:37,718 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:33:37,720 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 04:33:37,727 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 04:33:37,744 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:33:37,744 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:33:37,744 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:33:37,744 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:33:37,744 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:33:37,744 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:33:37,744 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:33:37,744 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:33:37,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-09 04:33:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 04:33:37,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:37,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 04:33:37,758 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 04:33:37,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:37,762 INFO L82 PathProgramCache]: Analyzing trace with hash 29685419, now seen corresponding path program 1 times [2020-12-09 04:33:37,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:37,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497399994] [2020-12-09 04:33:37,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:37,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497399994] [2020-12-09 04:33:37,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:37,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:37,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834538190] [2020-12-09 04:33:37,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:37,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:37,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:37,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:37,883 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-12-09 04:33:37,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:37,911 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-12-09 04:33:37,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:37,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 04:33:37,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:37,918 INFO L225 Difference]: With dead ends: 17 [2020-12-09 04:33:37,918 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 04:33:37,920 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 [2020-12-09 04:33:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 04:33:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 04:33:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 04:33:37,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-12-09 04:33:37,942 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2020-12-09 04:33:37,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:37,942 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-12-09 04:33:37,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-09 04:33:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 04:33:37,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:37,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 04:33:37,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:33:37,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 04:33:37,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:37,944 INFO L82 PathProgramCache]: Analyzing trace with hash 920230376, now seen corresponding path program 1 times [2020-12-09 04:33:37,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:37,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61308743] [2020-12-09 04:33:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:37,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61308743] [2020-12-09 04:33:37,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:37,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:37,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824085963] [2020-12-09 04:33:37,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:37,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:37,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:37,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:37,965 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-12-09 04:33:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:37,984 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2020-12-09 04:33:37,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:37,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 04:33:37,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:37,991 INFO L225 Difference]: With dead ends: 20 [2020-12-09 04:33:37,991 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 04:33:37,991 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 [2020-12-09 04:33:37,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 04:33:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2020-12-09 04:33:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 04:33:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-12-09 04:33:37,995 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2020-12-09 04:33:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:37,995 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-12-09 04:33:37,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-12-09 04:33:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 04:33:37,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:37,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 04:33:37,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 04:33:37,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 04:33:37,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:37,996 INFO L82 PathProgramCache]: Analyzing trace with hash 920248058, now seen corresponding path program 1 times [2020-12-09 04:33:37,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:37,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315067531] [2020-12-09 04:33:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:38,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315067531] [2020-12-09 04:33:38,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:38,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:38,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088150021] [2020-12-09 04:33:38,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:38,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:38,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:38,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:38,015 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2020-12-09 04:33:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:38,027 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-12-09 04:33:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:38,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 04:33:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:38,028 INFO L225 Difference]: With dead ends: 15 [2020-12-09 04:33:38,029 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 04:33:38,029 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 [2020-12-09 04:33:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 04:33:38,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-12-09 04:33:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 04:33:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-12-09 04:33:38,032 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 6 [2020-12-09 04:33:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:38,032 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-12-09 04:33:38,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-12-09 04:33:38,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 04:33:38,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:38,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:38,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 04:33:38,033 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 04:33:38,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:38,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1537629357, now seen corresponding path program 1 times [2020-12-09 04:33:38,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:38,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394698367] [2020-12-09 04:33:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:38,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394698367] [2020-12-09 04:33:38,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:33:38,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:33:38,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643801963] [2020-12-09 04:33:38,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:33:38,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:38,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:33:38,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:33:38,053 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 3 states. [2020-12-09 04:33:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:38,063 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2020-12-09 04:33:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:33:38,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 04:33:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:38,064 INFO L225 Difference]: With dead ends: 14 [2020-12-09 04:33:38,064 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 04:33:38,064 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 [2020-12-09 04:33:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 04:33:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-12-09 04:33:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 04:33:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-12-09 04:33:38,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2020-12-09 04:33:38,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:38,067 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-12-09 04:33:38,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:33:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2020-12-09 04:33:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 04:33:38,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:38,067 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:38,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 04:33:38,068 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 04:33:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:38,068 INFO L82 PathProgramCache]: Analyzing trace with hash -193060491, now seen corresponding path program 1 times [2020-12-09 04:33:38,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:38,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062113383] [2020-12-09 04:33:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:38,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062113383] [2020-12-09 04:33:38,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840445904] [2020-12-09 04:33:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/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 [2020-12-09 04:33:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:38,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:33:38,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:33:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:38,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:33:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:33:38,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [43514399] [2020-12-09 04:33:38,225 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 04:33:38,225 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:33:38,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:33:38,234 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:33:38,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:33:38,357 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:33:38,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:33:38,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 