./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.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_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/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 df3ddc93bc6339292c9158119f1fdb949bb8842d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:41,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:41,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:41,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:41,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:41,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:41,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:41,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:41,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:41,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:41,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:41,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:41,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:41,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:41,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:41,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:41,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:41,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:41,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:41,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:41,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:41,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:41,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:41,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:41,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:41,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:41,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:41,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:41,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:41,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:41,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:41,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:41,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:41,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:41,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:41,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:41,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:41,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:41,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:41,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:41,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:41,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-28 07:40:41,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:41,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:41,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:41,775 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:41,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:41,775 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:41,776 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:41,776 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:41,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:41,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:41,777 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:41,777 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:41,777 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:41,777 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:41,778 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:41,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:41,779 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:40:41,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:41,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:41,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:41,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:41,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:41,780 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 07:40:41,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:41,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:41,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:41,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:41,781 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:41,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:41,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:41,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:41,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:41,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:41,783 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:41,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:41,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:41,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:41,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:41,784 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_7b914169-3340-47a6-a381-c6ecd0842007/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df3ddc93bc6339292c9158119f1fdb949bb8842d [2020-11-28 07:40:42,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:42,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:42,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:42,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:42,124 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:42,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2020-11-28 07:40:42,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/data/0c49c0d15/9a7625aa1231428eabb021bb9d83a482/FLAG2628f5a2a [2020-11-28 07:40:42,709 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:42,710 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2020-11-28 07:40:42,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/data/0c49c0d15/9a7625aa1231428eabb021bb9d83a482/FLAG2628f5a2a [2020-11-28 07:40:43,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/data/0c49c0d15/9a7625aa1231428eabb021bb9d83a482 [2020-11-28 07:40:43,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:43,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:43,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:43,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:43,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:43,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5156a3f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43, skipping insertion in model container [2020-11-28 07:40:43,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:43,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:43,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:43,347 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:43,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:43,396 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:43,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43 WrapperNode [2020-11-28 07:40:43,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:43,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:43,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:43,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:43,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:43,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:43,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:43,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:43,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... [2020-11-28 07:40:43,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:43,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:43,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:43,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:43,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/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 [2020-11-28 07:40:43,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:43,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:43,945 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:43,945 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 07:40:43,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:43 BoogieIcfgContainer [2020-11-28 07:40:43,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:43,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:43,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:43,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:43,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:43" (1/3) ... [2020-11-28 07:40:43,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b4c8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:43, skipping insertion in model container [2020-11-28 07:40:43,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:43" (2/3) ... [2020-11-28 07:40:43,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b4c8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:43, skipping insertion in model container [2020-11-28 07:40:43,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:43" (3/3) ... [2020-11-28 07:40:43,964 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2020-11-28 07:40:43,978 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:43,989 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 07:40:44,004 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 07:40:44,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:44,034 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:44,034 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:44,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:44,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:44,035 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:44,035 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:44,035 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-28 07:40:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:40:44,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:44,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:40:44,054 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:44,061 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-28 07:40:44,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:44,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165161453] [2020-11-28 07:40:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165161453] [2020-11-28 07:40:44,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:44,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:44,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110176084] [2020-11-28 07:40:44,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:44,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:44,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:44,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:44,272 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-11-28 07:40:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:44,393 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-11-28 07:40:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:44,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 07:40:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:44,406 INFO L225 Difference]: With dead ends: 12 [2020-11-28 07:40:44,406 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:40:44,411 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 [2020-11-28 07:40:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:40:44,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 07:40:44,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 07:40:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-28 07:40:44,466 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-11-28 07:40:44,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:44,466 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-28 07:40:44,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:44,467 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-28 07:40:44,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:40:44,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:44,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:40:44,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:44,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:44,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:44,472 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-11-28 07:40:44,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:44,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152922212] [2020-11-28 07:40:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152922212] [2020-11-28 07:40:44,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:44,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:40:44,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826442714] [2020-11-28 07:40:44,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:44,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:44,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:44,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:44,518 