./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/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 0.1.25-f470102 [2019-12-07 15:44:33,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:44:33,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:44:33,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:44:33,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:44:33,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:44:33,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:44:33,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:44:33,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:44:33,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:44:33,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:44:33,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:44:33,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:44:33,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:44:33,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:44:33,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:44:33,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:44:33,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:44:33,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:44:33,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:44:33,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:44:33,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:44:33,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:44:33,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:44:33,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:44:33,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:44:33,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:44:33,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:44:33,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:44:33,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:44:33,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:44:33,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:44:33,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:44:33,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:44:33,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:44:33,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:44:33,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:44:33,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:44:33,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:44:33,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:44:33,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:44:33,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-12-07 15:44:33,148 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:44:33,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:44:33,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:44:33,148 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:44:33,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:44:33,149 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:44:33,149 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:44:33,149 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:44:33,149 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:44:33,149 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:44:33,149 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:44:33,149 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:44:33,149 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:44:33,150 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:44:33,150 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:44:33,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:44:33,150 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:44:33,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:44:33,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:44:33,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:44:33,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:44:33,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:44:33,151 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 15:44:33,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:44:33,151 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:44:33,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:44:33,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:44:33,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:44:33,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:44:33,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:44:33,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:44:33,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:44:33,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:44:33,152 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:44:33,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:44:33,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:44:33,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:44:33,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:44:33,153 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ec76e737-3eef-4962-9f70-3972b03f37ab/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 [2019-12-07 15:44:33,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:44:33,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:44:33,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:44:33,268 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:44:33,268 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:44:33,269 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2019-12-07 15:44:33,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/data/62da64a01/e681dc0feae24b60b1729f2433479d9c/FLAG2ec0d1157 [2019-12-07 15:44:33,692 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:44:33,693 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2019-12-07 15:44:33,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/data/62da64a01/e681dc0feae24b60b1729f2433479d9c/FLAG2ec0d1157 [2019-12-07 15:44:34,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/data/62da64a01/e681dc0feae24b60b1729f2433479d9c [2019-12-07 15:44:34,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:44:34,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:44:34,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:34,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:44:34,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:44:34,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c613338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34, skipping insertion in model container [2019-12-07 15:44:34,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:44:34,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:44:34,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:34,216 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:44:34,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:34,264 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:44:34,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34 WrapperNode [2019-12-07 15:44:34,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:34,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:34,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:44:34,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:44:34,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:34,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:44:34,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:44:34,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:44:34,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:44:34,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:44:34,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:44:34,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:44:34,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/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 [2019-12-07 15:44:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:44:34,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:44:34,458 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:44:34,458 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 15:44:34,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:34 BoogieIcfgContainer [2019-12-07 15:44:34,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:44:34,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:44:34,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:44:34,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:44:34,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:44:34" (1/3) ... [2019-12-07 15:44:34,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d3a231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:34, skipping insertion in model container [2019-12-07 15:44:34,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34" (2/3) ... [2019-12-07 15:44:34,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d3a231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:34, skipping insertion in model container [2019-12-07 15:44:34,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:34" (3/3) ... [2019-12-07 15:44:34,466 INFO L109 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2019-12-07 15:44:34,474 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:44:34,480 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 15:44:34,488 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 15:44:34,503 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:44:34,503 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:44:34,503 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:44:34,503 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:44:34,503 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:44:34,503 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:44:34,503 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:44:34,503 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:44:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-12-07 15:44:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 15:44:34,516 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:34,516 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 15:44:34,516 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:44:34,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:34,520 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-12-07 15:44:34,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:44:34,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896169673] [2019-12-07 15:44:34,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:34,611 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896169673] [2019-12-07 15:44:34,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:34,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:44:34,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485426953] [2019-12-07 15:44:34,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:44:34,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:44:34,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:44:34,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:44:34,627 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-12-07 15:44:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:34,656 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-12-07 15:44:34,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:44:34,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 15:44:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:34,664 INFO L225 Difference]: With dead ends: 12 [2019-12-07 15:44:34,664 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 15:44:34,666 INFO L630 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 [2019-12-07 15:44:34,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 15:44:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 15:44:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 15:44:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-12-07 15:44:34,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2019-12-07 15:44:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:34,687 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 15:44:34,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:44:34,687 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-12-07 15:44:34,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 15:44:34,687 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:34,687 