./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:04:21,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:04:21,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:04:21,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:04:21,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:04:21,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:04:21,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:04:21,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:04:21,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:04:21,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:04:21,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:04:21,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:04:21,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:04:21,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:04:21,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:04:21,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:04:21,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:04:21,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:04:21,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:04:21,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:04:21,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:04:21,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:04:21,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:04:21,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:04:21,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:04:21,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:04:21,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:04:21,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:04:21,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:04:21,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:04:21,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:04:21,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:04:21,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:04:21,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:04:21,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:04:21,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:04:21,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:04:21,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:04:21,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:04:21,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:04:21,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:04:21,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-30 02:04:21,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:04:21,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:04:21,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:04:21,559 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:04:21,560 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:04:21,560 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:04:21,561 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:04:21,561 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:04:21,562 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:04:21,562 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:04:21,563 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:04:21,563 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:04:21,564 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:04:21,564 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:04:21,565 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:04:21,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:04:21,566 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:04:21,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:04:21,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:04:21,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:04:21,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:04:21,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:04:21,568 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:04:21,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:04:21,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:04:21,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:04:21,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:04:21,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:04:21,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:04:21,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:04:21,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:04:21,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:04:21,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:04:21,571 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:04:21,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:04:21,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:04:21,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:04:21,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:04:21,573 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 [2020-11-30 02:04:21,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:04:21,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:04:21,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:04:21,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:04:21,976 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:04:21,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2020-11-30 02:04:22,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/data/59a62f67b/d159114dc5f349e79bee5f6202347e9f/FLAG35ffc9b78 [2020-11-30 02:04:22,682 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:04:22,682 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2020-11-30 02:04:22,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/data/59a62f67b/d159114dc5f349e79bee5f6202347e9f/FLAG35ffc9b78 [2020-11-30 02:04:23,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/data/59a62f67b/d159114dc5f349e79bee5f6202347e9f [2020-11-30 02:04:23,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:04:23,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:04:23,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:04:23,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:04:23,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:04:23,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64506d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23, skipping insertion in model container [2020-11-30 02:04:23,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:04:23,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:04:23,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:04:23,404 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:04:23,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:04:23,459 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:04:23,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23 WrapperNode [2020-11-30 02:04:23,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:04:23,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:04:23,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:04:23,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:04:23,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:04:23,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:04:23,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:04:23,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:04:23,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... [2020-11-30 02:04:23,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:04:23,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:04:23,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:04:23,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:04:23,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:04:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:04:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:04:23,933 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:04:23,933 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 02:04:23,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:04:23 BoogieIcfgContainer [2020-11-30 02:04:23,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:04:23,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:04:23,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:04:23,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:04:23,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:04:23" (1/3) ... [2020-11-30 02:04:23,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3de39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:04:23, skipping insertion in model container [2020-11-30 02:04:23,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:04:23" (2/3) ... [2020-11-30 02:04:23,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3de39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:04:23, skipping insertion in model container [2020-11-30 02:04:23,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:04:23" (3/3) ... [2020-11-30 02:04:23,966 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1.c [2020-11-30 02:04:23,980 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:04:23,984 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-30 02:04:23,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-30 02:04:24,051 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:04:24,052 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:04:24,052 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:04:24,052 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:04:24,052 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:04:24,053 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:04:24,053 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:04:24,053 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:04:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-30 02:04:24,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:04:24,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:24,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:04:24,094 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:24,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:24,102 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-30 02:04:24,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:24,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424767306] [2020-11-30 02:04:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:24,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424767306] [2020-11-30 