./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Et2_true.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/Et2_true.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI --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 9a16c2ef65c9470765f02a1675d8617e78fbed55 ............................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:54,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:54,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:54,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:54,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:54,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:54,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:54,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:54,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:54,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:54,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:54,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:54,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:54,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:54,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:54,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:54,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:54,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:54,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:54,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:54,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:54,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:54,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:54,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:54,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:54,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:54,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:54,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:54,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:54,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:54,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:54,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:54,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:54,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:54,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:54,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:54,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:54,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:54,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:54,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:54,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:54,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:24:54,860 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:54,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:54,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:54,866 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:54,866 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:54,867 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:54,867 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:54,868 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:54,868 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:54,869 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:54,869 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:54,873 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:54,873 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:54,874 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:54,874 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:54,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:54,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:24:54,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:54,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:54,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:54,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:54,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:54,876 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:24:54,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:54,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:54,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:54,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:54,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:54,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:54,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:54,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:54,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:54,880 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:54,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:54,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:54,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:54,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:54,882 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_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a16c2ef65c9470765f02a1675d8617e78fbed55 [2021-10-11 02:24:55,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:55,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:55,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:55,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:55,233 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:55,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-numeric/Et2_true.c [2021-10-11 02:24:55,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/data/581f39546/3dfaf7c1c1344b7ba63723377c87e2a0/FLAGb0ebb7eeb [2021-10-11 02:24:56,013 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:56,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/sv-benchmarks/c/termination-numeric/Et2_true.c [2021-10-11 02:24:56,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/data/581f39546/3dfaf7c1c1344b7ba63723377c87e2a0/FLAGb0ebb7eeb [2021-10-11 02:24:56,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/data/581f39546/3dfaf7c1c1344b7ba63723377c87e2a0 [2021-10-11 02:24:56,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:56,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:56,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:56,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:56,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:56,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1e4b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56, skipping insertion in model container [2021-10-11 02:24:56,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:56,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:56,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:56,632 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:56,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:56,709 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:56,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56 WrapperNode [2021-10-11 02:24:56,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:56,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:56,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:56,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:56,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:56,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:56,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:56,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:56,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... [2021-10-11 02:24:56,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:56,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:56,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:56,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:56,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:24:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure loop [2021-10-11 02:24:56,920 INFO L138 BoogieDeclarations]: Found implementation of procedure loop [2021-10-11 02:24:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:56,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:57,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:57,354 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:24:57,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:57 BoogieIcfgContainer [2021-10-11 02:24:57,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:57,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:57,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:57,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:57,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:56" (1/3) ... [2021-10-11 02:24:57,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8ad52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:57, skipping insertion in model container [2021-10-11 02:24:57,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:56" (2/3) ... [2021-10-11 02:24:57,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8ad52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:57, skipping insertion in model container [2021-10-11 02:24:57,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:57" (3/3) ... [2021-10-11 02:24:57,370 INFO L111 eAbstractionObserver]: Analyzing ICFG Et2_true.c [2021-10-11 02:24:57,389 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:57,392 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2021-10-11 02:24:57,406 INFO L253 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-10-11 02:24:57,448 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:57,448 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:57,449 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:57,449 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:57,449 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:57,449 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:57,449 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:57,450 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-10-11 02:24:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:24:57,490 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:57,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:24:57,492 INFO L429 AbstractCegarLoop]: === Iteration 1 === [loopErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:24:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash 66629, now seen corresponding path program 1 times [2021-10-11 02:24:57,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:57,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824381748] [2021-10-11 02:24:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:57,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:57,662 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:57,690 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:24:57,691 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:24:57,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:57,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:57 BoogieIcfgContainer [2021-10-11 02:24:57,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:57,717 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:57,717 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:57,718 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:57,718 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:57" (3/4) ... [2021-10-11 02:24:57,721 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:24:57,777 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7694dcf0-0367-421a-8fb8-324e278e4e2e/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:57,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:57,783 INFO L168 Benchmark]: Toolchain (without parser) took 1398.63 ms. Allocated memory is still 98.6 MB. Free memory was 69.2 MB in the beginning and 47.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:57,783 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:57,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.92 ms. Allocated memory is still 98.6 MB. Free memory was 68.9 MB in the beginning and 77.0 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:57,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.03 ms. Allocated memory is still 98.6 MB. Free memory was 77.0 MB in the beginning and 75.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:57,794 INFO L168 Benchmark]: Boogie Preprocessor took 46.09 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 74.5 MB in the end (delta: 846.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:57,796 INFO L168 Benchmark]: RCFGBuilder took 541.14 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 59.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:57,797 INFO L168 Benchmark]: TraceAbstraction took 354.44 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 48.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:57,798 INFO L168 Benchmark]: Witness Printer took 60.29 ms. Allocated memory is still 98.6 MB. Free memory was 48.5 MB in the beginning and 47.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:57,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.92 ms. Allocated memory is still 98.6 MB. Free memory was 68.9 MB in the beginning and 77.0 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.03 ms. Allocated memory is still 98.6 MB. Free memory was 77.0 MB in the beginning and 75.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.09 ms. Allocated memory is still 98.6 MB. Free memory was 75.4 MB in the beginning and 74.5 MB in the end (delta: 846.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 541.14 ms. Allocated memory is still 98.6 MB. Free memory was 74.5 MB in the beginning and 59.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 354.44 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 48.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 60.29 ms. Allocated memory is still 98.6 MB. Free memory was 48.5 MB in the beginning and 47.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x = __VERIFIER_nondet_int(); [L24] int y = __VERIFIER_nondet_int(); [L25] int z = __VERIFIER_nondet_int(); [L31] int x = __VERIFIER_nondet_int(); [L32] COND TRUE x < 0 [L33] -x - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...