./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/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 f1df70d37f8afdd882c0c58eaed03ed11e314407 ................................................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-01 16:45:52,453 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 16:45:52,454 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 16:45:52,460 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 16:45:52,460 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 16:45:52,461 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 16:45:52,462 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 16:45:52,463 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 16:45:52,464 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 16:45:52,464 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 16:45:52,465 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 16:45:52,465 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 16:45:52,466 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 16:45:52,467 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 16:45:52,467 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 16:45:52,468 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 16:45:52,468 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 16:45:52,470 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 16:45:52,471 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 16:45:52,472 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 16:45:52,473 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 16:45:52,474 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 16:45:52,475 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 16:45:52,475 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 16:45:52,476 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 16:45:52,476 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 16:45:52,477 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 16:45:52,477 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 16:45:52,478 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 16:45:52,479 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 16:45:52,479 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 16:45:52,479 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 16:45:52,479 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 16:45:52,480 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 16:45:52,480 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 16:45:52,481 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 16:45:52,481 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-12-01 16:45:52,490 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 16:45:52,490 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 16:45:52,491 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 16:45:52,491 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 16:45:52,491 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 16:45:52,491 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 16:45:52,491 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 16:45:52,492 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 16:45:52,492 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 16:45:52,492 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 16:45:52,492 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 16:45:52,492 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 16:45:52,492 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 16:45:52,492 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 16:45:52,492 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-01 16:45:52,492 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 16:45:52,492 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 16:45:52,493 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 16:45:52,493 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 16:45:52,493 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 16:45:52,493 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 16:45:52,493 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 16:45:52,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 16:45:52,493 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 16:45:52,493 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 16:45:52,493 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 16:45:52,493 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 16:45:52,494 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 16:45:52,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 16:45:52,494 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/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 -> f1df70d37f8afdd882c0c58eaed03ed11e314407 [2018-12-01 16:45:52,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 16:45:52,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 16:45:52,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 16:45:52,525 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 16:45:52,525 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 16:45:52,526 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c [2018-12-01 16:45:52,566 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/data/204f4fe09/4aabdf0f147c41899178d7603eeeeb51/FLAG7b1629977 [2018-12-01 16:45:52,979 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 16:45:52,979 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c [2018-12-01 16:45:52,982 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/data/204f4fe09/4aabdf0f147c41899178d7603eeeeb51/FLAG7b1629977 [2018-12-01 16:45:52,990 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/data/204f4fe09/4aabdf0f147c41899178d7603eeeeb51 [2018-12-01 16:45:52,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 16:45:52,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 16:45:52,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 16:45:52,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 16:45:52,995 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 16:45:52,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:45:52" (1/1) ... [2018-12-01 16:45:52,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af6adec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:52, skipping insertion in model container [2018-12-01 16:45:52,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:45:52" (1/1) ... [2018-12-01 16:45:53,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 16:45:53,011 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 16:45:53,094 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:45:53,096 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 16:45:53,105 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:45:53,113 INFO L195 MainTranslator]: Completed translation [2018-12-01 16:45:53,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53 WrapperNode [2018-12-01 16:45:53,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 16:45:53,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 16:45:53,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 16:45:53,113 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 16:45:53,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... [2018-12-01 16:45:53,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... [2018-12-01 16:45:53,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 16:45:53,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 16:45:53,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 16:45:53,125 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 16:45:53,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... [2018-12-01 16:45:53,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... [2018-12-01 16:45:53,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... [2018-12-01 16:45:53,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... [2018-12-01 16:45:53,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... [2018-12-01 16:45:53,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... [2018-12-01 16:45:53,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... [2018-12-01 16:45:53,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 16:45:53,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 16:45:53,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 16:45:53,141 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 16:45:53,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/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 [2018-12-01 16:45:53,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 16:45:53,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 16:45:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-12-01 16:45:53,202 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-12-01 16:45:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure g [2018-12-01 16:45:53,202 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2018-12-01 16:45:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 16:45:53,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 16:45:53,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 16:45:53,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 16:45:53,291 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 16:45:53,291 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-01 16:45:53,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:45:53 BoogieIcfgContainer [2018-12-01 16:45:53,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 16:45:53,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 16:45:53,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 16:45:53,294 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 16:45:53,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:45:52" (1/3) ... [2018-12-01 16:45:53,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd07d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:45:53, skipping insertion in model container [2018-12-01 16:45:53,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:45:53" (2/3) ... [2018-12-01 