./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/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_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/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 32bit --witnessprinter.graph.data.programhash 091ae9d10f73e4826e5ce40c092816900bcc502a ....................................................................................................................................................................................................................................................................................... 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 02:31:18,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:18,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:18,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:18,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:18,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:18,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:18,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:18,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:18,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:18,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:18,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:18,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:18,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:18,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:18,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:18,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:18,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:18,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:18,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:18,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:18,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:18,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:18,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:18,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:18,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:18,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:18,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:18,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:18,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:18,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:18,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:18,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:18,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:18,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:18,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:18,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:18,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:18,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:18,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:18,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:18,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:31:19,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:19,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:19,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:19,024 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:19,024 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:19,025 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:19,025 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:19,025 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:19,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:19,026 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:19,027 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:19,027 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:19,027 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:19,028 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:19,028 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:19,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:19,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:19,029 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:31:19,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:19,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:19,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:19,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:19,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:19,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:19,031 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:31:19,031 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:19,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:19,032 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:19,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:19,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:19,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:19,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:19,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:19,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:19,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:19,035 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:19,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:19,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:19,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:19,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:19,037 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_a86ae141-4903-4be1-94ca-0be73a1ad5d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 091ae9d10f73e4826e5ce40c092816900bcc502a [2021-10-11 02:31:19,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:19,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:19,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:19,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:19,340 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:19,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2021-10-11 02:31:19,416 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/data/e16f59c05/64557794d4f34aee80fed7f5772e8282/FLAG86637cd6c [2021-10-11 02:31:20,022 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:20,023 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2021-10-11 02:31:20,032 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/data/e16f59c05/64557794d4f34aee80fed7f5772e8282/FLAG86637cd6c [2021-10-11 02:31:20,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/data/e16f59c05/64557794d4f34aee80fed7f5772e8282 [2021-10-11 02:31:20,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:20,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:20,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:20,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:20,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:20,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791dd7fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20, skipping insertion in model container [2021-10-11 02:31:20,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:20,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:20,632 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/sv-benchmarks/c/loop-zilu/benchmark47_linear.i[868,881] [2021-10-11 02:31:20,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:20,653 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:20,663 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/sv-benchmarks/c/loop-zilu/benchmark47_linear.i[868,881] [2021-10-11 02:31:20,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:20,680 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:20,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20 WrapperNode [2021-10-11 02:31:20,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:20,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:20,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:20,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:20,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:20,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:20,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:20,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:20,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... [2021-10-11 02:31:20,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:20,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:20,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:20,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:20,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/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 02:31:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:20,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:21,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:21,138 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:31:21,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:21 BoogieIcfgContainer [2021-10-11 02:31:21,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:21,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:21,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:21,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:21,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:20" (1/3) ... [2021-10-11 02:31:21,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229071fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:21, skipping insertion in model container [2021-10-11 02:31:21,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:20" (2/3) ... [2021-10-11 02:31:21,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229071fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:21, skipping insertion in model container [2021-10-11 02:31:21,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:21" (3/3) ... [2021-10-11 02:31:21,150 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark47_linear.i [2021-10-11 02:31:21,164 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:21,167 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2021-10-11 02:31:21,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-11 02:31:21,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:21,202 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:21,202 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:21,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:21,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:21,203 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:21,203 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:21,203 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:21,235 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2021-10-11 02:31:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:31:21,239 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:21,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:31:21,241 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:31:21,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:21,263 INFO L82 PathProgramCache]: Analyzing trace with hash 93500143, now seen corresponding path program 1 times [2021-10-11 02:31:21,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:21,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39861974] [2021-10-11 02:31:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:21,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39861974] [2021-10-11 02:31:21,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:21,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:21,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128613160] [2021-10-11 02:31:21,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:21,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:21,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:21,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:21,485 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2021-10-11 02:31:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:21,572 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-10-11 02:31:21,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:21,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:31:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:21,594 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:31:21,594 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:31:21,597 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 [2021-10-11 02:31:21,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:31:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-11 02:31:21,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:31:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-11 02:31:21,640 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2021-10-11 02:31:21,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:21,641 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-11 02:31:21,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-10-11 02:31:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:31:21,641 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:21,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:31:21,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:21,642 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:31:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash 93500335, now seen corresponding path program 1 times [2021-10-11 02:31:21,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:21,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589451633] [2021-10-11 02:31:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:31:21,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:31:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:31:21,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:31:21,741 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:31:21,742 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:31:21,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:31:21,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:21 BoogieIcfgContainer [2021-10-11 02:31:21,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:21,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:21,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:21,771 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:21,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:21" (3/4) ... [2021-10-11 02:31:21,774 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:31:21,818 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a86ae141-4903-4be1-94ca-0be73a1ad5d5/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:31:21,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:21,826 INFO L168 Benchmark]: Toolchain (without parser) took 1430.78 ms. Allocated memory was 111.1 MB in the beginning and 157.3 MB in the end (delta: 46.1 MB). Free memory was 83.4 MB in the beginning and 87.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:21,826 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 111.1 MB. Free memory is still 64.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:21,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.73 ms. Allocated memory was 111.1 MB in the beginning and 157.3 MB in the end (delta: 46.1 MB). Free memory was 83.4 MB in the beginning and 132.9 MB in the end (delta: -49.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:21,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.73 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 131.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:21,829 INFO L168 Benchmark]: Boogie Preprocessor took 19.97 ms. Allocated memory is still 157.3 MB. Free memory was 131.3 MB in the beginning and 130.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:21,832 INFO L168 Benchmark]: RCFGBuilder took 403.90 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 112.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:21,833 INFO L168 Benchmark]: TraceAbstraction took 627.26 ms. Allocated memory is still 157.3 MB. Free memory was 111.9 MB in the beginning and 89.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:21,833 INFO L168 Benchmark]: Witness Printer took 48.53 ms. Allocated memory is still 157.3 MB. Free memory was 89.3 MB in the beginning and 87.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:21,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 111.1 MB. Free memory is still 64.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.73 ms. Allocated memory was 111.1 MB in the beginning and 157.3 MB in the end (delta: 46.1 MB). Free memory was 83.4 MB in the beginning and 132.9 MB in the end (delta: -49.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.73 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 131.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.97 ms. Allocated memory is still 157.3 MB. Free memory was 131.3 MB in the beginning and 130.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 403.90 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 112.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 627.26 ms. Allocated memory is still 157.3 MB. Free memory was 111.9 MB in the beginning and 89.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 48.53 ms. Allocated memory is still 157.3 MB. Free memory was 89.3 MB in the beginning and 87.8 MB in the end (delta: 1.5 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: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x