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 15:44:34,687 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:44:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:34,688 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2019-12-07 15:44:34,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:44:34,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729460721] [2019-12-07 15:44:34,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:34,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729460721] [2019-12-07 15:44:34,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:34,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:44:34,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781221228] [2019-12-07 15:44:34,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:44:34,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:44:34,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:44:34,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:44:34,704 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2019-12-07 15:44:34,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:34,729 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-12-07 15:44:34,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:44:34,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 15:44:34,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:34,730 INFO L225 Difference]: With dead ends: 15 [2019-12-07 15:44:34,730 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 15:44:34,731 INFO L630 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 [2019-12-07 15:44:34,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 15:44:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 15:44:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 15:44:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-12-07 15:44:34,734 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 4 [2019-12-07 15:44:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:34,735 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-12-07 15:44:34,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:44:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-12-07 15:44:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 15:44:34,735 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:34,735 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 15:44:34,735 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:44:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:34,736 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2019-12-07 15:44:34,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:44:34,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919047133] [2019-12-07 15:44:34,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:34,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919047133] [2019-12-07 15:44:34,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:34,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:44:34,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687497537] [2019-12-07 15:44:34,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:44:34,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:44:34,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:44:34,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:44:34,751 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2019-12-07 15:44:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:34,764 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-12-07 15:44:34,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:44:34,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 15:44:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:34,765 INFO L225 Difference]: With dead ends: 14 [2019-12-07 15:44:34,765 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 15:44:34,765 INFO L630 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 [2019-12-07 15:44:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 15:44:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 15:44:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 15:44:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-12-07 15:44:34,767 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 5 [2019-12-07 15:44:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:34,768 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-12-07 15:44:34,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:44:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-12-07 15:44:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 15:44:34,768 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:34,768 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 15:44:34,768 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:44:34,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:34,768 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2019-12-07 15:44:34,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:44:34,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219428393] [2019-12-07 15:44:34,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:34,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219428393] [2019-12-07 15:44:34,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:34,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:44:34,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936726901] [2019-12-07 15:44:34,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:44:34,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:44:34,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:44:34,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:44:34,781 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 3 states. [2019-12-07 15:44:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:34,792 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2019-12-07 15:44:34,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:44:34,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 15:44:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:34,793 INFO L225 Difference]: With dead ends: 13 [2019-12-07 15:44:34,793 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 15:44:34,794 INFO L630 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 [2019-12-07 15:44:34,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 15:44:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 15:44:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 15:44:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-12-07 15:44:34,797 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2019-12-07 15:44:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:34,797 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-07 15:44:34,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:44:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-12-07 15:44:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:44:34,798 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:34,798 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:34,798 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:44:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:34,798 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2019-12-07 15:44:34,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:44:34,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127679077] [2019-12-07 15:44:34,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:34,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127679077] [2019-12-07 15:44:34,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:34,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:44:34,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468345974] [2019-12-07 15:44:34,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:44:34,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:44:34,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:44:34,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:44:34,821 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-12-07 15:44:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:34,844 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2019-12-07 15:44:34,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:44:34,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 15:44:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:34,845 INFO L225 Difference]: With dead ends: 20 [2019-12-07 15:44:34,845 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:44:34,845 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:44:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:44:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:44:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:44:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:44:34,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-12-07 15:44:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:34,846 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:44:34,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:44:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:44:34,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:44:34,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:44:34,870 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-12-07 15:44:34,870 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:44:34,871 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 15:44:34,871 INFO L246 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-12-07 15:44:34,871 INFO L242 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))) [2019-12-07 15:44:34,871 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2019-12-07 15:44:34,871 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 15:44:34,871 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:44:34,871 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-12-07 15:44:34,871 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-12-07 15:44:34,871 INFO L246 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2019-12-07 15:44:34,871 INFO L246 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-12-07 15:44:34,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:44:34 BoogieIcfgContainer [2019-12-07 15:44:34,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:44:34,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:44:34,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:44:34,883 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:44:34,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:34" (3/4) ... [2019-12-07 15:44:34,885 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:44:34,891 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 15:44:34,892 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 15:44:34,892 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:44:34,918 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ec76e737-3eef-4962-9f70-3972b03f37ab/bin/utaipan/witness.graphml [2019-12-07 15:44:34,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:44:34,920 INFO L168 Benchmark]: Toolchain (without parser) took 822.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 941.4 MB in the beginning and 1.0 GB in the end (delta: -83.9 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:34,920 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:34,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:34,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:34,921 INFO L168 Benchmark]: Boogie Preprocessor took 11.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:34,921 INFO L168 Benchmark]: RCFGBuilder took 162.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:34,922 INFO L168 Benchmark]: TraceAbstraction took 421.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:34,922 INFO L168 Benchmark]: Witness Printer took 35.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:34,924 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.81 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 421.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 54.0 MB). Peak memory consumption was 54.0 MB. Max. memory is 11.5 GB. * Witness Printer took 35.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 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. Result: SAFE, OverallTime: 0.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 15 SDslu, 0 SDs, 0 SdLazy, 66 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...