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-11-28 07:40:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:44,601 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-11-28 07:40:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:44,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 07:40:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:44,603 INFO L225 Difference]: With dead ends: 15 [2020-11-28 07:40:44,603 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 07:40:44,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 07:40:44,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 07:40:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 07:40:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-11-28 07:40:44,612 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 4 [2020-11-28 07:40:44,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:44,614 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-11-28 07:40:44,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-11-28 07:40:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:40:44,616 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:44,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:40:44,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:44,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:44,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:44,621 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-11-28 07:40:44,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:44,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020825021] [2020-11-28 07:40:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020825021] [2020-11-28 07:40:44,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:44,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:40:44,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904102181] [2020-11-28 07:40:44,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:44,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:44,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:44,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:44,676 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2020-11-28 07:40:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:44,716 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2020-11-28 07:40:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:44,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:40:44,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:44,718 INFO L225 Difference]: With dead ends: 14 [2020-11-28 07:40:44,718 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 07:40:44,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 07:40:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-28 07:40:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 07:40:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-11-28 07:40:44,723 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 5 [2020-11-28 07:40:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:44,726 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-11-28 07:40:44,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-11-28 07:40:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:40:44,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:44,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:40:44,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:40:44,728 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:44,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:44,731 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-11-28 07:40:44,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:44,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378613225] [2020-11-28 07:40:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378613225] [2020-11-28 07:40:44,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:44,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:44,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590662316] [2020-11-28 07:40:44,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:44,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:44,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:44,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:44,778 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 3 states. [2020-11-28 07:40:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:44,797 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2020-11-28 07:40:44,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:44,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 07:40:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:44,798 INFO L225 Difference]: With dead ends: 13 [2020-11-28 07:40:44,799 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 07:40:44,799 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 [2020-11-28 07:40:44,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 07:40:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 07:40:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:40:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-28 07:40:44,803 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2020-11-28 07:40:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:44,803 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-28 07:40:44,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-28 07:40:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:40:44,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:44,805 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:44,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:40:44,805 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 07:40:44,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:44,806 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2020-11-28 07:40:44,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:44,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406039093] [2020-11-28 07:40:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406039093] [2020-11-28 07:40:44,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628057783] [2020-11-28 07:40:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/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 [2020-11-28 07:40:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:44,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:40:44,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:44,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:45,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:40:45,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2020-11-28 07:40:45,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779317961] [2020-11-28 07:40:45,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:45,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:45,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:45,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:45,041 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 6 states. [2020-11-28 07:40:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:45,105 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2020-11-28 07:40:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:40:45,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-28 07:40:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:45,106 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:40:45,106 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:45,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:45,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:45,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-28 07:40:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:45,108 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:45,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:45,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:45,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:45,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:45,389 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 07:40:45,389 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:45,389 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 07:40:45,389 INFO L274 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-11-28 07:40:45,390 INFO L270 CegarLoopResult]: At program point L17-2(lines 16 22) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2020-11-28 07:40:45,390 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 07:40:45,390 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-11-28 07:40:45,390 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:45,390 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-28 07:40:45,390 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-11-28 07:40:45,391 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-11-28 07:40:45,391 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-11-28 07:40:45,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:45 BoogieIcfgContainer [2020-11-28 07:40:45,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:45,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:45,422 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:45,422 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:45,423 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:43" (3/4) ... [2020-11-28 07:40:45,427 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:45,439 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:40:45,439 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:40:45,440 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:40:45,499 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7b914169-3340-47a6-a381-c6ecd0842007/bin/utaipan/witness.graphml [2020-11-28 07:40:45,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:45,507 INFO L168 Benchmark]: Toolchain (without parser) took 2439.26 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 59.5 MB in the beginning and 79.2 MB in the end (delta: -19.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:45,509 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 75.2 MB in the beginning and 75.1 MB in the end (delta: 86.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:45,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.74 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 72.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:45,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.84 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 71.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:45,513 INFO L168 Benchmark]: Boogie Preprocessor took 30.09 ms. Allocated memory is still 94.4 MB. Free memory was 71.1 MB in the beginning and 70.4 MB in the end (delta: 702.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:45,518 INFO L168 Benchmark]: RCFGBuilder took 475.38 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 60.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:45,519 INFO L168 Benchmark]: TraceAbstraction took 1469.06 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 60.0 MB in the beginning and 81.3 MB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:45,520 INFO L168 Benchmark]: Witness Printer took 82.99 ms. Allocated memory is still 113.2 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:45,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 75.2 MB in the beginning and 75.1 MB in the end (delta: 86.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.74 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 72.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.84 ms. Allocated memory is still 94.4 MB. Free memory was 72.3 MB in the beginning and 71.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.09 ms. Allocated memory is still 94.4 MB. Free memory was 71.1 MB in the beginning and 70.4 MB in the end (delta: 702.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 475.38 ms. Allocated memory is still 94.4 MB. Free memory was 70.2 MB in the beginning and 60.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1469.06 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 60.0 MB in the beginning and 81.3 MB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 82.99 ms. Allocated memory is still 113.2 MB. Free memory was 81.3 MB in the beginning and 79.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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: 18]: 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: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && 0 <= x + 2147483648 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 18 SDslu, 0 SDs, 0 SdLazy, 71 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 9 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 546 SizeOfPredicates, 1 NumberOfNonLiveVariables, 15 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 5/6 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...