./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/easy1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/easy1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/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 444b5d8373157a5e55f28060b712b2ca462d0fa9 ............................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:40:33,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:40:33,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:40:33,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:40:33,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:40:33,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:40:33,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:40:33,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:40:33,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:40:33,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:40:33,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:40:33,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:40:33,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:40:33,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:40:33,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:40:33,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:40:33,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:40:33,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:40:33,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:40:33,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:40:33,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:40:33,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:40:33,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:40:33,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:40:33,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:40:33,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:40:33,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:40:33,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:40:33,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:40:33,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:40:33,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:40:33,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:40:33,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:40:33,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:40:33,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:40:33,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:40:33,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:40:33,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:40:33,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:40:33,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:40:33,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:40:33,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-12-03 12:40:34,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:40:34,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:40:34,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:40:34,021 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:40:34,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:40:34,022 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:40:34,022 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:40:34,022 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:40:34,022 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:40:34,023 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:40:34,024 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:40:34,024 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:40:34,025 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:40:34,025 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:40:34,025 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:40:34,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:40:34,026 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:40:34,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:40:34,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:40:34,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:40:34,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:40:34,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:40:34,028 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:40:34,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:40:34,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:40:34,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:40:34,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:40:34,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:40:34,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:40:34,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:40:34,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:40:34,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:40:34,032 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:40:34,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:40:34,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:40:34,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:40:34,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:40:34,034 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_32d37bbd-5022-4a03-bb57-1f541dfe1311/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 444b5d8373157a5e55f28060b712b2ca462d0fa9 [2020-12-03 12:40:34,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:40:34,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:40:34,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:40:34,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:40:34,334 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:40:34,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/../../sv-benchmarks/c/termination-crafted/easy1.c [2020-12-03 12:40:34,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/data/708104e99/6aec142f335642deafc422972d91da01/FLAG28e502f14 [2020-12-03 12:40:34,868 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:40:34,869 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/sv-benchmarks/c/termination-crafted/easy1.c [2020-12-03 12:40:34,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/data/708104e99/6aec142f335642deafc422972d91da01/FLAG28e502f14 [2020-12-03 12:40:35,251 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/data/708104e99/6aec142f335642deafc422972d91da01 [2020-12-03 12:40:35,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:40:35,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:40:35,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:40:35,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:40:35,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:40:35,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19373cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35, skipping insertion in model container [2020-12-03 12:40:35,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:40:35,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:40:35,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:40:35,430 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:40:35,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:40:35,473 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:40:35,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35 WrapperNode [2020-12-03 12:40:35,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:40:35,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:40:35,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:40:35,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:40:35,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:40:35,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:40:35,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:40:35,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:40:35,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... [2020-12-03 12:40:35,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:40:35,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:40:35,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:40:35,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:40:35,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/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 [2020-12-03 12:40:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:40:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:40:35,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:40:35,878 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-03 12:40:35,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:40:35 BoogieIcfgContainer [2020-12-03 12:40:35,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:40:35,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:40:35,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:40:35,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:40:35,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:40:35" (1/3) ... [2020-12-03 12:40:35,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639dc4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:40:35, skipping insertion in model container [2020-12-03 12:40:35,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:40:35" (2/3) ... [2020-12-03 12:40:35,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639dc4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:40:35, skipping insertion in model container [2020-12-03 12:40:35,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:40:35" (3/3) ... [2020-12-03 12:40:35,892 INFO L111 eAbstractionObserver]: Analyzing ICFG easy1.c [2020-12-03 12:40:35,912 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:40:35,915 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-03 12:40:35,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-03 12:40:35,947 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:40:35,947 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:40:35,947 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:40:35,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:40:35,948 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:40:35,948 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:40:35,948 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:40:35,948 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:40:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-03 12:40:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:40:35,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:40:35,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:40:35,967 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:40:35,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:40:35,973 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-12-03 12:40:35,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:40:35,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108934124] [2020-12-03 12:40:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:40:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:40:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:40:36,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108934124] [2020-12-03 12:40:36,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:40:36,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-03 12:40:36,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246863089] [2020-12-03 