./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_step2-1.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_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_step2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/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 c7d1dab681440b8e4fbe52aab1c781a8a0ad5fbc ............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:57:53,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:57:53,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:57:53,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:57:53,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:57:53,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:57:53,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:57:53,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:57:53,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:57:53,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:57:53,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:57:53,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:57:53,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:57:53,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:57:53,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:57:53,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:57:53,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:57:53,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:57:53,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:57:53,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:57:53,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:57:53,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:57:53,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:57:53,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:57:53,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:57:53,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:57:53,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:57:53,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:57:53,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:57:53,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:57:53,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:57:53,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:57:53,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:57:53,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:57:53,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:57:53,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:57:53,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:57:53,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:57:53,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:57:53,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:57:53,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:57:53,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 12:57:53,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:57:53,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:57:53,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:57:53,899 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:57:53,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:57:53,900 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:57:53,900 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:57:53,900 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:57:53,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:57:53,901 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:57:53,902 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:57:53,902 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:57:53,902 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:57:53,902 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:57:53,902 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:57:53,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:57:53,903 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:57:53,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:57:53,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:57:53,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:57:53,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:57:53,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:57:53,905 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 12:57:53,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:57:53,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:57:53,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:57:53,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:57:53,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:57:53,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:57:53,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:57:53,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:57:53,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:57:53,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:57:53,907 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:57:53,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:57:53,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:57:53,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:57:53,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:57:53,908 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_46603f6b-a5c3-4bae-90c6-48e73b6051da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7d1dab681440b8e4fbe52aab1c781a8a0ad5fbc [2020-11-22 12:57:54,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:57:54,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:57:54,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:57:54,189 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:57:54,189 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:57:54,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Cairo_step2-1.c [2020-11-22 12:57:54,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/data/71209a3a7/fa7d7951e67c4243940bd5a4ff15160b/FLAG2bfc0a0ff [2020-11-22 12:57:54,753 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:57:54,753 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/sv-benchmarks/c/termination-crafted/Cairo_step2-1.c [2020-11-22 12:57:54,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/data/71209a3a7/fa7d7951e67c4243940bd5a4ff15160b/FLAG2bfc0a0ff [2020-11-22 12:57:55,155 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/data/71209a3a7/fa7d7951e67c4243940bd5a4ff15160b [2020-11-22 12:57:55,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:57:55,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:57:55,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:55,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:57:55,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:57:55,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613852eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55, skipping insertion in model container [2020-11-22 12:57:55,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:57:55,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:57:55,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:55,368 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:57:55,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:57:55,410 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:57:55,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55 WrapperNode [2020-11-22 12:57:55,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:57:55,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:55,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:57:55,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:57:55,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:57:55,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:57:55,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:57:55,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:57:55,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... [2020-11-22 12:57:55,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:57:55,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:57:55,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:57:55,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:57:55,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/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 [2020-11-22 12:57:55,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:57:55,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:57:55,694 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:57:55,694 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-22 12:57:55,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:55 BoogieIcfgContainer [2020-11-22 12:57:55,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:57:55,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:57:55,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:57:55,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:57:55,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:57:55" (1/3) ... [2020-11-22 12:57:55,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef3a40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:55, skipping insertion in model container [2020-11-22 12:57:55,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:57:55" (2/3) ... [2020-11-22 12:57:55,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef3a40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:57:55, skipping insertion in model container [2020-11-22 12:57:55,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:55" (3/3) ... [2020-11-22 12:57:55,710 INFO L111 eAbstractionObserver]: Analyzing ICFG Cairo_step2-1.c [2020-11-22 12:57:55,720 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:57:55,727 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 12:57:55,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 12:57:55,762 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:57:55,763 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:57:55,771 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:57:55,772 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:57:55,772 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:57:55,772 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:57:55,772 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:57:55,772 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:57:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-22 12:57:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 12:57:55,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:55,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 12:57:55,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:57:55,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2020-11-22 12:57:55,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:55,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133889627] [2020-11-22 12:57:55,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:56,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133889627] [2020-11-22 12:57:56,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:56,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-22 12:57:56,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379147164] [2020-11-22 12:57:56,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:56,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:56,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:56,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:56,038 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-11-22 12:57:56,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:56,116 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-11-22 12:57:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:56,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-22 