./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.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_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/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_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/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_9cd295ee-fc91-478f-bc17-8cad87e57bfd/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 b51d3ff9a76866bd9c6637bca261a8433dd4524e ................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:26,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:26,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:26,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:26,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:26,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:26,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:26,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:26,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:26,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:26,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:26,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:26,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:26,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:26,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:26,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:26,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:26,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:26,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:26,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:26,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:26,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:26,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:26,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:26,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:26,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:26,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:26,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:26,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:26,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:26,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:26,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:26,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:26,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:26,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:26,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:26,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:26,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:26,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:26,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:26,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:26,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:27:26,572 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:26,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:26,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:26,574 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:26,574 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:26,574 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:26,575 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:26,575 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:26,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:26,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:26,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:26,577 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:26,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:26,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:26,577 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:26,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:26,579 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:26,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:26,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:26,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:26,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:26,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:26,580 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:27:26,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:26,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:26,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:26,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:26,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:26,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:26,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:26,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:26,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:26,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:26,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:26,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:26,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:26,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:26,585 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_9cd295ee-fc91-478f-bc17-8cad87e57bfd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51d3ff9a76866bd9c6637bca261a8433dd4524e [2021-10-11 02:27:26,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:26,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:26,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:26,882 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:26,883 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:26,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2021-10-11 02:27:26,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI/data/eb9d24872/2569fb1c32644d73a9a72c202926356f/FLAG5518bd0db [2021-10-11 02:27:27,425 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:27,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2021-10-11 02:27:27,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI/data/eb9d24872/2569fb1c32644d73a9a72c202926356f/FLAG5518bd0db [2021-10-11 02:27:27,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI/data/eb9d24872/2569fb1c32644d73a9a72c202926356f [2021-10-11 02:27:27,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:27,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:27,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:27,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:27,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:27,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:27" (1/1) ... [2021-10-11 02:27:27,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34315a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:27, skipping insertion in model container [2021-10-11 02:27:27,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:27" (1/1) ... [2021-10-11 02:27:27,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:27,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:28,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:28,008 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:28,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:28,033 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:28,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28 WrapperNode [2021-10-11 02:27:28,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:28,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:28,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:28,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:28,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... [2021-10-11 02:27:28,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... [2021-10-11 02:27:28,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:28,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:28,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:28,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:28,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... [2021-10-11 02:27:28,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... [2021-10-11 02:27:28,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... [2021-10-11 02:27:28,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... [2021-10-11 02:27:28,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... [2021-10-11 02:27:28,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... [2021-10-11 02:27:28,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... [2021-10-11 02:27:28,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:28,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:28,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:28,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:28,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/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 02:27:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:28,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:28,443 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:27:28,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:28 BoogieIcfgContainer [2021-10-11 02:27:28,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:28,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:28,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:28,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:28,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:27" (1/3) ... [2021-10-11 02:27:28,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f1ce8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:28, skipping insertion in model container [2021-10-11 02:27:28,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:28" (2/3) ... [2021-10-11 02:27:28,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f1ce8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:28, skipping insertion in model container [2021-10-11 02:27:28,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:28" (3/3) ... [2021-10-11 02:27:28,470 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2021-10-11 02:27:28,500 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:28,503 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:27:28,513 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:27:28,546 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:28,546 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:28,547 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:28,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:28,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:28,547 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:28,547 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:28,547 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-10-11 02:27:28,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:27:28,567 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:28,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:27:28,568 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:28,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:28,574 INFO L82 PathProgramCache]: Analyzing trace with hash 963948, now seen corresponding path program 1 times [2021-10-11 02:27:28,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:28,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807284096] [2021-10-11 02:27:28,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:28,728 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 02:27:28,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807284096] [2021-10-11 02:27:28,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:28,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:28,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070937635] [2021-10-11 02:27:28,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:28,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:28,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:28,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:28,751 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2021-10-11 02:27:28,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:28,768 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-10-11 02:27:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:28,769 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2021-10-11 02:27:28,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:28,778 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:27:28,778 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:27:28,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:27:28,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:27:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:27:28,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-11 02:27:28,815 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 4 [2021-10-11 02:27:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:28,816 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-11 02:27:28,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-11 02:27:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:28,817 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:28,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:28,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:28,818 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:28,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:28,821 INFO L82 PathProgramCache]: Analyzing trace with hash 29923435, now seen corresponding path program 1 times [2021-10-11 02:27:28,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:28,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99524131] [2021-10-11 02:27:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:28,891 