./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GulwaniJainKoskinen-PLDI2009-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GulwaniJainKoskinen-PLDI2009-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/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 64bit --witnessprinter.graph.data.programhash d7d414d68736ab19121f0afd030fc9c628e90ba4 ....................................................................................................................................................................................................................................................................................................... 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 16:27:56,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:27:56,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:27:56,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:27:56,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:27:56,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:27:56,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:27:56,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:27:56,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:27:56,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:27:56,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:27:56,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:27:56,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:27:56,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:27:56,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:27:56,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:27:56,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:27:56,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:27:56,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:27:56,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:27:56,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:27:56,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:27:56,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:27:56,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:27:56,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:27:56,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:27:56,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:27:56,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:27:56,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:27:56,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:27:56,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:27:56,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:27:56,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:27:56,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:27:56,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:27:56,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:27:56,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:27:56,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:27:56,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:27:56,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:27:56,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:27:56,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-12-07 16:27:56,343 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:27:56,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:27:56,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:27:56,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:27:56,344 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 16:27:56,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:27:56,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:27:56,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:27:56,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:27:56,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:27:56,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:27:56,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:27:56,345 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 16:27:56,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:27:56,345 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:27:56,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:27:56,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:27:56,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:27:56,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:27:56,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:27:56,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:27:56,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:27:56,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:27:56,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:27:56,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 16:27:56,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:27:56,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:27:56,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:27:56,347 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_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7d414d68736ab19121f0afd030fc9c628e90ba4 [2019-12-07 16:27:56,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:27:56,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:27:56,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:27:56,457 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:27:56,457 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:27:56,458 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GulwaniJainKoskinen-PLDI2009-Fig1.c [2019-12-07 16:27:56,495 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/data/c6352b9b5/19ea8e916c474f59a84b0131b609968d/FLAG2d4f864e2 [2019-12-07 16:27:56,809 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:27:56,810 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/sv-benchmarks/c/termination-crafted-lit/GulwaniJainKoskinen-PLDI2009-Fig1.c [2019-12-07 16:27:56,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/data/c6352b9b5/19ea8e916c474f59a84b0131b609968d/FLAG2d4f864e2 [2019-12-07 16:27:56,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/data/c6352b9b5/19ea8e916c474f59a84b0131b609968d [2019-12-07 16:27:56,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:27:56,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:27:56,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:27:56,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:27:56,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:27:56,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:56,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8ebb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56, skipping insertion in model container [2019-12-07 16:27:56,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:56,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:27:56,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:27:56,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:27:56,941 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:27:56,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:27:56,994 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:27:56,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56 WrapperNode [2019-12-07 16:27:56,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:27:56,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:27:56,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:27:56,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:27:57,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:57,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:57,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:27:57,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:27:57,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:27:57,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:27:57,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:57,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:57,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:57,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:57,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:57,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:57,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... [2019-12-07 16:27:57,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:27:57,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:27:57,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:27:57,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:27:57,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/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 16:27:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:27:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:27:57,174 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:27:57,174 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 16:27:57,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:27:57 BoogieIcfgContainer [2019-12-07 16:27:57,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:27:57,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:27:57,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:27:57,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:27:57,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:27:56" (1/3) ... [2019-12-07 16:27:57,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388cb178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:27:57, skipping insertion in model container [2019-12-07 16:27:57,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:27:56" (2/3) ... [2019-12-07 