02:04:24,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:04:24,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:04:24,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796644058] [2020-11-30 02:04:24,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:04:24,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:24,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:04:24,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:24,387 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-11-30 02:04:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:24,505 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-30 02:04:24,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:04:24,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 02:04:24,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:24,519 INFO L225 Difference]: With dead ends: 22 [2020-11-30 02:04:24,520 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 02:04:24,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 02:04:24,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2020-11-30 02:04:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 02:04:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-30 02:04:24,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 4 [2020-11-30 02:04:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:24,581 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-30 02:04:24,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:04:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-30 02:04:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:04:24,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:24,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:04:24,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:04:24,585 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:24,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:24,589 INFO L82 PathProgramCache]: Analyzing trace with hash 964251, now seen corresponding path program 1 times [2020-11-30 02:04:24,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:24,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103069238] [2020-11-30 02:04:24,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:24,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103069238] [2020-11-30 02:04:24,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:04:24,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:04:24,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624183104] [2020-11-30 02:04:24,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:04:24,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:24,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:04:24,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:24,650 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-11-30 02:04:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:24,712 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-11-30 02:04:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:04:24,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 02:04:24,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:24,714 INFO L225 Difference]: With dead ends: 14 [2020-11-30 02:04:24,714 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 02:04:24,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:24,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 02:04:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-30 02:04:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 02:04:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-30 02:04:24,720 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2020-11-30 02:04:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:24,721 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-30 02:04:24,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:04:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-30 02:04:24,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:04:24,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:24,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:04:24,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:04:24,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:24,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:24,728 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-11-30 02:04:24,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:24,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747860588] [2020-11-30 02:04:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:24,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747860588] [2020-11-30 02:04:24,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:04:24,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:04:24,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993969942] [2020-11-30 02:04:24,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:04:24,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:24,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:04:24,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:24,787 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-11-30 02:04:24,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:24,814 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-30 02:04:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:04:24,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:04:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:24,816 INFO L225 Difference]: With dead ends: 13 [2020-11-30 02:04:24,817 INFO L226 Difference]: Without dead ends: 12 [2020-11-30 02:04:24,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:24,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-30 02:04:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-30 02:04:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 02:04:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-30 02:04:24,823 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2020-11-30 02:04:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:24,824 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-30 02:04:24,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:04:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-30 02:04:24,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:04:24,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:24,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:04:24,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:04:24,826 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:24,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:24,827 INFO L82 PathProgramCache]: Analyzing trace with hash 29891841, now seen corresponding path program 1 times [2020-11-30 02:04:24,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:24,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899811923] [2020-11-30 02:04:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:24,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899811923] [2020-11-30 02:04:24,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:04:24,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:04:24,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705895620] [2020-11-30 02:04:24,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:04:24,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:24,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:04:24,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:24,863 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2020-11-30 02:04:24,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:24,912 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-11-30 02:04:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:04:24,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:04:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:24,915 INFO L225 Difference]: With dead ends: 11 [2020-11-30 02:04:24,915 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 02:04:24,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:04:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 02:04:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 02:04:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 02:04:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-30 02:04:24,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 5 [2020-11-30 02:04:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:24,920 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-30 02:04:24,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:04:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-30 02:04:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:04:24,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:24,922 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-30 02:04:24,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:04:24,923 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:24,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:24,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166548, now seen corresponding path program 1 times [2020-11-30 02:04:24,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:24,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328383625] [2020-11-30 02:04:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:25,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328383625] [2020-11-30 02:04:25,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042971528] [2020-11-30 02:04:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:25,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:04:25,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:04:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:25,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:04:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:04:25,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [168335556] [2020-11-30 02:04:25,201 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-30 02:04:25,202 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:04:25,208 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:04:25,215 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:04:25,217 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:04:25,533 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:04:25,716 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-11-30 02:04:25,767 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:04:25,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:04:25,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2020-11-30 