12:40:36,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:40:36,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:40:36,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:40:36,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:40:36,128 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-12-03 12:40:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:40:36,186 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-12-03 12:40:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:40:36,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-03 12:40:36,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:40:36,197 INFO L225 Difference]: With dead ends: 21 [2020-12-03 12:40:36,197 INFO L226 Difference]: Without dead ends: 17 [2020-12-03 12:40:36,200 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 [2020-12-03 12:40:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-03 12:40:36,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-12-03 12:40:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-03 12:40:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-03 12:40:36,267 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 4 [2020-12-03 12:40:36,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:40:36,267 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-03 12:40:36,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:40:36,267 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-03 12:40:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-03 12:40:36,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:40:36,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-03 12:40:36,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:40:36,269 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:40:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:40:36,270 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-12-03 12:40:36,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:40:36,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951832939] [2020-12-03 12:40:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:40:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:40:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:40:36,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951832939] [2020-12-03 12:40:36,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:40:36,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-03 12:40:36,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534037378] [2020-12-03 12:40:36,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:40:36,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:40:36,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:40:36,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:40:36,328 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2020-12-03 12:40:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:40:36,372 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-12-03 12:40:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:40:36,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-03 12:40:36,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:40:36,373 INFO L225 Difference]: With dead ends: 15 [2020-12-03 12:40:36,373 INFO L226 Difference]: Without dead ends: 13 [2020-12-03 12:40:36,374 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 [2020-12-03 12:40:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-03 12:40:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-03 12:40:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-03 12:40:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-12-03 12:40:36,378 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 5 [2020-12-03 12:40:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:40:36,378 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-12-03 12:40:36,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:40:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-03 12:40:36,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:40:36,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:40:36,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2020-12-03 12:40:36,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:40:36,380 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:40:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:40:36,381 INFO L82 PathProgramCache]: Analyzing trace with hash 784501312, now seen corresponding path program 1 times [2020-12-03 12:40:36,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:40:36,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632705745] [2020-12-03 12:40:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:40:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:40:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 12:40:36,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632705745] [2020-12-03 12:40:36,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:40:36,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:40:36,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540849628] [2020-12-03 12:40:36,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:40:36,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:40:36,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:40:36,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:40:36,441 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2020-12-03 12:40:36,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:40:36,481 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-12-03 12:40:36,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:40:36,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-03 12:40:36,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:40:36,483 INFO L225 Difference]: With dead ends: 13 [2020-12-03 12:40:36,483 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:40:36,484 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 [2020-12-03 12:40:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:40:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:40:36,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:40:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:40:36,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-12-03 12:40:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:40:36,488 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:40:36,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:40:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:40:36,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:40:36,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:40:36,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:40:36,502 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-03 12:40:36,502 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:40:36,502 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-12-03 12:40:36,503 INFO L262 CegarLoopResult]: For program point L21(lines 21 25) no Hoare annotation was computed. [2020-12-03 12:40:36,503 INFO L258 CegarLoopResult]: At program point L21-2(lines 20 26) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~x~0) [2020-12-03 12:40:36,503 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-12-03 12:40:36,503 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-12-03 12:40:36,503 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:40:36,503 INFO L262 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-12-03 12:40:36,504 INFO L262 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-12-03 12:40:36,504 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-03 12:40:36,504 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-12-03 12:40:36,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:40:36 BoogieIcfgContainer [2020-12-03 12:40:36,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:40:36,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:40:36,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:40:36,520 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:40:36,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:40:35" (3/4) ... [2020-12-03 12:40:36,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:40:36,533 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-03 12:40:36,533 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-03 12:40:36,533 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:40:36,590 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_32d37bbd-5022-4a03-bb57-1f541dfe1311/bin/utaipan/witness.graphml [2020-12-03 12:40:36,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:40:36,593 INFO L168 Benchmark]: Toolchain (without parser) took 1335.89 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 54.3 MB in the beginning and 47.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:40:36,594 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 42.8 MB in the beginning and 42.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:40:36,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.75 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 54.0 MB in the beginning and 93.9 MB in the end (delta: -39.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:40:36,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.33 ms. Allocated memory is still 115.3 MB. Free memory was 93.9 MB in the beginning and 92.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:40:36,596 INFO L168 Benchmark]: Boogie Preprocessor took 18.12 ms. Allocated memory is still 115.3 MB. Free memory was 92.6 MB in the beginning and 92.0 MB in the end (delta: 643.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:40:36,597 INFO L168 Benchmark]: RCFGBuilder took 356.75 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 81.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:40:36,597 INFO L168 Benchmark]: TraceAbstraction took 636.34 ms. Allocated memory is still 115.3 MB. Free memory was 80.7 MB in the beginning and 50.7 MB in the end (delta: 30.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:40:36,598 INFO L168 Benchmark]: Witness Printer took 71.37 ms. Allocated memory is still 115.3 MB. Free memory was 50.0 MB in the beginning and 47.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:40:36,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 42.8 MB in the beginning and 42.7 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 216.75 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 54.0 MB in the beginning and 93.9 MB in the end (delta: -39.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.33 ms. Allocated memory is still 115.3 MB. Free memory was 93.9 MB in the beginning and 92.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.12 ms. Allocated memory is still 115.3 MB. Free memory was 92.6 MB in the beginning and 92.0 MB in the end (delta: 643.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 356.75 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 81.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 636.34 ms. Allocated memory is still 115.3 MB. Free memory was 80.7 MB in the beginning and 50.7 MB in the end (delta: 30.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 71.37 ms. Allocated memory is still 115.3 MB. Free memory was 50.0 MB in the beginning and 47.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 12 SDslu, 2 SDs, 0 SdLazy, 29 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=1, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 3 HoareAnnotationTreeSize, 1 FomulaSimplifications, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...