16:27:57,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388cb178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:27:57, skipping insertion in model container [2019-12-07 16:27:57,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:27:57" (3/3) ... [2019-12-07 16:27:57,180 INFO L109 eAbstractionObserver]: Analyzing ICFG GulwaniJainKoskinen-PLDI2009-Fig1.c [2019-12-07 16:27:57,186 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:27:57,190 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 16:27:57,197 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 16:27:57,212 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:27:57,212 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:27:57,212 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:27:57,212 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:27:57,212 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:27:57,212 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:27:57,212 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:27:57,212 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:27:57,222 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-07 16:27:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 16:27:57,225 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:27:57,225 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 16:27:57,226 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 16:27:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:27:57,229 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 16:27:57,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:27:57,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210507989] [2019-12-07 16:27:57,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:27:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:27:57,331 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 16:27:57,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210507989] [2019-12-07 16:27:57,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:27:57,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:27:57,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502400387] [2019-12-07 16:27:57,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:27:57,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:27:57,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:27:57,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:27:57,346 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-12-07 16:27:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:27:57,381 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-12-07 16:27:57,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:27:57,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-12-07 16:27:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:27:57,388 INFO L225 Difference]: With dead ends: 26 [2019-12-07 16:27:57,388 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 16:27:57,390 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:27:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 16:27:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 16:27:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 16:27:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-12-07 16:27:57,411 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 3 [2019-12-07 16:27:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:27:57,411 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-12-07 16:27:57,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:27:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-12-07 16:27:57,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 16:27:57,412 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:27:57,412 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 16:27:57,412 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 16:27:57,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:27:57,412 INFO L82 PathProgramCache]: Analyzing trace with hash 957349, now seen corresponding path program 1 times [2019-12-07 16:27:57,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:27:57,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059832085] [2019-12-07 16:27:57,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:27:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:27:57,426 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 16:27:57,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059832085] [2019-12-07 16:27:57,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:27:57,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:27:57,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369657407] [2019-12-07 16:27:57,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:27:57,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 16:27:57,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:27:57,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:27:57,428 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-12-07 16:27:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:27:57,434 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-12-07 16:27:57,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:27:57,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 16:27:57,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:27:57,435 INFO L225 Difference]: With dead ends: 13 [2019-12-07 16:27:57,435 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 16:27:57,436 INFO L630 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 [2019-12-07 16:27:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 16:27:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 16:27:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 16:27:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-12-07 16:27:57,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2019-12-07 16:27:57,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:27:57,439 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-07 16:27:57,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:27:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-12-07 16:27:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:27:57,440 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:27:57,440 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:27:57,441 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 16:27:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:27:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1943900432, now seen corresponding path program 1 times [2019-12-07 16:27:57,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 16:27:57,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869415654] [2019-12-07 16:27:57,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:27:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:27:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:27:57,470 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 16:27:57,470 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:27:57,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:27:57 BoogieIcfgContainer [2019-12-07 16:27:57,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:27:57,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:27:57,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:27:57,484 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:27:57,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:27:57" (3/4) ... [2019-12-07 16:27:57,485 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 16:27:57,511 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a42ddfe6-ff0e-47b3-bbf8-1a199cbe1d5f/bin/uautomizer/witness.graphml [2019-12-07 16:27:57,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:27:57,512 INFO L168 Benchmark]: Toolchain (without parser) took 686.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -85.6 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:27:57,513 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:27:57,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:27:57,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:27:57,514 INFO L168 Benchmark]: Boogie Preprocessor took 12.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:27:57,514 INFO L168 Benchmark]: RCFGBuilder took 146.73 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:27:57,514 INFO L168 Benchmark]: TraceAbstraction took 307.69 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: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:27:57,515 INFO L168 Benchmark]: Witness Printer took 27.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:27:57,517 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -141.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 146.73 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 307.69 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: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 11.5 GB. * Witness Printer took 27.49 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L16] int id, maxId, tmp; [L17] id = __VERIFIER_nondet_int() [L18] maxId = __VERIFIER_nondet_int() [L21] COND TRUE 0 <= id && id < maxId [L22] EXPR id+1 [L22] tmp = id+1 [L23] tmp!=id && __VERIFIER_nondet_int() != 0 [L23] tmp!=id && __VERIFIER_nondet_int() != 0 [L23] COND TRUE tmp!=id && __VERIFIER_nondet_int() != 0 [L24] COND TRUE tmp <= maxId [L25] tmp + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 47 SDslu, 3 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...