10 [2020-12-09 04:33:38,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315070773] [2020-12-09 04:33:38,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 04:33:38,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:38,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 04:33:38,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-09 04:33:38,453 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand 7 states. [2020-12-09 04:33:38,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:38,554 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-12-09 04:33:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 04:33:38,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-12-09 04:33:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:38,555 INFO L225 Difference]: With dead ends: 34 [2020-12-09 04:33:38,555 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 04:33:38,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-09 04:33:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 04:33:38,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-12-09 04:33:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 04:33:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2020-12-09 04:33:38,559 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2020-12-09 04:33:38,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:38,559 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-12-09 04:33:38,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 04:33:38,559 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2020-12-09 04:33:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 04:33:38,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:33:38,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:33:38,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:33:38,761 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 04:33:38,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:33:38,762 INFO L82 PathProgramCache]: Analyzing trace with hash -31265154, now seen corresponding path program 1 times [2020-12-09 04:33:38,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:33:38,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739220938] [2020-12-09 04:33:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:33:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 04:33:38,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739220938] [2020-12-09 04:33:38,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521825196] [2020-12-09 04:33:38,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/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 [2020-12-09 04:33:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:33:38,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 04:33:38,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:33:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 04:33:38,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:33:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 04:33:38,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1973187469] [2020-12-09 04:33:38,982 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-12-09 04:33:38,983 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 04:33:38,983 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 04:33:38,983 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 04:33:38,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 04:33:39,090 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 04:33:39,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 04:33:39,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 6, 6] total 15 [2020-12-09 04:33:39,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195965488] [2020-12-09 04:33:39,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 04:33:39,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:33:39,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 04:33:39,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-12-09 04:33:39,240 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 8 states. [2020-12-09 04:33:39,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:33:39,467 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-12-09 04:33:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-09 04:33:39,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-12-09 04:33:39,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:33:39,467 INFO L225 Difference]: With dead ends: 36 [2020-12-09 04:33:39,467 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 04:33:39,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2020-12-09 04:33:39,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 04:33:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 04:33:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 04:33:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 04:33:39,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-09 04:33:39,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:33:39,469 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 04:33:39,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 04:33:39,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 04:33:39,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 04:33:39,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-09 04:33:39,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 04:33:39,760 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-12-09 04:33:39,760 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 04:33:39,760 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-12-09 04:33:39,761 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-09 04:33:39,761 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-12-09 04:33:39,761 INFO L262 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-12-09 04:33:39,761 INFO L262 CegarLoopResult]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2020-12-09 04:33:39,761 INFO L258 CegarLoopResult]: At program point L19-2(lines 19 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 1073741823) (<= 0 (+ ULTIMATE.start_main_~x~0 1)) (<= 0 (+ ULTIMATE.start_main_~y~0 2147483648)) (<= ULTIMATE.start_main_~x~0 1073741823) (<= 0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-12-09 04:33:39,761 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2020-12-09 04:33:39,761 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-12-09 04:33:39,761 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 04:33:39,761 INFO L262 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-12-09 04:33:39,761 INFO L258 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_~n~0) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-12-09 04:33:39,762 INFO L262 CegarLoopResult]: For program point L18(lines 18 28) no Hoare annotation was computed. [2020-12-09 04:33:39,762 INFO L265 CegarLoopResult]: At program point L18-1(lines 18 28) the Hoare annotation is: true [2020-12-09 04:33:39,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:33:39 BoogieIcfgContainer [2020-12-09 04:33:39,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:33:39,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:33:39,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:33:39,775 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:33:39,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:33:37" (3/4) ... [2020-12-09 04:33:39,777 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 04:33:39,782 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 04:33:39,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 04:33:39,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 04:33:39,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d58d3411-b7de-4882-92a5-c0d5d487186b/bin/utaipan/witness.graphml [2020-12-09 04:33:39,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:33:39,811 INFO L168 Benchmark]: Toolchain (without parser) took 2470.60 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.8 MB in the beginning and 81.2 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:33:39,812 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 96.5 MB. Free memory was 75.9 MB in the beginning and 75.8 MB in the end (delta: 72.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:33:39,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.64 ms. Allocated memory is still 96.5 MB. Free memory was 59.6 MB in the beginning and 74.2 MB in the end (delta: -14.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:39,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.29 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 72.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:33:39,813 INFO L168 Benchmark]: Boogie Preprocessor took 13.56 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:39,813 INFO L168 Benchmark]: RCFGBuilder took 178.74 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 60.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:39,814 INFO L168 Benchmark]: TraceAbstraction took 2071.89 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 60.3 MB in the beginning and 83.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:39,815 INFO L168 Benchmark]: Witness Printer took 35.32 ms. Allocated memory is still 117.4 MB. Free memory was 83.4 MB in the beginning and 81.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 04:33:39,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 96.5 MB. Free memory was 75.9 MB in the beginning and 75.8 MB in the end (delta: 72.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 144.64 ms. Allocated memory is still 96.5 MB. Free memory was 59.6 MB in the beginning and 74.2 MB in the end (delta: -14.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.29 ms. Allocated memory is still 96.5 MB. Free memory was 74.2 MB in the beginning and 72.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.56 ms. Allocated memory is still 96.5 MB. Free memory was 72.8 MB in the beginning and 71.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 178.74 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 60.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2071.89 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 60.3 MB in the beginning and 83.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. * Witness Printer took 35.32 ms. Allocated memory is still 117.4 MB. Free memory was 83.4 MB in the beginning and 81.2 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: 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 && 0 <= x + 1) && 0 <= y + 2147483648) && x <= 1073741823) && 0 <= n) && y <= 2147483647 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((n <= 1073741823 && 1 <= y) && x <= 1073741823) && 0 <= n) && 1 <= x) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 110 SDslu, 9 SDs, 0 SdLazy, 130 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s 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, 10 NumberOfFragments, 43 HoareAnnotationTreeSize, 3 FomulaSimplifications, 112 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 102 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s 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]: 242, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 44, TOOLS_POST_TIME[ms]: 56, 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: 44, TOOLS_QUANTIFIERELIM_TIME[ms]: 47, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 6, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 83, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 23, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME[ms]: 93, DOMAIN_ISSUBSETEQ_APPLICATIONS: 8, DOMAIN_ISSUBSETEQ_TIME[ms]: 9, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME[ms]: 12, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 142, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 142, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 8, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 10, DAG_COMPRESSION_PROCESSED_NODES: 174, DAG_COMPRESSION_RETAINED_NODES: 60, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...