12:57:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:56,128 INFO L225 Difference]: With dead ends: 9 [2020-11-22 12:57:56,128 INFO L226 Difference]: Without dead ends: 6 [2020-11-22 12:57:56,133 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 [2020-11-22 12:57:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-22 12:57:56,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-22 12:57:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-22 12:57:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-22 12:57:56,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-11-22 12:57:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:56,172 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-22 12:57:56,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-11-22 12:57:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:57:56,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:56,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:57:56,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:57:56,174 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:57:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:56,175 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2020-11-22 12:57:56,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:56,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954310339] [2020-11-22 12:57:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:56,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954310339] [2020-11-22 12:57:56,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:57:56,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:57:56,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982273892] [2020-11-22 12:57:56,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:57:56,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:56,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:57:56,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:57:56,209 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2020-11-22 12:57:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:56,246 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-22 12:57:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:57:56,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-22 12:57:56,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:56,257 INFO L225 Difference]: With dead ends: 10 [2020-11-22 12:57:56,258 INFO L226 Difference]: Without dead ends: 9 [2020-11-22 12:57:56,258 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 [2020-11-22 12:57:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-22 12:57:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-22 12:57:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-22 12:57:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-22 12:57:56,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-22 12:57:56,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:56,262 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-22 12:57:56,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:57:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-22 12:57:56,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:57:56,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:57:56,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2020-11-22 12:57:56,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:57:56,263 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:57:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:57:56,264 INFO L82 PathProgramCache]: Analyzing trace with hash -423045501, now seen corresponding path program 1 times [2020-11-22 12:57:56,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:57:56,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893568301] [2020-11-22 12:57:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:57:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:56,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893568301] [2020-11-22 12:57:56,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082657567] [2020-11-22 12:57:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/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 [2020-11-22 12:57:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:57:56,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:57:56,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:57:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:56,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:57:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:57:56,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [516146233] [2020-11-22 12:57:56,454 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-11-22 12:57:56,454 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 12:57:56,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 12:57:56,465 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 12:57:56,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 12:57:56,603 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 12:57:56,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-22 12:57:56,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 8 [2020-11-22 12:57:56,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883617277] [2020-11-22 12:57:56,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:57:56,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:57:56,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:57:56,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:56,806 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2020-11-22 12:57:56,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:57:56,830 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-22 12:57:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:57:56,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-22 12:57:56,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:57:56,831 INFO L225 Difference]: With dead ends: 9 [2020-11-22 12:57:56,831 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:57:56,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:57:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:57:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:57:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:57:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:57:56,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-22 12:57:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:57:56,833 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:57:56,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:57:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:57:56,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:57:57,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 12:57:57,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:57:57,118 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-22 12:57:57,118 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:57:57,119 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-22 12:57:57,119 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-11-22 12:57:57,119 INFO L274 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-11-22 12:57:57,119 INFO L270 CegarLoopResult]: At program point L15-1(lines 15 19) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-22 12:57:57,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-22 12:57:57,119 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:57:57,120 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 18) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (< 0 (+ ULTIMATE.start_main_~x~0 2))) [2020-11-22 12:57:57,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:57:57 BoogieIcfgContainer [2020-11-22 12:57:57,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:57:57,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:57:57,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:57:57,147 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:57:57,148 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:57:55" (3/4) ... [2020-11-22 12:57:57,153 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:57:57,163 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 12:57:57,163 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 12:57:57,163 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:57:57,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_46603f6b-a5c3-4bae-90c6-48e73b6051da/bin/utaipan/witness.graphml [2020-11-22 12:57:57,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:57:57,199 INFO L168 Benchmark]: Toolchain (without parser) took 2038.41 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 72.5 MB in the beginning and 100.9 MB in the end (delta: -28.4 MB). Peak memory consumption was 293.0 kB. Max. memory is 16.1 GB. [2020-11-22 12:57:57,199 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:57,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.04 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 77.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:57,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.67 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:57,201 INFO L168 Benchmark]: Boogie Preprocessor took 24.86 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 75.6 MB in the end (delta: 782.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:57,201 INFO L168 Benchmark]: RCFGBuilder took 222.43 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 66.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:57,202 INFO L168 Benchmark]: TraceAbstraction took 1448.80 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 66.3 MB in the beginning and 103.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:57:57,203 INFO L168 Benchmark]: Witness Printer took 50.12 ms. Allocated memory is still 130.0 MB. Free memory was 103.0 MB in the beginning and 100.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:57:57,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.04 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 77.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.67 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.86 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 75.6 MB in the end (delta: 782.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 222.43 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 66.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1448.80 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 66.3 MB in the beginning and 103.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 50.12 ms. Allocated memory is still 130.0 MB. Free memory was 103.0 MB in the beginning and 100.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 && 0 < x + 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 21 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 634 SizeOfPredicates, 1 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/9 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: OVERALL_TIME[ms]: 150, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 11, TOOLS_POST_TIME[ms]: 10, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 11, TOOLS_QUANTIFIERELIM_TIME[ms]: 6, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 3, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 23, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 74, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 15, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 10, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 98, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 98, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 6, DAG_COMPRESSION_PROCESSED_NODES: 35, DAG_COMPRESSION_RETAINED_NODES: 20, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...