02:04:25,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012371243] [2020-11-30 02:04:25,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:04:25,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:25,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:04:25,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:04:25,770 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 6 states. [2020-11-30 02:04:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:25,864 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-30 02:04:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:04:25,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-30 02:04:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:25,868 INFO L225 Difference]: With dead ends: 32 [2020-11-30 02:04:25,868 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 02:04:25,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:04:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 02:04:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2020-11-30 02:04:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 02:04:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-11-30 02:04:25,882 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 7 [2020-11-30 02:04:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:25,882 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-11-30 02:04:25,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:04:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-11-30 02:04:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:04:25,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:04:25,886 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2020-11-30 02:04:26,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:26,110 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:04:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:04:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1477250187, now seen corresponding path program 2 times [2020-11-30 02:04:26,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:04:26,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23633921] [2020-11-30 02:04:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:04:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:04:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 02:04:26,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23633921] [2020-11-30 02:04:26,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563288605] [2020-11-30 02:04:26,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-30 02:04:26,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-11-30 02:04:26,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:04:26,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:04:26,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:04:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 02:04:26,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:04:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-30 02:04:26,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1315813812] [2020-11-30 02:04:26,283 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-30 02:04:26,283 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:04:26,284 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:04:26,284 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:04:26,284 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:04:26,434 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:04:26,610 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-11-30 02:04:26,666 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:04:26,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:04:26,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2020-11-30 02:04:26,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358180157] [2020-11-30 02:04:26,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:04:26,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:04:26,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:04:26,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:04:26,669 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 6 states. [2020-11-30 02:04:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:04:26,739 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2020-11-30 02:04:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:04:26,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 02:04:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:04:26,742 INFO L225 Difference]: With dead ends: 23 [2020-11-30 02:04:26,742 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:04:26,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:04:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:04:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:04:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:04:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:04:26,744 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-30 02:04:26,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:04:26,744 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:04:26,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:04:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:04:26,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:04:26,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-30 02:04:26,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:04:26,991 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-30 02:04:26,991 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:04:26,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-30 02:04:26,992 INFO L270 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 1073741823) (<= 0 ULTIMATE.start_main_~x~0)) [2020-11-30 02:04:26,992 INFO L274 CegarLoopResult]: For program point L19-3(lines 19 21) no Hoare annotation was computed. [2020-11-30 02:04:26,992 INFO L277 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: true [2020-11-30 02:04:26,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-30 02:04:26,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-30 02:04:26,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:04:26,993 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-30 02:04:26,993 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-30 02:04:26,993 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-30 02:04:27,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:04:27 BoogieIcfgContainer [2020-11-30 02:04:27,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:04:27,025 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:04:27,025 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:04:27,025 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:04:27,026 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:04:23" (3/4) ... [2020-11-30 02:04:27,030 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:04:27,043 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 02:04:27,043 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:04:27,044 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:04:27,110 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4e54b46c-c42f-4176-a0a0-b27a073ac7e4/bin/utaipan/witness.graphml [2020-11-30 02:04:27,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:04:27,118 INFO L168 Benchmark]: Toolchain (without parser) took 4055.82 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 69.2 MB in the beginning and 81.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:04:27,121 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 98.6 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:04:27,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.70 ms. Allocated memory is still 98.6 MB. Free memory was 69.0 MB in the beginning and 75.7 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:04:27,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.41 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 74.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:04:27,125 INFO L168 Benchmark]: Boogie Preprocessor took 31.89 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.7 MB in the end (delta: 940.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:04:27,128 INFO L168 Benchmark]: RCFGBuilder took 399.28 ms. Allocated memory is still 98.6 MB. Free memory was 73.7 MB in the beginning and 63.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:04:27,131 INFO L168 Benchmark]: TraceAbstraction took 3086.52 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 62.5 MB in the beginning and 83.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 276.8 kB. Max. memory is 16.1 GB. [2020-11-30 02:04:27,131 INFO L168 Benchmark]: Witness Printer took 91.96 ms. Allocated memory is still 119.5 MB. Free memory was 83.8 MB in the beginning and 81.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:04:27,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 98.6 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 393.70 ms. Allocated memory is still 98.6 MB. Free memory was 69.0 MB in the beginning and 75.7 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.41 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 74.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.89 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.7 MB in the end (delta: 940.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 399.28 ms. Allocated memory is still 98.6 MB. Free memory was 73.7 MB in the beginning and 63.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3086.52 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 62.5 MB in the beginning and 83.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 276.8 kB. Max. memory is 16.1 GB. * Witness Printer took 91.96 ms. Allocated memory is still 119.5 MB. Free memory was 83.8 MB in the beginning and 81.7 MB in the end (delta: 2.1 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: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= y && x <= 1073741823) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 53 SDslu, 13 SDs, 0 SdLazy, 72 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s 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, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 11 HoareAnnotationTreeSize, 2 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 2435 SizeOfPredicates, 3 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 6 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...