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 02:27:28,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99524131] [2021-10-11 02:27:28,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:28,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:28,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816930995] [2021-10-11 02:27:28,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:28,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:28,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:28,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:28,896 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2021-10-11 02:27:28,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:28,911 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-10-11 02:27:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:28,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:27:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:28,913 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:27:28,913 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:27:28,914 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 02:27:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:27:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:27:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:27:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-11 02:27:28,918 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2021-10-11 02:27:28,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:28,919 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-11 02:27:28,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-11 02:27:28,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:28,920 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:28,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:28,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:28,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:28,922 INFO L82 PathProgramCache]: Analyzing trace with hash 29923490, now seen corresponding path program 1 times [2021-10-11 02:27:28,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:28,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262014588] [2021-10-11 02:27:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:28,955 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 02:27:28,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262014588] [2021-10-11 02:27:28,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:28,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:28,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885723039] [2021-10-11 02:27:28,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:28,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:28,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:28,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:28,961 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2021-10-11 02:27:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:29,023 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-10-11 02:27:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:29,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:27:29,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:29,024 INFO L225 Difference]: With dead ends: 30 [2021-10-11 02:27:29,024 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:27:29,025 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 02:27:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:27:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-10-11 02:27:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:27:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-10-11 02:27:29,032 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 5 [2021-10-11 02:27:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:29,032 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-10-11 02:27:29,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:29,033 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-10-11 02:27:29,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:29,033 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:29,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:29,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:29,034 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash 927626552, now seen corresponding path program 1 times [2021-10-11 02:27:29,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:29,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657095026] [2021-10-11 02:27:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:29,062 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 02:27:29,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657095026] [2021-10-11 02:27:29,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:29,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:29,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335597491] [2021-10-11 02:27:29,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:29,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:29,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:29,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:29,065 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 3 states. [2021-10-11 02:27:29,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:29,075 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2021-10-11 02:27:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:29,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:27:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:29,076 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:27:29,077 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:27:29,077 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 02:27:29,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:27:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-11 02:27:29,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:27:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-10-11 02:27:29,083 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 6 [2021-10-11 02:27:29,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:29,083 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-10-11 02:27:29,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:29,083 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-10-11 02:27:29,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:29,084 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:29,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:29,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:29,085 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:29,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:29,085 INFO L82 PathProgramCache]: Analyzing trace with hash 927628250, now seen corresponding path program 1 times [2021-10-11 02:27:29,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:29,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309777367] [2021-10-11 02:27:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:29,164 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 02:27:29,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309777367] [2021-10-11 02:27:29,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:29,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:29,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998894488] [2021-10-11 02:27:29,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:29,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:29,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:29,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:29,167 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 4 states. [2021-10-11 02:27:29,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:29,208 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-10-11 02:27:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:29,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:27:29,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:29,210 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:27:29,210 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 02:27:29,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 02:27:29,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-11 02:27:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 02:27:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-11 02:27:29,215 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2021-10-11 02:27:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:29,216 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-11 02:27:29,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-11 02:27:29,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:29,216 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:29,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:29,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:27:29,217 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:29,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:29,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1103127887, now seen corresponding path program 1 times [2021-10-11 02:27:29,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:29,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598417208] [2021-10-11 02:27:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:29,233 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:29,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:29,260 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:27:29,261 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:29,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:27:29,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:29 BoogieIcfgContainer [2021-10-11 02:27:29,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:29,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:29,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:29,279 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:29,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:28" (3/4) ... [2021-10-11 02:27:29,281 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:27:29,314 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd295ee-fc91-478f-bc17-8cad87e57bfd/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:29,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:29,316 INFO L168 Benchmark]: Toolchain (without parser) took 1516.45 ms. Allocated memory is still 142.6 MB. Free memory was 111.0 MB in the beginning and 106.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:29,316 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 43.6 MB in the beginning and 43.5 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:29,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.49 ms. Allocated memory is still 142.6 MB. Free memory was 111.0 MB in the beginning and 118.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:29,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.05 ms. Allocated memory is still 142.6 MB. Free memory was 118.3 MB in the beginning and 117.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:29,318 INFO L168 Benchmark]: Boogie Preprocessor took 20.25 ms. Allocated memory is still 142.6 MB. Free memory was 117.0 MB in the beginning and 116.2 MB in the end (delta: 766.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:29,319 INFO L168 Benchmark]: RCFGBuilder took 357.28 ms. Allocated memory is still 142.6 MB. Free memory was 116.2 MB in the beginning and 101.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:29,320 INFO L168 Benchmark]: TraceAbstraction took 830.14 ms. Allocated memory is still 142.6 MB. Free memory was 100.6 MB in the beginning and 107.5 MB in the end (delta: -6.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:29,320 INFO L168 Benchmark]: Witness Printer took 35.61 ms. Allocated memory is still 142.6 MB. Free memory was 107.5 MB in the beginning and 106.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:29,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 43.6 MB in the beginning and 43.5 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.49 ms. Allocated memory is still 142.6 MB. Free memory was 111.0 MB in the beginning and 118.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.05 ms. Allocated memory is still 142.6 MB. Free memory was 118.3 MB in the beginning and 117.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.25 ms. Allocated memory is still 142.6 MB. Free memory was 117.0 MB in the beginning and 116.2 MB in the end (delta: 766.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 357.28 ms. Allocated memory is still 142.6 MB. Free memory was 116.2 MB in the beginning and 101.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 830.14 ms. Allocated memory is still 142.6 MB. Free memory was 100.6 MB in the beginning and 107.5 MB in the end (delta: -6.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 35.61 ms. Allocated memory is still 142.6 MB. Free memory was 107.5 MB in the beginning and 106.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y, n; [L15] n = __VERIFIER_nondet_int() [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] COND TRUE x >= 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] COND FALSE !(y >= 0 && __VERIFIER_nondet_int() != 0) [L22] EXPR x - 1 [L22] x = x - 1 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] COND TRUE y <= n && __VERIFIER_nondet_int() != 0 [L24] y + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 33 SDslu, 25 SDs, 0 SdLazy, 44 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...