./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08bbe2c494adbfbcc4d1f2aa863ee46abea55656 ................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 16:18:06,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:18:06,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:18:06,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:18:06,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:18:06,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:18:06,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:18:06,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:18:06,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:18:06,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:18:06,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:18:06,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:18:06,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:18:06,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:18:06,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:18:06,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:18:06,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:18:06,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:18:06,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:18:06,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:18:06,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:18:06,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:18:06,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:18:06,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:18:06,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:18:06,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:18:06,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:18:06,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:18:06,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:18:06,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:18:06,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:18:06,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:18:06,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:18:06,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:18:06,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:18:06,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:18:06,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:18:06,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:18:06,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:18:06,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:18:06,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:18:06,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-12-07 16:18:06,483 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:18:06,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:18:06,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:18:06,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:18:06,484 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:18:06,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:18:06,484 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:18:06,484 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:18:06,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:18:06,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:18:06,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:18:06,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:18:06,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:18:06,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:18:06,485 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 16:18:06,485 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:18:06,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:18:06,486 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:18:06,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:18:06,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:18:06,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:18:06,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:18:06,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:18:06,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:18:06,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:18:06,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:18:06,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:18:06,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:18:06,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:18:06,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:18:06,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:18:06,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer 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 -> Automizer 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 -> 08bbe2c494adbfbcc4d1f2aa863ee46abea55656 [2019-12-07 16:18:06,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:18:06,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:18:06,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:18:06,599 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:18:06,599 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:18:06,600 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c [2019-12-07 16:18:06,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/data/8f35465af/675b124f6e7843c1a899a48474cd5d42/FLAG55dc2a47f [2019-12-07 16:18:07,067 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:18:07,068 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/sv-benchmarks/c/recursive-simple/id_b5_o10-1.c [2019-12-07 16:18:07,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/data/8f35465af/675b124f6e7843c1a899a48474cd5d42/FLAG55dc2a47f [2019-12-07 16:18:07,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/data/8f35465af/675b124f6e7843c1a899a48474cd5d42 [2019-12-07 16:18:07,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:18:07,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:18:07,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:18:07,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:18:07,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:18:07,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cac4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07, skipping insertion in model container [2019-12-07 16:18:07,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:18:07,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:18:07,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:18:07,216 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:18:07,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:18:07,272 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:18:07,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07 WrapperNode [2019-12-07 16:18:07,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:18:07,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:18:07,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:18:07,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:18:07,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:18:07,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:18:07,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:18:07,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:18:07,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... [2019-12-07 16:18:07,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:18:07,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:18:07,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:18:07,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:18:07,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/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 [2019-12-07 16:18:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:18:07,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:18:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-12-07 16:18:07,343 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-12-07 16:18:07,440 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:18:07,440 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 16:18:07,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:18:07 BoogieIcfgContainer [2019-12-07 16:18:07,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:18:07,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:18:07,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:18:07,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:18:07,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:18:07" (1/3) ... [2019-12-07 16:18:07,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a924ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:18:07, skipping insertion in model container [2019-12-07 16:18:07,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:18:07" (2/3) ... [2019-12-07 16:18:07,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a924ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:18:07, skipping insertion in model container [2019-12-07 16:18:07,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:18:07" (3/3) ... [2019-12-07 16:18:07,446 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-1.c [2019-12-07 16:18:07,452 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:18:07,456 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 16:18:07,464 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 16:18:07,478 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:18:07,478 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:18:07,478 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:18:07,478 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:18:07,478 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:18:07,479 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:18:07,479 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:18:07,479 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:18:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-12-07 16:18:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 16:18:07,493 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:18:07,493 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 16:18:07,494 INFO L410 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 16:18:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:18:07,497 INFO L82 PathProgramCache]: Analyzing trace with hash 30579597, now seen corresponding path program 1 times [2019-12-07 16:18:07,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:18:07,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762915498] [2019-12-07 16:18:07,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:18:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:18:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:18:07,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762915498] [2019-12-07 16:18:07,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:18:07,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 16:18:07,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765326962] [2019-12-07 16:18:07,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 16:18:07,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:18:07,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 16:18:07,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:18:07,617 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-12-07 16:18:07,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:18:07,662 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-12-07 16:18:07,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:18:07,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 16:18:07,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:18:07,669 INFO L225 Difference]: With dead ends: 26 [2019-12-07 16:18:07,669 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 16:18:07,671 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 16:18:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 16:18:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 16:18:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 16:18:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-12-07 16:18:07,696 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 5 [2019-12-07 16:18:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:18:07,696 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-12-07 16:18:07,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 16:18:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-12-07 16:18:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 16:18:07,696 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:18:07,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:18:07,697 INFO L410 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 16:18:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:18:07,697 INFO L82 PathProgramCache]: Analyzing trace with hash 947967559, now seen corresponding path program 1 times [2019-12-07 16:18:07,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:18:07,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649354941] [2019-12-07 16:18:07,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:18:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:18:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:18:07,717 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:18:07,717 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:18:07,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:18:07 BoogieIcfgContainer [2019-12-07 16:18:07,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:18:07,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:18:07,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:18:07,731 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:18:07,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:18:07" (3/4) ... [2019-12-07 16:18:07,733 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 16:18:07,756 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d41a902c-43a2-4264-9643-108452ff7347/bin/uautomizer/witness.graphml [2019-12-07 16:18:07,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:18:07,758 INFO L168 Benchmark]: Toolchain (without parser) took 674.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 940.3 MB in the beginning and 1.0 GB in the end (delta: -107.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:18:07,758 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:18:07,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -158.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:18:07,759 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:18:07,759 INFO L168 Benchmark]: Boogie Preprocessor took 10.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:18:07,760 INFO L168 Benchmark]: RCFGBuilder took 137.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:18:07,760 INFO L168 Benchmark]: TraceAbstraction took 288.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:18:07,761 INFO L168 Benchmark]: Witness Printer took 25.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:18:07,763 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 957.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 188.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -158.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 137.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 288.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * Witness Printer took 25.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int input = __VERIFIER_nondet_int(); [L13] CALL id(input) VAL [\old(x)=-2147483648] [L5] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L6] x-1 VAL [\old(x)=-2147483648, x=-2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 31 SDslu, 22 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...