16:45:53,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd07d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:45:53, skipping insertion in model container [2018-12-01 16:45:53,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:45:53" (3/3) ... [2018-12-01 16:45:53,296 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex2_false-no-overflow.c [2018-12-01 16:45:53,302 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 16:45:53,307 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-01 16:45:53,317 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-01 16:45:53,334 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 16:45:53,335 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 16:45:53,335 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 16:45:53,335 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 16:45:53,335 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 16:45:53,335 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 16:45:53,335 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 16:45:53,335 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 16:45:53,335 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 16:45:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-01 16:45:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 16:45:53,349 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:45:53,350 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:45:53,351 INFO L423 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:45:53,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:45:53,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1431844715, now seen corresponding path program 1 times [2018-12-01 16:45:53,356 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:45:53,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:45:53,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:45:53,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:45:53,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:45:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:45:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:45:53,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:45:53,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 16:45:53,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 16:45:53,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 16:45:53,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 16:45:53,462 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-12-01 16:45:53,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:45:53,515 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-12-01 16:45:53,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 16:45:53,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-01 16:45:53,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:45:53,521 INFO L225 Difference]: With dead ends: 44 [2018-12-01 16:45:53,521 INFO L226 Difference]: Without dead ends: 26 [2018-12-01 16:45:53,523 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 16:45:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-01 16:45:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2018-12-01 16:45:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-01 16:45:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-12-01 16:45:53,544 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 10 [2018-12-01 16:45:53,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:45:53,545 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-12-01 16:45:53,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 16:45:53,545 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-12-01 16:45:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 16:45:53,545 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:45:53,545 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:45:53,545 INFO L423 AbstractCegarLoop]: === Iteration 2 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:45:53,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:45:53,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1437513166, now seen corresponding path program 1 times [2018-12-01 16:45:53,546 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:45:53,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:45:53,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:45:53,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:45:53,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:45:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:45:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:45:53,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:45:53,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 16:45:53,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 16:45:53,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 16:45:53,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 16:45:53,575 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 5 states. [2018-12-01 16:45:53,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:45:53,597 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-12-01 16:45:53,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 16:45:53,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-01 16:45:53,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:45:53,598 INFO L225 Difference]: With dead ends: 26 [2018-12-01 16:45:53,598 INFO L226 Difference]: Without dead ends: 25 [2018-12-01 16:45:53,599 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-01 16:45:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-01 16:45:53,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-12-01 16:45:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 16:45:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-12-01 16:45:53,601 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 11 [2018-12-01 16:45:53,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:45:53,602 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-12-01 16:45:53,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 16:45:53,602 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-12-01 16:45:53,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 16:45:53,602 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:45:53,602 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:45:53,602 INFO L423 AbstractCegarLoop]: === Iteration 3 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:45:53,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:45:53,602 INFO L82 PathProgramCache]: Analyzing trace with hash 164243953, now seen corresponding path program 1 times [2018-12-01 16:45:53,602 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:45:53,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:45:53,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:45:53,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:45:53,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:45:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:45:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 16:45:53,627 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 16:45:53,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:45:53 BoogieIcfgContainer [2018-12-01 16:45:53,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 16:45:53,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 16:45:53,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 16:45:53,641 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 16:45:53,641 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:45:53" (3/4) ... [2018-12-01 16:45:53,643 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 16:45:53,665 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a5ac833f-1595-4064-91fd-014d0857a7c3/bin-2019/uautomizer/witness.graphml [2018-12-01 16:45:53,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 16:45:53,666 INFO L168 Benchmark]: Toolchain (without parser) took 673.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 962.4 MB in the beginning and 1.0 GB in the end (delta: -62.3 MB). Peak memory consumption was 36.2 MB. Max. memory is 11.5 GB. [2018-12-01 16:45:53,666 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:45:53,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 120.22 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 16:45:53,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.76 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:45:53,667 INFO L168 Benchmark]: Boogie Preprocessor took 15.00 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 16:45:53,667 INFO L168 Benchmark]: RCFGBuilder took 151.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -126.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-01 16:45:53,668 INFO L168 Benchmark]: TraceAbstraction took 348.69 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2018-12-01 16:45:53,668 INFO L168 Benchmark]: Witness Printer took 24.06 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-12-01 16:45:53,669 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 120.22 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.76 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.00 ms. Allocated memory is still 1.0 GB. Free memory is still 951.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 151.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -126.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 348.69 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * Witness Printer took 24.06 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L30] int i = __VERIFIER_nondet_int(); [L31] int x = __VERIFIER_nondet_int(); [L32] COND TRUE i >= 0 && x >= 0 VAL [i=1, x=2147483647] [L33] CALL f(i,x) VAL [\old(i)=1, \old(x)=2147483647] [L18] COND FALSE !(i==0) VAL [\old(i)=1, \old(x)=2147483647, i=1, x=2147483647] [L21] EXPR i-1 VAL [\old(i)=1, \old(x)=2147483647, i=1, x=2147483647] [L21] CALL g(i-1,x,i) VAL [\old(a)=0, \old(b)=2147483647, \old(c)=1] [L26] b+c VAL [\old(a)=0, \old(b)=2147483647, \old(c)=1, a=0, b=2147483647, c=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 24 SDslu, 119 SDs, 0 SdLazy, 44 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...