./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI --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 ff3652fa62b489d4e6a4a85c8349c06d13bd2232 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:30:14,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:14,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:14,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:14,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:14,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:14,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:14,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:14,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:14,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:14,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:14,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:14,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:14,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:14,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:14,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:14,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:14,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:14,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:14,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:14,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:14,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:14,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:14,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:14,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:14,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:14,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:14,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:14,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:14,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:14,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:14,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:14,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:14,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:14,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:14,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:14,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:14,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:14,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:14,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:14,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:14,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:30:14,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:14,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:14,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:14,566 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:14,566 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:14,566 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:14,566 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:14,567 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:14,567 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:14,567 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:14,567 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:14,567 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:14,568 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:14,568 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:14,568 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:14,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:14,569 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:30:14,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:14,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:14,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:14,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:14,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:14,571 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:30:14,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:14,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:14,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:14,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:14,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:14,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:14,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:14,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:14,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:14,573 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:14,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:14,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:14,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:14,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:14,574 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_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2021-10-11 02:30:14,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:14,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:14,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:14,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:14,893 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:14,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-10-11 02:30:14,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/data/e7779feed/74eb02f10c2a444ab74538544ac21fd5/FLAG89ab2985d [2021-10-11 02:30:15,370 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:15,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-10-11 02:30:15,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/data/e7779feed/74eb02f10c2a444ab74538544ac21fd5/FLAG89ab2985d [2021-10-11 02:30:15,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/data/e7779feed/74eb02f10c2a444ab74538544ac21fd5 [2021-10-11 02:30:15,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:15,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:15,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:15,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:15,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:15,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55994573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15, skipping insertion in model container [2021-10-11 02:30:15,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:15,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:15,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:15,625 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:15,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:15,665 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:15,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15 WrapperNode [2021-10-11 02:30:15,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:15,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:15,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:15,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:15,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:15,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:15,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:15,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:15,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... [2021-10-11 02:30:15,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:15,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:15,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:15,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:15,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:30:15,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:16,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:16,019 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 02:30:16,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:16 BoogieIcfgContainer [2021-10-11 02:30:16,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:16,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:16,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:16,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:16,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:15" (1/3) ... [2021-10-11 02:30:16,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4b4f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:16, skipping insertion in model container [2021-10-11 02:30:16,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:15" (2/3) ... [2021-10-11 02:30:16,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4b4f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:16, skipping insertion in model container [2021-10-11 02:30:16,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:16" (3/3) ... [2021-10-11 02:30:16,029 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2021-10-11 02:30:16,043 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:16,046 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:30:16,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:30:16,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:16,110 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:16,111 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:16,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:16,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:16,111 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:16,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:16,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 02:30:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:30:16,128 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:16,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:30:16,132 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:16,137 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-11 02:30:16,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:16,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195728238] [2021-10-11 02:30:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:16,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195728238] [2021-10-11 02:30:16,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:16,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:16,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890760663] [2021-10-11 02:30:16,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:16,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:16,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:16,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:16,318 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2021-10-11 02:30:16,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:16,358 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-11 02:30:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:16,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:30:16,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:16,368 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:30:16,368 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:30:16,371 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 [2021-10-11 02:30:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:30:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-10-11 02:30:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:30:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-11 02:30:16,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 4 [2021-10-11 02:30:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:16,403 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-11 02:30:16,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-11 02:30:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:30:16,404 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:16,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:30:16,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:16,405 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:16,406 INFO L82 PathProgramCache]: Analyzing trace with hash 964251, now seen corresponding path program 1 times [2021-10-11 02:30:16,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:16,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67403251] [2021-10-11 02:30:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:16,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67403251] [2021-10-11 02:30:16,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:16,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:30:16,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812469504] [2021-10-11 02:30:16,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:16,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:16,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:16,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:16,433 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2021-10-11 02:30:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:16,448 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-11 02:30:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:16,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:30:16,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:16,449 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:30:16,449 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 02:30:16,450 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 [2021-10-11 02:30:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 02:30:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-11 02:30:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:30:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-11 02:30:16,454 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2021-10-11 02:30:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:16,455 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-11 02:30:16,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-10-11 02:30:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:30:16,455 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:16,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:30:16,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:30:16,456 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:16,457 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-11 02:30:16,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:16,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083672444] [2021-10-11 02:30:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:16,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083672444] [2021-10-11 02:30:16,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:16,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:16,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564654952] [2021-10-11 02:30:16,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:16,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:16,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:16,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:16,483 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2021-10-11 