./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-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/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 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 [2020-12-09 09:08:56,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:08:56,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:08:56,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:08:56,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:08:56,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:08:56,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:08:56,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:08:56,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:08:56,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:08:56,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:08:56,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:08:56,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:08:56,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:08:56,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:08:56,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:08:56,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:08:56,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:08:56,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:08:56,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:08:56,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:08:56,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:08:56,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:08:56,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:08:56,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:08:56,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:08:56,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:08:56,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:08:56,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:08:56,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:08:56,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:08:56,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:08:56,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:08:56,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:08:56,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:08:56,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:08:56,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:08:56,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:08:56,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:08:56,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:08:56,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:08:56,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-09 09:08:56,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:08:56,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:08:56,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:08:56,520 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:08:56,520 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:08:56,520 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:08:56,520 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:08:56,520 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:08:56,520 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:08:56,520 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:08:56,520 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:08:56,521 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:08:56,521 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:08:56,521 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:08:56,521 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:08:56,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:08:56,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:08:56,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 09:08:56,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:08:56,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:08:56,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:08:56,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:08:56,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:08:56,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:08:56,523 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 09:08:56,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:08:56,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:08:56,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:08:56,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:08:56,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:08:56,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:08:56,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:08:56,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:08:56,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:08:56,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:08:56,524 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:08:56,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:08:56,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:08:56,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:08:56,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:08:56,525 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_bc063735-1a2d-40bf-b0ca-a894feb11ade/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 091ae9d10f73e4826e5ce40c092816900bcc502a [2020-12-09 09:08:56,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:08:56,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:08:56,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:08:56,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:08:56,717 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:08:56,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2020-12-09 09:08:56,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/data/f05d3923e/191d04f6a8a1403eb58dfb8025c029d9/FLAG11b1a224e [2020-12-09 09:08:57,127 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:08:57,127 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2020-12-09 09:08:57,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/data/f05d3923e/191d04f6a8a1403eb58dfb8025c029d9/FLAG11b1a224e [2020-12-09 09:08:57,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/data/f05d3923e/191d04f6a8a1403eb58dfb8025c029d9 [2020-12-09 09:08:57,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:08:57,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:08:57,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:08:57,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:08:57,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:08:57,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274974b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57, skipping insertion in model container [2020-12-09 09:08:57,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:08:57,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:08:57,275 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/sv-benchmarks/c/loop-zilu/benchmark47_linear.i[868,881] [2020-12-09 09:08:57,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:08:57,289 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:08:57,298 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/sv-benchmarks/c/loop-zilu/benchmark47_linear.i[868,881] [2020-12-09 09:08:57,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:08:57,312 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:08:57,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57 WrapperNode [2020-12-09 09:08:57,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:08:57,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:08:57,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:08:57,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:08:57,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:08:57,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:08:57,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:08:57,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:08:57,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... [2020-12-09 09:08:57,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:08:57,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:08:57,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:08:57,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:08:57,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/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 [2020-12-09 09:08:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:08:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:08:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:08:57,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:08:57,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:08:57,637 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 09:08:57,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:08:57 BoogieIcfgContainer [2020-12-09 09:08:57,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:08:57,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:08:57,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:08:57,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:08:57,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:08:57" (1/3) ... [2020-12-09 09:08:57,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfa8019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:08:57, skipping insertion in model container [2020-12-09 09:08:57,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:08:57" (2/3) ... [2020-12-09 09:08:57,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfa8019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:08:57, skipping insertion in model container [2020-12-09 09:08:57,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:08:57" (3/3) ... [2020-12-09 09:08:57,647 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark47_linear.i [2020-12-09 09:08:57,660 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:08:57,663 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-09 09:08:57,672 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-09 09:08:57,693 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:08:57,693 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:08:57,693 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:08:57,693 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:08:57,693 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:08:57,693 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:08:57,693 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:08:57,694 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:08:57,704 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 09:08:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 09:08:57,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:08:57,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 09:08:57,708 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]=== [2020-12-09 09:08:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:08:57,712 INFO L82 PathProgramCache]: Analyzing trace with hash 93500143, now seen corresponding path program 1 times [2020-12-09 09:08:57,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:08:57,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489514628] [2020-12-09 09:08:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:08:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:08:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:08:57,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489514628] [2020-12-09 09:08:57,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:08:57,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:08:57,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784353125] [2020-12-09 09:08:57,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:08:57,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:08:57,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:08:57,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:08:57,836 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-12-09 09:08:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:08:57,869 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-12-09 09:08:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:08:57,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 09:08:57,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:08:57,876 INFO L225 Difference]: With dead ends: 29 [2020-12-09 09:08:57,877 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 09:08:57,879 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 [2020-12-09 09:08:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 09:08:57,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-09 09:08:57,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 09:08:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-12-09 09:08:57,902 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2020-12-09 09:08:57,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:08:57,902 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-12-09 09:08:57,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:08:57,902 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-12-09 09:08:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 09:08:57,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:08:57,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 09:08:57,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:08:57,903 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]=== [2020-12-09 09:08:57,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:08:57,904 INFO L82 PathProgramCache]: Analyzing trace with hash 93500335, now seen corresponding path program 1 times [2020-12-09 09:08:57,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:08:57,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627193431] [2020-12-09 09:08:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:08:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:08:57,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:08:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:08:57,931 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:08:57,947 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 09:08:57,948 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:08:57,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:08:57,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:08:57 BoogieIcfgContainer [2020-12-09 09:08:57,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:08:57,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:08:57,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:08:57,968 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:08:57,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:08:57" (3/4) ... [2020-12-09 09:08:57,970 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 09:08:58,000 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bc063735-1a2d-40bf-b0ca-a894feb11ade/bin/utaipan/witness.graphml [2020-12-09 09:08:58,000 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:08:58,002 INFO L168 Benchmark]: Toolchain (without parser) took 853.26 ms. Allocated memory is still 125.8 MB. Free memory was 95.1 MB in the beginning and 72.2 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-12-09 09:08:58,002 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 125.8 MB. Free memory is still 102.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:08:58,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.36 ms. Allocated memory is still 125.8 MB. Free memory was 95.0 MB in the beginning and 85.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:08:58,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.09 ms. Allocated memory is still 125.8 MB. Free memory was 85.5 MB in the beginning and 84.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:08:58,003 INFO L168 Benchmark]: Boogie Preprocessor took 15.44 ms. Allocated memory is still 125.8 MB. Free memory was 84.1 MB in the beginning and 83.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:08:58,004 INFO L168 Benchmark]: RCFGBuilder took 284.61 ms. Allocated memory is still 125.8 MB. Free memory was 83.0 MB in the beginning and 98.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:08:58,004 INFO L168 Benchmark]: TraceAbstraction took 326.08 ms. Allocated memory is still 125.8 MB. Free memory was 97.6 MB in the beginning and 73.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:08:58,005 INFO L168 Benchmark]: Witness Printer took 32.39 ms. Allocated memory is still 125.8 MB. Free memory was 73.8 MB in the beginning and 72.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:08:58,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 125.8 MB. Free memory is still 102.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 163.36 ms. Allocated memory is still 125.8 MB. Free memory was 95.0 MB in the beginning and 85.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.09 ms. Allocated memory is still 125.8 MB. Free memory was 85.5 MB in the beginning and 84.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.44 ms. Allocated memory is still 125.8 MB. Free memory was 84.1 MB in the beginning and 83.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 284.61 ms. Allocated memory is still 125.8 MB. Free memory was 83.0 MB in the beginning and 98.0 MB in the end (delta: -15.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 326.08 ms. Allocated memory is still 125.8 MB. Free memory was 97.6 MB in the beginning and 73.8 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 32.39 ms. Allocated memory is still 125.8 MB. Free memory was 73.8 MB in the beginning and 72.4 MB in the end (delta: 1.4 MB). There was no memory consumed. 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