02:30:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:16,497 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-11 02:30:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:16,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:30:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:16,498 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:30:16,498 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 02:30:16,499 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 [2021-10-11 02:30:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 02:30:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-11 02:30:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:30:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-11 02:30:16,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2021-10-11 02:30:16,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:16,503 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-11 02:30:16,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:16,503 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-11 02:30:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:30:16,504 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:16,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:30:16,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:30:16,505 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:16,505 INFO L82 PathProgramCache]: Analyzing trace with hash 29891841, now seen corresponding path program 1 times [2021-10-11 02:30:16,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:16,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208207274] [2021-10-11 02:30:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:16,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208207274] [2021-10-11 02:30:16,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:16,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:16,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702254698] [2021-10-11 02:30:16,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:16,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:16,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:16,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:16,529 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2021-10-11 02:30:16,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:16,540 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2021-10-11 02:30:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:16,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:30:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:16,542 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:30:16,542 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:30:16,543 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 [2021-10-11 02:30:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:30:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:30:16,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:30:16,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-11 02:30:16,546 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2021-10-11 02:30:16,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:16,547 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-11 02:30:16,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-11 02:30:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:30:16,548 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:16,548 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 02:30:16,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:30:16,548 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2021-10-11 02:30:16,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:16,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483307924] [2021-10-11 02:30:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:16,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483307924] [2021-10-11 02:30:16,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248060779] [2021-10-11 02:30:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:30:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:16,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:30:16,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:16,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:16,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1049071616] [2021-10-11 02:30:16,760 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:30:16,760 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:16,767 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:30:16,772 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:30:16,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:30:17,042 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:30:17,179 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:17,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:30:17,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-10-11 02:30:17,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200656759] [2021-10-11 02:30:17,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:30:17,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:17,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:30:17,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:30:17,183 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 6 states. [2021-10-11 02:30:17,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:17,244 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-10-11 02:30:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:17,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2021-10-11 02:30:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:17,248 INFO L225 Difference]: With dead ends: 32 [2021-10-11 02:30:17,249 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:30:17,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:30:17,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:30:17,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2021-10-11 02:30:17,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:30:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-10-11 02:30:17,257 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 7 [2021-10-11 02:30:17,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:17,257 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-10-11 02:30:17,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:30:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-10-11 02:30:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:30:17,258 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:17,258 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2021-10-11 02:30:17,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:17,483 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:17,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:17,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1477250187, now seen corresponding path program 2 times [2021-10-11 02:30:17,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:17,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922201477] [2021-10-11 02:30:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:30:17,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922201477] [2021-10-11 02:30:17,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937524366] [2021-10-11 02:30:17,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:30:17,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-11 02:30:17,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:30:17,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:30:17,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:30:17,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-11 02:30:17,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [272710077] [2021-10-11 02:30:17,627 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:30:17,627 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:17,633 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:30:17,634 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:30:17,634 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:30:17,739 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:30:17,847 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:17,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:30:17,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2021-10-11 02:30:17,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899078133] [2021-10-11 02:30:17,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:17,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:17,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:17,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:30:17,852 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 4 states. [2021-10-11 02:30:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:17,889 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-10-11 02:30:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:17,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:30:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:17,890 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:30:17,890 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:30:17,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:30:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:30:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:30:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:30:17,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:30:17,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:30:17,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:17,892 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:30:17,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:17,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:30:17,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:30:18,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-11 02:30:18,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:30:18,129 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:30:18,130 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:30:18,130 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 02:30:18,130 INFO L258 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~x~0)) [2021-10-11 02:30:18,131 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2021-10-11 02:30:18,131 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-11 02:30:18,131 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-11 02:30:18,131 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 02:30:18,132 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:30:18,132 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-11 02:30:18,132 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-11 02:30:18,132 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-11 02:30:18,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:18 BoogieIcfgContainer [2021-10-11 02:30:18,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:18,152 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:18,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:18,153 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:18,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:16" (3/4) ... [2021-10-11 02:30:18,156 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:30:18,167 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:30:18,168 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:30:18,168 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:30:18,212 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbc67fa7-3e80-4e4b-ab58-7cade2813a1f/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:18,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:18,214 INFO L168 Benchmark]: Toolchain (without parser) took 2813.48 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 59.8 MB in the beginning and 72.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:18,215 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.5 MB in the beginning and 64.4 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:18,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.33 ms. Allocated memory is still 94.4 MB. Free memory was 59.6 MB in the beginning and 70.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:18,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.22 ms. Allocated memory is still 94.4 MB. Free memory was 70.1 MB in the beginning and 68.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:18,217 INFO L168 Benchmark]: Boogie Preprocessor took 16.97 ms. Allocated memory is still 94.4 MB. Free memory was 68.8 MB in the beginning and 67.9 MB in the end (delta: 894.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:18,222 INFO L168 Benchmark]: RCFGBuilder took 301.29 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 56.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:18,223 INFO L168 Benchmark]: TraceAbstraction took 2128.68 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 56.6 MB in the beginning and 74.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:18,223 INFO L168 Benchmark]: Witness Printer took 59.98 ms. Allocated memory is still 115.3 MB. Free memory was 74.7 MB in the beginning and 72.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:18,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.5 MB in the beginning and 64.4 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.33 ms. Allocated memory is still 94.4 MB. Free memory was 59.6 MB in the beginning and 70.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.22 ms. Allocated memory is still 94.4 MB. Free memory was 70.1 MB in the beginning and 68.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.97 ms. Allocated memory is still 94.4 MB. Free memory was 68.8 MB in the beginning and 67.9 MB in the end (delta: 894.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 301.29 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 56.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2128.68 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 56.6 MB in the beginning and 74.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Witness Printer took 59.98 ms. Allocated memory is still 115.3 MB. Free memory was 74.7 MB in the beginning and 72.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 20]: 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: x <= 2147483647 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= y && x <= 2147483647) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 50 SDslu, 13 SDs, 0 SdLazy, 67 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 207 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 64 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 2441 SizeOfPredicates, 2 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 66/84 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...